sp_setsubscriptionxactseqno (Transact-SQL)

Straipsnis
04/09/2024

Applies to: SQL Server

Used during troubleshooting to specify the last delivered transaction using the log sequence number (LSN), allowing the Distribution Agent to begin delivering at the next transaction. After it restarts, the Distribution Agent returns transactions greater than this watermark (LSN) from the Distribution database cache (msrepl_commands). This stored procedure is executed at the Subscriber on the subscription database. Not supported for non-SQL Server Subscribers.

Caution

Using this stored procedure incorrectly or specifying an incorrect LSN value can cause the Distribution Agent to revert changes that were already applied at the Subscriber or skip over all remaining changes.

Transact-SQL syntax conventions

Syntax

sp_setsubscriptionxactseqno
    [ @publisher = ] N'publisher'
    , [ @publisher_db = ] N'publisher_db'
    , [ @publication = ] N'publication'
    , [ @xact_seqno = ] xact_seqno
[ ; ]

Arguments

[ @publisher = ] N'publisher'

The name of the Publisher. @publisher is sysname, with no default.

[ @publisher_db = ] N'publisher_db'

The name of the publication database. @publisher_db is sysname, with no default. For a non-SQL Server Publisher, @publisher_db is the name of the distribution database.

[ @publication = ] N'publication'

The name of the publication. @publication is sysname, with no default. When more than one publication shares the Distribution Agent, you must specify a value of ALL for @publication.

[ @xact_seqno = ] xact_seqno

The LSN of the next transaction at the Distributor to be applied at the Subscriber. @xact_seqno is varbinary(16), with no default.

Result set

Column name	Data type	Description
`ORIGINAL XACT_SEQNO`	varbinary(16)	The original LSN of the next transaction to be applied at the Subscriber.
`UPDATED XACT_SEQNO`	varbinary(16)	The updated LSN of the next transaction to be applied at the Subscriber.
`SUBSCRIPTION STREAM COUNT`	int	The number of subscription streams used during the last synchronization.

Return code values

0 (success) or 1 (failure).

Remarks

sp_setsubscriptionxactseqno is used in transactional replication.

sp_setsubscriptionxactseqno can't be used in a peer-to-peer transactional replication topology.

sp_setsubscriptionxactseqno can be used to skip a specific transaction that is causing an error when applies at the Subscriber. When there's a failure and after the Distribution Agent stops, call sp_helpsubscriptionerrors at the Distributor to retrieve the xact_seqno value of the failed transaction, and then call sp_setsubscriptionxactseqno, passing this value for @xact_seqno. This ensures that only the commands after this LSN are processed.

Specify a value of 0 for @xact_seqno to deliver all pending commands in the distribution database to the Subscriber.

sp_setsubscriptionxactseqno might fail if the Distribution Agent uses multi-subscription streams.

When this error occurs, you must run the Distribution Agent with a single subscription stream. For more information, see Replication Distribution Agent.

Permissions

Only members of the sysadmin fixed server role or db_owner fixed database role can execute sp_setsubscriptionxactseqno.

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