Edición principal
Esta es una reescritura completa de esta respuesta (teniendo en cuenta las críticas válidas de que la versión anterior era propensa a errores y causaría problemas)
También publicó una demostración de cómo aplicar esto a: Youtube - Replicación de SQL Server: cómo agregar un artículo sin tomar una instantánea .
IMPORTANTE: este NO es un enfoque recomendado por Microsoft, por lo que estará solo con respecto a que funcione, ¡ NO aplique directamente a su entorno de producción sin pruebas aisladas significativas y se sienta cómodo con los pasos!
Pasos a seguir:
Planning steps:
* Choose Publication that article will be added to
* Gather information about the publication
exec sp_helppublication '[Name of Publication]'
https://msdn.microsoft.com/en-us/library/ms189782(v=sql.105).aspx
- replication frequency = 0 - this is Transactional replication (THIS IS A REQUIREMENT FOR THIS METHOD)
- replicate_ddl = 1 - means ALTER TABLES will apply SQL Server generated repl procs
- independent_agent = 1 - means that you will only affect tables in this publication when deploying
* Identify which subscribers are going to be affected
Pre-deployment steps (can be done at any time)
1. Create table on subscribers
2. Create custom replication procs on subscribers
(Customisation will ignore if the IUD has already been applied to subscriber - because you have manually sync'd the data)
Deployment/Potential impact:
3. Stop Distribution Agents to all subscribers for this publication
4. Add article to publication on publisher
5. Sync data from publisher to subscriber
6. Start Distribution Agents to all subscribers for this publication
7. Monitor/Verify all data has arrived
Optional follow on:
8. Apply standard repl procs (removing if not exists checks)
This is optional as the generated repl scripts should be fine for the most part
Note: When ALTER table scripts are applied on the Publisher (when replicate_ddl = 1) repl procs will automatically be recreated by the Distribution Agent (so any customisation will be lost)
Para verificar:
- realice la inserción en el editor: verifique que la fila llegue al suscriptor
- realice la actualización en el editor: verifique que el cambio llegue al suscriptor
- realizar eliminar en editor: verificar fila eliminada en suscriptor
- verifique que hayan llegado las últimas n filas y coincida entre el editor y el suscriptor
EJEMPLO Proceso
A) Cree una tabla en su editor:
/* Deliberately applying IDENTITY, DEFAULT & INDEX to demonstrate usage on subscriber */
CREATE TABLE [dbo].[TableNotUsingSnap](
[Id] [int] NOT NULL IDENTITY(1,1),
[Note_Text] [varchar](4096) NOT NULL,
[CreatedDate] [datetime] NULL,
[LoggedDate] [datetime] NOT NULL CONSTRAINT DF_TableNotUsingSnap_LoggedDate DEFAUlT GETUTCDATE(),
CONSTRAINT [PK_TableNotUsingSnap] PRIMARY KEY CLUSTERED
(
[Id] ASC
)WITH (PAD_INDEX = OFF, STATISTICS_NORECOMPUTE = OFF, IGNORE_DUP_KEY = OFF, ALLOW_ROW_LOCKS = ON, ALLOW_PAGE_LOCKS = ON) ON [PRIMARY]
) ON [PRIMARY]
GO
CREATE NONCLUSTERED INDEX [IDX_NC_TableNotUsingSnap_LoggedDate] ON [dbo].[TableNotUsingSnap]
(
[LoggedDate] ASC
) INCLUDE ([Note_Text])
GO
B) Cree usted mismo un trabajo / proc / script para hacer algunas inserciones / actualizaciones / eliminaciones en [TableNotUsingSnap] (luego puede usar esto para validar cómo el suscriptor se sincroniza correctamente usando este método.
Pre-pasos:
1. Crea tu tabla en el suscriptor
/* example script to add a table to a publication without running the snapshot agent
Steps:
Pre steps:
1. Create table on subscribers
2. Create replication procs on subscribers
Deployment/Potential impact:
3. Stop Distribution Agents to all subscribers for this publication
4. Add article to publication on publisher
5. DTS data from publisher to subscriber
6. Start Distribution Agents to all subscribers for this publication
7. Monitor/Verify all data has arrived
=========================================================
Notes:
* Drop unnecessary FK's, Indexes
* Do NOT have IDENTITY(1,1), DEFAULTS
* Do have a Clustered PK
* Create appropriate indexes for your subscribers use case */
-- RUN ON SUBSCRIBER
IF OBJECT_ID('dbo.TableNotUsingSnap') IS NOT NULL
exec sp_rename 'dbo.TableNotUsingSnap', 'TableNotUsingSnap_20170127'
GO
SET ANSI_NULLS ON
GO
SET QUOTED_IDENTIFIER ON
GO
CREATE TABLE [dbo].[TableNotUsingSnap](
[Id] [int] NOT NULL,
[Note_Text] [varchar](4096) NOT NULL,
[CreatedDate] [datetime] NULL,
[LoggedDate] [datetime] NOT NULL,
CONSTRAINT [PK_TableNotUsingSnap] PRIMARY KEY CLUSTERED
(
[Id] ASC
)WITH (PAD_INDEX = OFF, STATISTICS_NORECOMPUTE = OFF, IGNORE_DUP_KEY = OFF, ALLOW_ROW_LOCKS = ON, ALLOW_PAGE_LOCKS = ON) ON [PRIMARY]
) ON [PRIMARY]
GO
2. Cree sus procedimientos almacenados de replicación (actualizar / insertar / eliminar) - en el suscriptor
Puede crear los procedimientos de respuesta:
- Manualmente (¡tenga cuidado ya que es muy fácil cometer un error!)
- Agregue el artículo utilizando el método MS Snapshot en una máquina Dev y realice un script en los procedimientos de respuesta (listo para que agregue sus ajustes)
- Crear / encontrar algún tipo de generador
El cambio que deberá aplicar:
- sp_MSins_ [Schema] [TableName] - Agregar
IF NOT EXISTS (SELECT 'row already exists' FROM [Schema].[TableName] dest WITH (NOLOCK) WHERE dest.Id = @c1)para no insertar si ya está allí
- sp_MSupd_ [Esquema] [TableName] - Comenta el
IF @@rowcount = 0 ... exec sp_MSreplraiserror ... para ignorar una actualización que no se aplica (ya que el registro puede haberse eliminado en el editor antes de sincronizar los datos)
- sp_MSdel_ [Schema] [TableName] - Comenta
IF @@rowcount = 0 ... exec sp_MSreplraiserror ...para ignorar una eliminación que no se aplica (ya que el registro puede haberse eliminado en el editor antes de sincronizar los datos)
sp_MSins_dboTableNotUsingSnap:
/* Customised Replication insert proc utilized to support adding to replication without a snapshot. */
create procedure [dbo].[sp_MSins_dboTableNotUsingSnap]
@c1 int,
@c2 varchar(4096),
@c3 datetime
AS
BEGIN
IF NOT EXISTS (SELECT 'row already exists' FROM [dbo].[TableNotUsingSnap] dest WITH (NOLOCK) WHERE dest.Id = @c1)
BEGIN
insert into [dbo].[TableNotUsingSnap]
([Id],
[Note_Text],
[Repl_Upsert_UTC])
values
(@c1,
@c2,
@c3)
END
END
GO
sp_MSupd_dboTableNotUsingSnap:
/* Customised Replication insert proc utilized to support adding to replication without a snapshot. */
create procedure [dbo].[sp_MSupd_dboTableNotUsingSnap]
@c1 int = NULL,
@c2 varchar(4096) = NULL,
@c3 datetime = NULL,
@pkc1 int = NULL,
@bitmap binary(1)
AS
BEGIN
declare @primarykey_text nvarchar(100) = ''
if (substring(@bitmap,1,1) & 1 = 1)
begin
update [dbo].[TableNotUsingSnap]
set [Id] = case substring(@bitmap,1,1) & 1 when 1 then @c1 else [Id] end,
[Note_Text] = case substring(@bitmap,1,1) & 2 when 2 then @c2 else [Note_Text] end,
[Repl_Upsert_UTC] = case substring(@bitmap,1,1) & 4 when 4 then @c3 else [Repl_Upsert_UTC] END
WHERE [Id] = @pkc1
/* Commented out while adding to publication
if @@rowcount = 0
if @@microsoftversion>0x07320000
Begin
set @primarykey_text = @primarykey_text + '[id] = ' + convert(nvarchar(100),@pkc1,1)
exec sp_MSreplraiserror @errorid=20598, @param1=N'[dbo].[TableNotUsingSnap]', @param2=@primarykey_text, @param3=13233
End */
END
ELSE
BEGIN
update [dbo].[TableNotUsingSnap]
set [Note_Text] = case substring(@bitmap,1,1) & 2 when 2 then @c2 else [Note_Text] end,
[Repl_Upsert_UTC] = case substring(@bitmap,1,1) & 4 when 4 then @c3 else [Repl_Upsert_UTC] END
WHERE [Id] = @pkc1
/* Commented out while adding to publication
if @@rowcount = 0
if @@microsoftversion>0x07320000
Begin
set @primarykey_text = @primarykey_text + '[id] = ' + convert(nvarchar(100),@pkc1,1)
exec sp_MSreplraiserror @errorid=20598, @param1=N'[dbo].[TableNotUsingSnap]', @param2=@primarykey_text, @param3=13233
End */
end
END
GO
sp_MSdel_dboTableNotUsingSnap:
/* Customised Replication insert proc utilized to support adding to replication without a snapshot. */
create procedure [dbo].[sp_MSdel_dboTableNotUsingSnap]
@pkc1 int
as
begin
declare @primarykey_text nvarchar(100) = ''
delete [dbo].[TableNotUsingSnap]
where [Id] = @pkc1
/* ignore if the record doesn't exist when deleting it
if @@rowcount = 0
if @@microsoftversion>0x07320000
Begin
set @primarykey_text = @primarykey_text + '[Id] = ' + convert(nvarchar(100),@pkc1,1)
exec sp_MSreplraiserror @errorid=20598, @param1=N'[dbo].[TableNotUsingSnap]', @param2=@primarykey_text, @param3=13234
End */
end
GO
PASOS DE DESPLIEGUE
3. Detenga el agente de distribución: en el Distribuidor (Push) o Suscriptor (Pull)
/* example script to add a table to a publication without running the snapshot agent
Steps:
Pre steps:
1. Create table on subscribers
2. Create replication procs on subscribers
Deployment/Potential impact:
** 3. Stop Distribution Agents to all subscribers for this publication
4. Add article to publication on publisher
5. DTS data from publisher to subscriber
6. Start Distribution Agents to all subscribers for this publication
7. Monitor/Verify all data has arrived
=========================================================
Note: check your publication settings:
if @independent_agent = N'false'
you will need to stop the distribution agent which will affect ALL
publications going to that subscriber
if @independent_agent = N'true'
you will need to stop the publication specific distribution agent
(to each subscriber)
Plan your live release around that knowledge!
*/
-- IF PUSH REPLICATION: RUN ON DISTRIBUTION SERVER
-- IF PULL REPLICATION: RUN ON SUBSCRIBER SERVER
/* disable the Job first */
exec msdb..sp_update_job @job_name = '[Distribution agent job]', @enabled = 0
GO
/* wait for 10 seconds - precaution ONLY */
WAITFOR DELAY '00:00:10.000'
GO
/* now stop the job */
exec msdb..sp_stop_job @job_name = '[Distribution agent job]'
GO
/*
NOTE: You might recieve an error about stopping a job that is already stopped. You can ignore that error.
It is up to you to verify that the job has been stopped correctly!
*/
4. Ahora agregue el artículo a la publicación - En el editor
Parámetros clave:
sp_addarticle- se @pre_creation_cmd = N'none'usa para decirle al agente de distribución que no deje caer y genere sus propios objetossp_addsubscription- @sync_type = N'none'solía decirle a Distributer que no necesita crear una nueva instantánea, solo puede poner en cola los comandos del DIU
sp_addarticle:
exec sp_addarticle
@publication = N'Publication Name',
@article = N'TableNotUsingSnap',
@source_owner = N'dbo',
@source_object = N'TableNotUsingSnap',
@type = N'logbased',
@description = N'',
@creation_script = N'',
@pre_creation_cmd = N'none', /* this is a critical flag - tells SQL Server to not drop/recreate the repl procs/object on the subscriber */
@schema_option = 0x0000000008004093,
@identityrangemanagementoption = N'none',
@destination_table = N'TableNotUsingSnap',
@destination_owner = N'dbo',
@status = 16,
@vertical_partition = N'false',
@ins_cmd = N'CALL [sp_MSins_dboTableNotUsingSnap]',
@del_cmd = N'CALL [sp_MSdel_dboTableNotUsingSnap]',
@upd_cmd = N'SCALL [sp_MSupd_dboTableNotUsingSnap]'
GO
-- Adding the transactional subscriptions
exec sp_addsubscription @publication = N'Publication Name',
@subscriber = N'Subscriber Server',
@destination_db = N'Subscriber DB',
@subscription_type = N'Push',
@sync_type = N'none', /* tell SQL Server not to sync/snapshot this change to the publication */
@article = N'all',
@update_mode = N'read only',
@subscriber_type = 0
GO
5. Sincroniza tus datos
Ahora necesita copiar sus datos a su suscriptor, podría:
- Cree un servidor vinculado y cópielo
- Utilice el asistente de exportación / importación
- Restaurar una copia de seguridad y aplicar diffs
- Extraiga la tabla con el paquete de herramientas SSMS 'Generar declaraciones de inserción ...'
El método exacto que utilice lo dejo al lector, también dependerá de cuánto tiempo esté dispuesto a detener su Agente de distribución.
EXTRA: Como un paso adicional en sus pruebas, aquí hay un buen lugar para ejecutar su script (desde el Paso (B)) para crear acciones del DIU en [TableNotUsingSnap] para que pueda ganar confianza en este método.
6. Reinicie el agente de distribución: en el Distribuidor (Push) o Suscriptor (Pull)
/* example script to add a table to a publication without running the snapshot agent
Steps:
Pre steps:
1. Create table on subscribers
2. Create replication procs on subscribers
Deployment/Potential impact:
3. Stop Distribution Agents to all subscribers for this publication
4. Add article to publication on publisher
5. DTS data from publisher to subscriber
** 6. Start Distribution Agents to all subscribers for this publication
7. Monitor/Verify all data has arrived
=========================================================
Note: check your publication settings:
if @independent_agent = N'false'
you will need to stop the distribution agent which will affect ALL
publications going to that subscriber
if @independent_agent = N'true'
you will need to stop the publication specific distribution agent
(to each subscriber)
Plan your live release around that knowledge!
*/
-- IF PUSH REPLICATION: RUN ON DISTRIBUTION SERVER
-- IF PULL REPLICATION: RUN ON SUBSCRIBER SERVER
/* disable the Job first */
exec msdb..sp_update_job @job_name = 'Distribution agent job', @enabled = 1
GO
/* wait for 10 seconds - precaution ONLY */
WAITFOR DELAY '00:00:10.000'
GO
/* now stop the job */
exec msdb..sp_start_job @job_name = 'Distribution agent job'
GO
/*
Now go and make sure everything is working ok!
*/
