diff --git a/db/migrate/20120101000001_create_base.rb b/db/migrate/20120101000001_create_base.rb
index 586527349..481cd6c01 100644
--- a/db/migrate/20120101000001_create_base.rb
+++ b/db/migrate/20120101000001_create_base.rb
@@ -34,13 +34,13 @@ class CreateBase < ActiveRecord::Migration
       t.boolean :verified,                        null: false, default: false
       t.boolean :active,                          null: false, default: true
       t.string :note,                 limit: 250, null: true, default: ''
-      t.timestamp :last_login,                    null: true
+      t.timestamp :last_login,        limit: 3,   null: true
       t.string :source,               limit: 200, null: true
       t.integer :login_failed,                    null: false, default: 0
       t.string :preferences,          limit: 8000, null: true
       t.integer :updated_by_id,                   null: false
       t.integer :created_by_id,                   null: false
-      t.timestamps                                null: false
+      t.timestamps limit: 3, null: false
     end
     add_index :users, [:login], unique: true
     add_index :users, [:email]
@@ -61,7 +61,7 @@ class CreateBase < ActiveRecord::Migration
       t.string :note,                 limit: 250,  null: true
       t.integer :updated_by_id,                    null: false
       t.integer :created_by_id,                    null: false
-      t.timestamps                                 null: false
+      t.timestamps limit: 3, null: false
     end
     add_index :signatures, [:name], unique: true
 
@@ -74,7 +74,7 @@ class CreateBase < ActiveRecord::Migration
       t.string  :preferences,          limit: 2000, null: true
       t.integer :updated_by_id,                     null: false
       t.integer :created_by_id,                     null: false
-      t.timestamps                                  null: false
+      t.timestamps limit: 3, null: false
     end
     add_index :email_addresses, [:email], unique: true
 
@@ -89,7 +89,7 @@ class CreateBase < ActiveRecord::Migration
       t.string :note,                   limit: 250, null: true
       t.integer :updated_by_id,                     null: false
       t.integer :created_by_id,                     null: false
-      t.timestamps                                  null: false
+      t.timestamps limit: 3, null: false
     end
     add_index :groups, [:name], unique: true
 
@@ -101,15 +101,15 @@ class CreateBase < ActiveRecord::Migration
       t.string :note,                   limit: 250, null: true
       t.integer :updated_by_id,                     null: false
       t.integer :created_by_id,                     null: false
-      t.timestamps                                  null: false
+      t.timestamps limit: 3, null: false
     end
     add_index :roles, [:name], unique: true
 
     create_table :permissions do |t|
-      t.string :name, limit: 255, null: false
-      t.string :note, limit: 500, null: true
-      t.string :preferences, limit: 10_000, null: true
-      t.timestamps
+      t.string :name,                   limit: 255, null: false
+      t.string :note,                   limit: 500, null: true
+      t.string :preferences,            limit: 10_000, null: true
+      t.timestamps limit: 3, null: false
     end
     add_index :permissions, [:name], unique: true
 
@@ -125,7 +125,7 @@ class CreateBase < ActiveRecord::Migration
       t.string :note,                   limit: 250, null: true,  default: ''
       t.integer :updated_by_id,                     null: false
       t.integer :created_by_id,                     null: false
-      t.timestamps                                  null: false
+      t.timestamps limit: 3,   null: false
     end
     add_index :organizations, [:name], unique: true
 
@@ -157,7 +157,7 @@ class CreateBase < ActiveRecord::Migration
       t.string :secret,               limit: 250, null: true
       t.string :username,             limit: 250, null: true
       t.references :user, null: false
-      t.timestamps                                null: false
+      t.timestamps limit: 3, null: false
     end
     add_index :authorizations, [:uid, :provider]
     add_index :authorizations, [:user_id]
@@ -168,7 +168,7 @@ class CreateBase < ActiveRecord::Migration
       t.string  :alias,               limit: 20,  null: true
       t.string  :name,                limit: 255, null: false
       t.boolean :active,                          null: false, default: true
-      t.timestamps                                null: false
+      t.timestamps limit: 3, null: false
     end
     add_index :locales, [:locale], unique: true
     add_index :locales, [:name], unique: true
@@ -181,20 +181,20 @@ class CreateBase < ActiveRecord::Migration
       t.string :format,               limit: 20,   null: false, default: 'string'
       t.integer :updated_by_id,                    null: false
       t.integer :created_by_id,                    null: false
-      t.timestamps                                 null: false
+      t.timestamps limit: 3, null: false
     end
     add_index :translations, [:source], length: 255
     add_index :translations, [:locale]
 
     create_table :object_lookups do |t|
       t.string :name,                 limit: 250, null: false
-      t.timestamps                                null: false
+      t.timestamps limit: 3, null: false
     end
     add_index :object_lookups, [:name], unique: true
 
     create_table :type_lookups do |t|
       t.string :name,                 limit: 250, null: false
-      t.timestamps                                null: false
+      t.timestamps limit: 3, null: false
     end
     add_index :type_lookups, [:name],   unique: true
 
@@ -205,9 +205,9 @@ class CreateBase < ActiveRecord::Migration
       t.string  :action,              limit: 40,  null: false
       t.string  :label,               limit: 255, null: true
       t.text    :preferences,         limit: 500.kilobytes + 1, null: true
-      t.timestamp :last_used_at,                  null: true
+      t.timestamp :last_used_at,      limit: 3,   null: true
       t.date :expires_at,                         null: true
-      t.timestamps                                null: false
+      t.timestamps limit: 3, null: false
     end
     add_index :tokens, :user_id
     add_index :tokens, [:name, :action], unique: true
@@ -221,12 +221,12 @@ class CreateBase < ActiveRecord::Migration
       t.string :state,                limit: 50,  null: false
       t.integer :updated_by_id,                   null: false
       t.integer :created_by_id,                   null: false
-      t.timestamps                                null: false
+      t.timestamps limit: 3, null: false
     end
     create_table :package_migrations do |t|
       t.string :name,                 limit: 250, null: false
       t.string :version,              limit: 250, null: false
-      t.timestamps                                null: false
+      t.timestamps limit: 3, null: false
     end
 
     create_table :taskbars do |t|
@@ -235,12 +235,12 @@ class CreateBase < ActiveRecord::Migration
       t.string :client_id,                          null: false
       t.string :key,                   limit: 100,  null: false
       t.string :callback,              limit: 100,  null: false
-      t.column :state,                 :text, limit: 2.megabytes + 1, null: true
+      t.text :state,                   limit: 2.megabytes + 1, null: true
       t.string :params,                limit: 2000, null: true
       t.integer :prio,                              null: false
       t.boolean :notify,                            null: false, default: false
       t.boolean :active,                            null: false, default: false
-      t.timestamps                                  null: false
+      t.timestamps limit: 3, null: false
     end
     add_index :taskbars, [:user_id]
     add_index :taskbars, [:client_id]
@@ -250,21 +250,21 @@ class CreateBase < ActiveRecord::Migration
       t.references :tag_object,                     null: false
       t.integer :o_id,                              null: false
       t.integer :created_by_id,                     null: false
-      t.timestamps                                  null: false
+      t.timestamps limit: 3, null: false
     end
     add_index :tags, [:o_id]
     add_index :tags, [:tag_object_id]
 
     create_table :tag_objects do |t|
       t.string :name,                   limit: 250, null: false
-      t.timestamps                                  null: false
+      t.timestamps limit: 3, null: false
     end
     add_index :tag_objects, [:name], unique: true
 
     create_table :tag_items do |t|
       t.string :name,                   limit: 250, null: false
       t.string :name_downcase,          limit: 250, null: false
-      t.timestamps                                  null: false
+      t.timestamps limit: 3, null: false
     end
     add_index :tag_items, [:name_downcase]
 
@@ -272,7 +272,7 @@ class CreateBase < ActiveRecord::Migration
       t.references :recent_view_object,             null: false
       t.integer :o_id,                              null: false
       t.integer :created_by_id,                     null: false
-      t.timestamps                                  null: false
+      t.timestamps limit: 3, null: false
     end
     add_index :recent_views, [:o_id]
     add_index :recent_views, [:created_by_id]
@@ -286,7 +286,7 @@ class CreateBase < ActiveRecord::Migration
       t.references :group,                          null: true
       t.integer :o_id,                              null: false
       t.integer :created_by_id,                     null: false
-      t.timestamps                                  null: false
+      t.timestamps limit: 3, null: false
     end
     add_index :activity_streams, [:o_id]
     add_index :activity_streams, [:created_by_id]
@@ -308,7 +308,7 @@ class CreateBase < ActiveRecord::Migration
       t.string :value_from,            limit: 500,  null: true
       t.string :value_to,              limit: 500,  null: true
       t.integer :created_by_id,                     null: false
-      t.timestamps                                  null: false
+      t.timestamps limit: 3, null: false
     end
     add_index :histories, [:o_id]
     add_index :histories, [:created_by_id]
@@ -323,20 +323,20 @@ class CreateBase < ActiveRecord::Migration
 
     create_table :history_types do |t|
       t.string :name,                   limit: 250, null: false
-      t.timestamps                                  null: false
+      t.timestamps limit: 3, null: false
     end
     add_index :history_types, [:name], unique: true
 
     create_table :history_objects do |t|
       t.string :name,                   limit: 250, null: false
       t.string :note,                   limit: 250, null: true
-      t.timestamps                                  null: false
+      t.timestamps limit: 3, null: false
     end
     add_index :history_objects, [:name], unique: true
 
     create_table :history_attributes do |t|
       t.string :name,                   limit: 250, null: false
-      t.timestamps                                  null: false
+      t.timestamps limit: 3, null: false
     end
     add_index :history_attributes, [:name], unique: true
 
@@ -350,7 +350,7 @@ class CreateBase < ActiveRecord::Migration
       t.string :state_initial,          limit: 2000, null: true
       t.boolean :frontend,                           null: false
       t.text :preferences,              limit: 200.kilobytes + 1, null: true
-      t.timestamps null: false
+      t.timestamps limit: 3, null: false
     end
     add_index :settings, [:name], unique: true
     add_index :settings, [:area]
@@ -364,21 +364,21 @@ class CreateBase < ActiveRecord::Migration
       t.string :size,               limit: 50,  null: true
       t.string :filename,           limit: 250, null: false
       t.integer :created_by_id,                 null: false
-      t.timestamps                              null: false
+      t.timestamps limit: 3, null: false
     end
     add_index :stores, [:store_object_id, :o_id]
 
     create_table :store_objects do |t|
       t.string :name,               limit: 250, null: false
       t.string :note,               limit: 250, null: true
-      t.timestamps                              null: false
+      t.timestamps limit: 3, null: false
     end
     add_index :store_objects, [:name], unique: true
 
     create_table :store_files do |t|
       t.string :sha,                limit: 128, null: false
       t.string :provider,           limit: 20,  null: true
-      t.timestamps                              null: false
+      t.timestamps limit: 3, null: false
     end
     add_index :store_files, [:sha], unique: true
     add_index :store_files, [:provider]
@@ -386,7 +386,7 @@ class CreateBase < ActiveRecord::Migration
     create_table :store_provider_dbs do |t|
       t.string :sha,                limit: 128,            null: false
       t.binary :data,               limit: 200.megabytes,  null: true
-      t.timestamps                                         null: false
+      t.timestamps limit: 3, null: false
     end
     add_index :store_provider_dbs, [:sha], unique: true
 
@@ -403,7 +403,7 @@ class CreateBase < ActiveRecord::Migration
       t.string :source_url,         limit: 512, null: true
       t.integer :updated_by_id,                 null: false
       t.integer :created_by_id,                 null: false
-      t.timestamps                              null: false
+      t.timestamps limit: 3, null: false
     end
     add_index :avatars, [:o_id, :object_lookup_id]
     add_index :avatars, [:store_hash]
@@ -418,7 +418,7 @@ class CreateBase < ActiveRecord::Migration
       t.boolean :seen,                          null: false, default: false
       t.integer :updated_by_id,                 null: false
       t.integer :created_by_id,                 null: false
-      t.timestamps                              null: false
+      t.timestamps limit: 3, null: false
     end
     add_index :online_notifications, [:user_id]
     add_index :online_notifications, [:seen]
@@ -426,33 +426,33 @@ class CreateBase < ActiveRecord::Migration
     add_index :online_notifications, [:updated_at]
 
     create_table :schedulers do |t|
-      t.column :name,           :string, limit: 250,   null: false
-      t.column :method,         :string, limit: 250,   null: false
-      t.column :period,         :integer,              null: true
-      t.column :running,        :integer,              null: false, default: false
-      t.column :last_run,       :timestamp,            null: true
-      t.column :prio,           :integer,              null: false
-      t.column :pid,            :string, limit: 250,   null: true
-      t.column :note,           :string, limit: 250,   null: true
-      t.column :active,         :boolean,              null: false, default: false
-      t.column :updated_by_id,  :integer,              null: false
-      t.column :created_by_id,  :integer,              null: false
-      t.timestamps                                     null: false
+      t.string :name,                     limit: 250,   null: false
+      t.string :method,                   limit: 250,   null: false
+      t.integer :period,                                null: true
+      t.integer :running,                               null: false, default: false
+      t.timestamp :last_run,              limit: 3,     null: true
+      t.integer :prio,                                  null: false
+      t.string :pid,                      limit: 250,   null: true
+      t.string :note,                     limit: 250,   null: true
+      t.boolean :active,                                null: false, default: false
+      t.integer :updated_by_id,                         null: false
+      t.integer :created_by_id,                         null: false
+      t.timestamps limit: 3, null: false
     end
     add_index :schedulers, [:name], unique: true
 
     create_table :calendars do |t|
-      t.string  :name,                   limit: 250, null: true
-      t.string  :timezone,               limit: 250, null: true
+      t.string  :name,                   limit: 250,  null: true
+      t.string  :timezone,               limit: 250,  null: true
       t.string  :business_hours,         limit: 3000, null: true
-      t.boolean :default,                            null: false, default: false
-      t.string  :ical_url,               limit: 500, null: true
+      t.boolean :default,                             null: false, default: false
+      t.string  :ical_url,               limit: 500,  null: true
       t.text    :public_holidays,        limit: 500.kilobytes + 1, null: true
       t.text    :last_log,               limit: 500.kilobytes + 1, null: true
-      t.timestamp :last_sync,            null: true
-      t.integer :updated_by_id,          null: false
-      t.integer :created_by_id,          null: false
-      t.timestamps                       null: false
+      t.timestamp :last_sync,            limit: 3,    null: true
+      t.integer :updated_by_id,                       null: false
+      t.integer :created_by_id,                       null: false
+      t.timestamps limit: 3, null: false
     end
     add_index :calendars, [:name], unique: true
 
@@ -467,7 +467,7 @@ class CreateBase < ActiveRecord::Migration
       t.string  :fingerprint,          limit: 160, null: true
       t.string  :user_agent,           limit: 250, null: true
       t.string  :ip,                   limit: 160, null: true
-      t.timestamps                                 null: false
+      t.timestamps limit: 3, null: false
     end
     add_index :user_devices, [:user_id]
     add_index :user_devices, [:os, :browser, :location]
@@ -478,27 +478,27 @@ class CreateBase < ActiveRecord::Migration
     create_table :external_credentials do |t|
       t.string :name
       t.string :credentials, limit: 2500, null: false
-      t.timestamps                        null: false
+      t.timestamps limit: 3, null: false
     end
 
     create_table :object_manager_attributes do |t|
-      t.references :object_lookup,                         null: false
-      t.column :name,               :string, limit: 200,   null: false
-      t.column :display,            :string, limit: 200,   null: false
-      t.column :data_type,          :string, limit: 100,   null: false
-      t.column :data_option,        :string, limit: 8000,  null: true
-      t.column :data_option_new,    :string, limit: 8000,  null: true
-      t.column :editable,           :boolean,              null: false, default: true
-      t.column :active,             :boolean,              null: false, default: true
-      t.column :screens,            :string, limit: 2000,  null: true
-      t.column :to_create,          :boolean,              null: false, default: false
-      t.column :to_migrate,         :boolean,              null: false, default: false
-      t.column :to_delete,          :boolean,              null: false, default: false
-      t.column :to_config,          :boolean,              null: false, default: false
-      t.column :position,           :integer,              null: false
-      t.column :created_by_id,      :integer,              null: false
-      t.column :updated_by_id,      :integer,              null: false
-      t.timestamps                                         null: false
+      t.references :object_lookup,                          null: false
+      t.string :name,                         limit: 200,   null: false
+      t.string :display,                      limit: 200,   null: false
+      t.string :data_type,                    limit: 100,   null: false
+      t.string :data_option,                  limit: 8000,  null: true
+      t.string :data_option_new,              limit: 8000,  null: true
+      t.boolean :editable,                                  null: false, default: true
+      t.boolean :active,                                    null: false, default: true
+      t.string :screens,                      limit: 2000,  null: true
+      t.boolean :to_create,                                 null: false, default: false
+      t.boolean :to_migrate,                                null: false, default: false
+      t.boolean :to_delete,                                 null: false, default: false
+      t.boolean :to_config,                                 null: false, default: false
+      t.integer :position,                                  null: false
+      t.integer :created_by_id,                             null: false
+      t.integer :updated_by_id,                             null: false
+      t.timestamps limit: 3, null: false
     end
     add_index :object_manager_attributes, [:object_lookup_id, :name],   unique: true
     add_index :object_manager_attributes, [:object_lookup_id]
@@ -513,7 +513,7 @@ class CreateBase < ActiveRecord::Migration
       t.datetime :failed_at                    # Set when all retries have failed (actually, by default, the record is deleted instead)
       t.string   :locked_by                    # Who is working on this object (if locked)
       t.string   :queue                        # The name of the queue this job is in
-      t.timestamps null: false
+      t.timestamps limit: 3, null: false
     end
 
     add_index :delayed_jobs, [:priority, :run_at], name: 'delayed_jobs_priority'
diff --git a/db/migrate/20120101000010_create_ticket.rb b/db/migrate/20120101000010_create_ticket.rb
index 612dfab03..4a2acc4fa 100644
--- a/db/migrate/20120101000010_create_ticket.rb
+++ b/db/migrate/20120101000010_create_ticket.rb
@@ -5,7 +5,7 @@ class CreateTicket < ActiveRecord::Migration
       t.column :note,                 :string, limit: 250, null: true
       t.column :updated_by_id,        :integer,            null: false
       t.column :created_by_id,        :integer,            null: false
-      t.timestamps                                         null: false
+      t.timestamps limit: 3, null: false
     end
     add_index :ticket_state_types, [:name], unique: true
 
@@ -18,7 +18,7 @@ class CreateTicket < ActiveRecord::Migration
       t.column :active,               :boolean,             null: false, default: true
       t.column :updated_by_id,        :integer,             null: false
       t.column :created_by_id,        :integer,             null: false
-      t.timestamps                                          null: false
+      t.timestamps limit: 3, null: false
     end
     add_index :ticket_states, [:name], unique: true
 
@@ -28,7 +28,7 @@ class CreateTicket < ActiveRecord::Migration
       t.column :active,               :boolean,            null: false, default: true
       t.column :updated_by_id,        :integer,            null: false
       t.column :created_by_id,        :integer,            null: false
-      t.timestamps                                         null: false
+      t.timestamps limit: 3, null: false
     end
     add_index :ticket_priorities, [:name], unique: true
     create_table :tickets do |t|
@@ -36,38 +36,38 @@ class CreateTicket < ActiveRecord::Migration
       t.references :priority,                                             null: false
       t.references :state,                                                null: false
       t.references :organization,                                         null: true
-      t.column :number,                           :string,  limit: 60,    null: false
-      t.column :title,                            :string,  limit: 250,   null: false
+      t.column :number,                           :string,    limit: 60,  null: false
+      t.column :title,                            :string,    limit: 250, null: false
       t.column :owner_id,                         :integer,               null: false
       t.column :customer_id,                      :integer,               null: false
-      t.column :note,                             :string,  limit: 250,   null: true
-      t.column :first_response,                   :timestamp,             null: true
-      t.column :first_response_escal_date,        :timestamp,             null: true
-      t.column :first_response_sla_time,          :timestamp,             null: true
+      t.column :note,                             :string,    limit: 250, null: true
+      t.column :first_response,                   :timestamp, limit: 3,   null: true
+      t.column :first_response_escal_date,        :timestamp, limit: 3,   null: true
+      t.column :first_response_sla_time,          :timestamp, limit: 3,   null: true
       t.column :first_response_in_min,            :integer,               null: true
       t.column :first_response_diff_in_min,       :integer,               null: true
-      t.column :close_time,                       :timestamp,             null: true
-      t.column :close_time_escal_date,            :timestamp,             null: true
-      t.column :close_time_sla_time,              :timestamp,             null: true
+      t.column :close_time,                       :timestamp, limit: 3,   null: true
+      t.column :close_time_escal_date,            :timestamp, limit: 3,   null: true
+      t.column :close_time_sla_time,              :timestamp, limit: 3,   null: true
       t.column :close_time_in_min,                :integer,               null: true
       t.column :close_time_diff_in_min,           :integer,               null: true
-      t.column :update_time_escal_date,           :timestamp,             null: true
-      t.column :update_time_sla_time,             :timestamp,             null: true
+      t.column :update_time_escal_date,           :timestamp, limit: 3,   null: true
+      t.column :update_time_sla_time,             :timestamp, limit: 3,   null: true
       t.column :update_time_in_min,               :integer,               null: true
       t.column :update_time_diff_in_min,          :integer,               null: true
-      t.column :last_contact,                     :timestamp,             null: true
-      t.column :last_contact_agent,               :timestamp,             null: true
-      t.column :last_contact_customer,            :timestamp,             null: true
+      t.column :last_contact,                     :timestamp, limit: 3,   null: true
+      t.column :last_contact_agent,               :timestamp, limit: 3,   null: true
+      t.column :last_contact_customer,            :timestamp, limit: 3,   null: true
       t.column :create_article_type_id,           :integer,               null: true
       t.column :create_article_sender_id,         :integer,               null: true
       t.column :article_count,                    :integer,               null: true
-      t.column :escalation_time,                  :timestamp,             null: true
-      t.column :pending_time,                     :timestamp,             null: true
-      t.column :type,                             :string, limit: 100,    null: true
-      t.column :preferences,                      :text,   limit: 500.kilobytes + 1, null: true
+      t.column :escalation_time,                  :timestamp, limit: 3,   null: true
+      t.column :pending_time,                     :timestamp, limit: 3,   null: true
+      t.column :type,                             :string,    limit: 100, null: true
+      t.column :preferences,                      :text,      limit: 500.kilobytes + 1, null: true
       t.column :updated_by_id,                    :integer,               null: false
       t.column :created_by_id,                    :integer,               null: false
-      t.timestamps                                                        null: false
+      t.timestamps limit: 3, null: false
     end
     add_index :tickets, [:state_id]
     add_index :tickets, [:priority_id]
@@ -102,7 +102,7 @@ class CreateTicket < ActiveRecord::Migration
       t.column :key,            :string, limit: 50,  null: false
       t.column :value,          :string, limit: 50,  null: true
       t.column :created_by_id,  :integer,            null: false
-      t.timestamps                                   null: false
+      t.timestamps limit: 3, null: false
     end
     add_index :ticket_flags, [:tickets_id, :created_by_id]
     add_index :ticket_flags, [:tickets_id, :key]
@@ -114,7 +114,7 @@ class CreateTicket < ActiveRecord::Migration
       t.references :ticket_articles,                              null: true
       t.column :time_unit,      :decimal, precision: 6, scale: 2, null: false
       t.column :created_by_id,  :integer,                         null: false
-      t.timestamps                                                null: false
+      t.timestamps limit: 3, null: false
     end
     add_index :ticket_time_accounting, [:tickets_id]
     add_index :ticket_time_accounting, [:ticket_articles_id]
@@ -127,7 +127,7 @@ class CreateTicket < ActiveRecord::Migration
       t.column :active,               :boolean,            null: false, default: true
       t.column :updated_by_id,        :integer,            null: false
       t.column :created_by_id,        :integer,            null: false
-      t.timestamps                                         null: false
+      t.timestamps limit: 3, null: false
     end
     add_index :ticket_article_types, [:name], unique: true
 
@@ -136,7 +136,7 @@ class CreateTicket < ActiveRecord::Migration
       t.column :note,                 :string, limit: 250, null: true
       t.column :updated_by_id,        :integer,            null: false
       t.column :created_by_id,        :integer,            null: false
-      t.timestamps                                         null: false
+      t.timestamps limit: 3, null: false
     end
     add_index :ticket_article_senders, [:name], unique: true
 
@@ -159,7 +159,7 @@ class CreateTicket < ActiveRecord::Migration
       t.column :preferences,          :text,   limit: 500.kilobytes + 1, null: true
       t.column :updated_by_id,        :integer,                null: false
       t.column :created_by_id,        :integer,                null: false
-      t.timestamps                                             null: false
+      t.timestamps limit: 3, null: false
     end
     add_index :ticket_articles, [:ticket_id]
     add_index :ticket_articles, [:message_id_md5]
@@ -175,7 +175,7 @@ class CreateTicket < ActiveRecord::Migration
       t.column :key,                 :string, limit: 50, null: false
       t.column :value,               :string, limit: 50, null: true
       t.column :created_by_id,       :integer,           null: false
-      t.timestamps                                       null: false
+      t.timestamps limit: 3,  null: false
     end
     add_index :ticket_article_flags, [:ticket_articles_id, :created_by_id], name: 'index_ticket_article_flags_on_articles_id_and_created_by_id'
     add_index :ticket_article_flags, [:ticket_articles_id, :key]
@@ -201,7 +201,7 @@ class CreateTicket < ActiveRecord::Migration
       t.column :active,               :boolean,              null: false, default: true
       t.column :updated_by_id,        :integer,              null: false
       t.column :created_by_id,        :integer,              null: false
-      t.timestamps                                           null: false
+      t.timestamps limit: 3, null: false
     end
     add_index :overviews, [:name]
 
@@ -228,7 +228,7 @@ class CreateTicket < ActiveRecord::Migration
       t.column :active,               :boolean,             null: false, default: true
       t.column :updated_by_id,        :integer,             null: false
       t.column :created_by_id,        :integer,             null: false
-      t.timestamps                                          null: false
+      t.timestamps limit: 3, null: false
     end
     add_index :triggers, [:name], unique: true
 
@@ -238,17 +238,17 @@ class CreateTicket < ActiveRecord::Migration
       t.column :condition,            :string,  limit: 2500, null: false
       t.column :perform,              :string,  limit: 2500, null: false
       t.column :disable_notification, :boolean,              null: false, default: true
-      t.column :last_run_at,          :timestamp,            null: true
-      t.column :next_run_at,          :timestamp,            null: true
+      t.column :last_run_at,          :timestamp, limit: 3,  null: true
+      t.column :next_run_at,          :timestamp, limit: 3,  null: true
       t.column :running,              :boolean,              null: false, default: false
       t.column :processed,            :integer,              null: false, default: 0
       t.column :matching,             :integer,              null: false
-      t.column :pid,                  :string, limit: 250,   null: true
-      t.column :note,                 :string, limit: 250,   null: true
+      t.column :pid,                  :string,  limit: 250,  null: true
+      t.column :note,                 :string,  limit: 250,  null: true
       t.column :active,               :boolean,              null: false, default: false
       t.column :updated_by_id,        :integer,              null: false
       t.column :created_by_id,        :integer,              null: false
-      t.timestamps null: false
+      t.timestamps limit: 3, null: false
     end
     add_index :jobs, [:name], unique: true
 
@@ -258,14 +258,14 @@ class CreateTicket < ActiveRecord::Migration
       t.column :content_type, :string, limit: 250,   null: false
       t.column :active,       :boolean,              null: false, default: true
       t.column :note,         :string, limit: 250,   null: true
-      t.timestamps                                   null: false
+      t.timestamps limit: 3, null: false
     end
 
     create_table :link_types do |t|
       t.column :name,         :string, limit: 250,   null: false
       t.column :note,         :string, limit: 250,   null: true
       t.column :active,       :boolean,              null: false, default: true
-      t.timestamps                                   null: false
+      t.timestamps limit: 3, null: false
     end
     add_index :link_types, [:name],     unique: true
 
@@ -273,7 +273,7 @@ class CreateTicket < ActiveRecord::Migration
       t.column :name,         :string, limit: 250,   null: false
       t.column :note,         :string, limit: 250,   null: true
       t.column :active,       :boolean,              null: false, default: true
-      t.timestamps                                   null: false
+      t.timestamps limit: 3, null: false
     end
     add_index :link_objects, [:name],   unique: true
 
@@ -283,7 +283,7 @@ class CreateTicket < ActiveRecord::Migration
       t.column :link_object_source_value,     :integer,   null: false
       t.column :link_object_target_id,        :integer,   null: false
       t.column :link_object_target_value,     :integer,   null: false
-      t.timestamps                                        null: false
+      t.timestamps limit: 3, null: false
     end
     add_index :links, [:link_object_source_id, :link_object_source_value, :link_object_target_id, :link_object_target_value, :link_type_id], unique: true, name: 'links_uniq_total'
 
@@ -296,7 +296,7 @@ class CreateTicket < ActiveRecord::Migration
       t.column :note,           :string, limit: 250,  null: true
       t.column :updated_by_id,  :integer,             null: false
       t.column :created_by_id,  :integer,             null: false
-      t.timestamps                                    null: false
+      t.timestamps limit: 3, null: false
     end
     add_index :postmaster_filters, [:channel]
 
@@ -307,10 +307,10 @@ class CreateTicket < ActiveRecord::Migration
       t.column :content,              :text,    limit: 10.megabytes + 1, null: false
       t.column :note,                 :string,  limit: 250,  null: true
       t.column :active,               :boolean,              null: false, default: true
-      t.column :foreign_id,           :integer,               null: true
+      t.column :foreign_id,           :integer,              null: true
       t.column :updated_by_id,        :integer,              null: false
       t.column :created_by_id,        :integer,              null: false
-      t.timestamps                                           null: false
+      t.timestamps limit: 3, null: false
     end
     add_index :text_modules, [:user_id]
     add_index :text_modules, [:name]
@@ -328,7 +328,7 @@ class CreateTicket < ActiveRecord::Migration
       t.column :options,              :string,  limit: 2500, null: false
       t.column :updated_by_id,        :integer,              null: false
       t.column :created_by_id,        :integer,              null: false
-      t.timestamps                                           null: false
+      t.timestamps limit: 3, null: false
     end
     add_index :templates, [:user_id]
     add_index :templates, [:name]
@@ -345,14 +345,14 @@ class CreateTicket < ActiveRecord::Migration
       t.column :area,           :string, limit: 100,   null: false
       t.column :options,        :text,   limit: 500.kilobytes + 1,  null: true
       t.column :active,         :boolean,              null: false, default: true
-      t.column :preferences,    :string, limit: 2000, null: true
+      t.column :preferences,    :string, limit: 2000,  null: true
       t.column :last_log_in,    :text,   limit: 500.kilobytes + 1, null: true
       t.column :last_log_out,   :text,   limit: 500.kilobytes + 1, null: true
-      t.column :status_in,      :string, limit: 100,  null: true
-      t.column :status_out,     :string, limit: 100,  null: true
+      t.column :status_in,      :string, limit: 100,   null: true
+      t.column :status_out,     :string, limit: 100,   null: true
       t.column :updated_by_id,  :integer,              null: false
       t.column :created_by_id,  :integer,              null: false
-      t.timestamps                                     null: false
+      t.timestamps limit: 3, null: false
     end
     add_index :channels, [:area]
 
@@ -365,7 +365,7 @@ class CreateTicket < ActiveRecord::Migration
       t.column :condition,            :string, limit: 5000,     null: true
       t.column :updated_by_id,        :integer,                 null: false
       t.column :created_by_id,        :integer,                 null: false
-      t.timestamps                                              null: false
+      t.timestamps limit: 3, null: false
     end
     add_index :slas, [:name], unique: true
 
@@ -376,7 +376,7 @@ class CreateTicket < ActiveRecord::Migration
       t.string  :note,                   limit: 250,  null: true
       t.integer :updated_by_id,                       null: false
       t.integer :created_by_id,                       null: false
-      t.timestamps                                    null: false
+      t.timestamps limit: 3, null: false
     end
     add_index :macros, [:name], unique: true
 
@@ -389,7 +389,7 @@ class CreateTicket < ActiveRecord::Migration
       t.string  :preferences,            limit: 5000, null: true
       t.integer :updated_by_id,                       null: false
       t.integer :created_by_id,                       null: false
-      t.timestamps                                    null: false
+      t.timestamps limit: 3, null: false
     end
     add_index :chats, [:name], unique: true
 
@@ -399,7 +399,7 @@ class CreateTicket < ActiveRecord::Migration
       t.string  :note,                   limit: 250,  null: true
       t.integer :updated_by_id,                       null: false
       t.integer :created_by_id,                       null: false
-      t.timestamps                                    null: false
+      t.timestamps limit: 3, null: false
     end
     add_index :chat_topics, [:name], unique: true
 
@@ -412,7 +412,7 @@ class CreateTicket < ActiveRecord::Migration
       t.text    :preferences,            limit: 100.kilobytes + 1, null: true
       t.integer :updated_by_id,                       null: true
       t.integer :created_by_id,                       null: true
-      t.timestamps                                    null: false
+      t.timestamps limit: 3, null: false
     end
     add_index :chat_sessions, [:session_id]
     add_index :chat_sessions, [:state]
@@ -423,7 +423,7 @@ class CreateTicket < ActiveRecord::Migration
       t.integer :chat_session_id,                     null: false
       t.string  :content,                limit: 5000, null: false
       t.integer :created_by_id,                       null: true
-      t.timestamps                                    null: false
+      t.timestamps limit: 3, null: false
     end
     add_index :chat_messages, [:chat_session_id]
 
@@ -432,7 +432,7 @@ class CreateTicket < ActiveRecord::Migration
       t.integer :concurrent,                          null: false, default: 5
       t.integer :updated_by_id,                       null: false
       t.integer :created_by_id,                       null: false
-      t.timestamps                                    null: false
+      t.timestamps limit: 3, null: false
     end
     add_index :chat_agents, [:active]
     add_index :chat_agents, [:updated_by_id], unique: true
@@ -444,7 +444,7 @@ class CreateTicket < ActiveRecord::Migration
       t.column :active,         :boolean,              null: false, default: true
       t.column :updated_by_id,  :integer,              null: false
       t.column :created_by_id,  :integer,              null: false
-      t.timestamps                                     null: false
+      t.timestamps limit: 3, null: false
     end
     add_index :report_profiles, [:name], unique: true
 
diff --git a/db/migrate/20120101000020_create_network.rb b/db/migrate/20120101000020_create_network.rb
index 764c5a43f..39c253342 100644
--- a/db/migrate/20120101000020_create_network.rb
+++ b/db/migrate/20120101000020_create_network.rb
@@ -6,7 +6,7 @@ class CreateNetwork < ActiveRecord::Migration
       t.column :active,               :boolean,               null: false, default: true
       t.column :updated_by_id,        :integer,               null: false
       t.column :created_by_id,        :integer,               null: false
-      t.timestamps                                            null: false
+      t.timestamps limit: 3, null: false
     end
     add_index :networks, [:name], unique: true
 
@@ -16,7 +16,7 @@ class CreateNetwork < ActiveRecord::Migration
       t.column :active,               :boolean,               null: false, default: true
       t.column :updated_by_id,        :integer,               null: false
       t.column :created_by_id,        :integer,               null: false
-      t.timestamps                                            null: false
+      t.timestamps limit: 3, null: false
     end
     add_index :network_category_types, [:name], unique: true
 
@@ -25,7 +25,7 @@ class CreateNetwork < ActiveRecord::Migration
       t.column :key,                  :string, limit: 250, null: false
       t.column :updated_by_id,        :integer,               null: false
       t.column :created_by_id,        :integer,               null: false
-      t.timestamps                                            null: false
+      t.timestamps limit: 3, null: false
     end
     add_index :network_privacies, [:name], unique: true
 
@@ -39,7 +39,7 @@ class CreateNetwork < ActiveRecord::Migration
       t.column :active,               :boolean,               null: false, default: true
       t.column :updated_by_id,        :integer,               null: false
       t.column :created_by_id,        :integer,               null: false
-      t.timestamps                                            null: false
+      t.timestamps limit: 3, null: false
     end
     add_index :network_categories, [:network_id]
 
@@ -63,7 +63,7 @@ class CreateNetwork < ActiveRecord::Migration
       t.column :body,                 :string, limit: 20_000, null: false
       t.column :updated_by_id,        :integer,               null: false
       t.column :created_by_id,        :integer,               null: false
-      t.timestamps                                            null: false
+      t.timestamps limit: 3, null: false
     end
     add_index :network_item_comments, [:network_item_id]
 
@@ -71,7 +71,7 @@ class CreateNetwork < ActiveRecord::Migration
       t.references :network_item,                             null: false
       t.column :updated_by_id,        :integer,               null: false
       t.column :created_by_id,        :integer,               null: false
-      t.timestamps                                            null: false
+      t.timestamps limit: 3, null: false
     end
     add_index :network_item_plus, [:network_item_id, :created_by_id], unique: true
 
@@ -79,7 +79,7 @@ class CreateNetwork < ActiveRecord::Migration
       t.references :network_categories,                       null: false
       t.column :updated_by_id,        :integer,               null: false
       t.column :created_by_id,        :integer,               null: false
-      t.timestamps                                            null: false
+      t.timestamps limit: 3, null: false
     end
     add_index :network_category_subscriptions, [:network_categories_id, :created_by_id], unique: true, name: 'index_network_category_subscriptions_on_network_c_i_and_c'
 
@@ -87,7 +87,7 @@ class CreateNetwork < ActiveRecord::Migration
       t.references :network_item,                             null: false
       t.column :updated_by_id,        :integer,               null: false
       t.column :created_by_id,        :integer,               null: false
-      t.timestamps                                            null: false
+      t.timestamps limit: 3, null: false
     end
     add_index :network_item_subscriptions, [:network_item_id, :created_by_id], unique: true, name: 'index_network_item_subscriptions_on_item_id_and_created_by_id'
 
diff --git a/db/migrate/20150967000001_create_stats_store.rb b/db/migrate/20150967000001_create_stats_store.rb
index b330dcabb..da91cc369 100644
--- a/db/migrate/20150967000001_create_stats_store.rb
+++ b/db/migrate/20150967000001_create_stats_store.rb
@@ -8,7 +8,7 @@ class CreateStatsStore < ActiveRecord::Migration
       t.integer :related_stats_store_object_id,     null: true
       t.string  :data,                 limit: 2500, null: true
       t.integer :created_by_id,                     null: false
-      t.timestamps                                  null: false
+      t.timestamps limit: 3, null: false
     end
     add_index :stats_stores, [:o_id]
     add_index :stats_stores, [:key]
diff --git a/db/migrate/20160316000006_renew_triggers.rb b/db/migrate/20160316000006_renew_triggers.rb
index 5469f2d1e..760d3bdef 100644
--- a/db/migrate/20160316000006_renew_triggers.rb
+++ b/db/migrate/20160316000006_renew_triggers.rb
@@ -10,7 +10,7 @@ class RenewTriggers < ActiveRecord::Migration
       t.column :active,               :boolean,             null: false, default: true
       t.column :updated_by_id,        :integer,             null: false
       t.column :created_by_id,        :integer,             null: false
-      t.timestamps                                          null: false
+      t.timestamps limit: 3, null: false
     end
     add_index :triggers, [:name], unique: true
 
@@ -31,7 +31,7 @@ class RenewTriggers < ActiveRecord::Migration
       t.column :active,               :boolean,              null: false, default: false
       t.column :updated_by_id,        :integer,              null: false
       t.column :created_by_id,        :integer,              null: false
-      t.timestamps null: false
+      t.timestamps limit: 3, null: false
     end
     add_index :jobs, [:name], unique: true
 
diff --git a/db/migrate/20160417000002_add_http_log.rb b/db/migrate/20160417000002_add_http_log.rb
index 8480981ef..4fb47729f 100644
--- a/db/migrate/20160417000002_add_http_log.rb
+++ b/db/migrate/20160417000002_add_http_log.rb
@@ -12,7 +12,7 @@ class AddHttpLog < ActiveRecord::Migration
       t.column :response,             :string, limit: 10_000, null: false
       t.column :updated_by_id,        :integer,              null: true
       t.column :created_by_id,        :integer,              null: true
-      t.timestamps                                           null: false
+      t.timestamps limit: 3, null: false
     end
     add_index :http_logs, [:facility]
     add_index :http_logs, [:created_by_id]
diff --git a/db/migrate/20160422000003_create_cti_log.rb b/db/migrate/20160422000003_create_cti_log.rb
index 85b75aa77..9f0f5dd63 100644
--- a/db/migrate/20160422000003_create_cti_log.rb
+++ b/db/migrate/20160422000003_create_cti_log.rb
@@ -9,11 +9,11 @@ class CreateCtiLog < ActiveRecord::Migration
       t.string  :to_comment,             limit: 250,  null: true
       t.string  :call_id,                limit: 250,  null: false
       t.string  :comment,                limit: 500,  null: true
-      t.timestamp :start,                             null: true
-      t.timestamp :end,                               null: true
+      t.timestamp :start,                limit: 3,    null: true
+      t.timestamp :end,                  limit: 3,    null: true
       t.boolean   :done,                              null: false, default: true
       t.text :preferences,            limit: 500.kilobytes + 1, null: true
-      t.timestamps null: false
+      t.timestamps limit: 3, null: false
     end
     add_index :cti_logs, [:call_id], unique: true
     add_index :cti_logs, [:direction]
@@ -27,7 +27,7 @@ class CreateCtiLog < ActiveRecord::Migration
       t.integer :o_id,                               null: false
       t.integer :user_id,                            null: true
       t.text    :preferences,            limit: 500.kilobytes + 1, null: true
-      t.timestamps null: false
+      t.timestamps limit: 3, null: false
     end
     add_index :cti_caller_ids, [:caller_id]
     add_index :cti_caller_ids, [:caller_id, :level]
diff --git a/db/migrate/20160424000002_create_external_sync.rb b/db/migrate/20160424000002_create_external_sync.rb
index 03ae0ce85..566c72035 100644
--- a/db/migrate/20160424000002_create_external_sync.rb
+++ b/db/migrate/20160424000002_create_external_sync.rb
@@ -6,7 +6,7 @@ class CreateExternalSync < ActiveRecord::Migration
       t.string  :object,                 limit: 100,  null: false
       t.integer :o_id,                                null: false
       t.text    :last_payload,           limit: 500.kilobytes + 1, null: true
-      t.timestamps null: false
+      t.timestamps limit: 3, null: false
     end
     add_index :external_syncs, [:source, :source_id], unique: true
     add_index :external_syncs, [:source, :source_id, :object, :o_id], name: 'index_external_syncs_on_source_and_source_id_and_object_o_id'
diff --git a/db/migrate/20160704000001_add_karma.rb b/db/migrate/20160704000001_add_karma.rb
index bbc2df934..9a1e82bf8 100644
--- a/db/migrate/20160704000001_add_karma.rb
+++ b/db/migrate/20160704000001_add_karma.rb
@@ -5,16 +5,16 @@ class AddKarma < ActiveRecord::Migration
       t.integer :user_id,                           null: false
       t.integer :score,                             null: false
       t.string  :level,               limit: 200,   null: false
-      t.timestamps                                  null: false
+      t.timestamps limit: 3, null: false
     end
     add_index :karma_users, [:user_id], unique: true
 
     create_table :karma_activities do |t|
-      t.column :name,                :string, limit: 200,    null: false
-      t.column :description,         :string, limit: 200,    null: false
-      t.column :score,               :integer,               null: false
-      t.column :once_ttl,            :integer,               null: false
-      t.timestamps                                           null: false
+      t.string  :name,                limit: 200,    null: false
+      t.string  :description,         limit: 200,    null: false
+      t.integer :score,                              null: false
+      t.integer :once_ttl,                           null: false
+      t.timestamps limit: 3, null: false
     end
     add_index :karma_activities, [:name], unique: true
     Karma::Activity.create_or_update(
@@ -91,7 +91,7 @@ class AddKarma < ActiveRecord::Migration
       t.integer :activity_id,                   null: false
       t.integer :score,                         null: false
       t.integer :score_total,                   null: false
-      t.timestamps                              null: false
+      t.timestamps limit: 3, null: false
     end
     add_index :karma_activity_logs, [:user_id]
     add_index :karma_activity_logs, [:created_at]
diff --git a/db/migrate/20160805000001_add_permission.rb b/db/migrate/20160805000001_add_permission.rb
index 67f6a49a8..abbb211b2 100644
--- a/db/migrate/20160805000001_add_permission.rb
+++ b/db/migrate/20160805000001_add_permission.rb
@@ -8,7 +8,7 @@ class AddPermission < ActiveRecord::Migration
       t.string :name, limit: 255, null: false
       t.string :note, limit: 500, null: true
       t.string :preferences, limit: 10_000, null: true
-      t.timestamps
+      t.timestamps limit: 3, null: false
     end
     add_index :permissions, [:name], unique: true
 
diff --git a/db/migrate/20160830000001_token_attributes.rb b/db/migrate/20160830000001_token_attributes.rb
index b29d6d135..ea8f89eeb 100644
--- a/db/migrate/20160830000001_token_attributes.rb
+++ b/db/migrate/20160830000001_token_attributes.rb
@@ -3,7 +3,7 @@ class TokenAttributes < ActiveRecord::Migration
     # return if it's a new setup
     return if !Setting.find_by(name: 'system_init_done')
 
-    add_column :tokens, :last_used_at, :datetime, null: true
+    add_column :tokens, :last_used_at, :timestamp, limit: 3, null: true
     add_column :tokens, :expires_at, :date, null: true
   end
 end