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create procedure sys.sp_MSrepl_backup_start
    declare @sync_bit int
    declare @dist_bit int

    set nocount on

    set @sync_bit = 32
    set @dist_bit = 16

    -- security Check
    -- BACKUP/RESTORE statements require sysadmin, dbcreator, dbo
    if isnull(is_srvrolemember('sysadmin'),0) = 0
        and isnull(is_srvrolemember('dbcreator'),0) = 0
        and isnull(is_member('db_owner'),0) = 0
        raiserror(18799, 16, -1)
        return (1)

    -- If this is a distribution database and it is marked by 'sync with backup'
    if exists (select * from master.dbo.sysdatabases where
        name = db_name() collate database_default and
        category & (@sync_bit | @dist_bit) = @sync_bit | @dist_bit)
        update MSrepl_backup_lsns set next_xact_id = t2.xact_id, next_xact_seqno = m.xact_seqno from
            (select tm.publisher_database_id, max(tm.xact_seqno) from
                -- max seqno of xacts not involved in partial tran processing
                (select t.publisher_database_id, max(substring(t.xact_seqno, 1, 10)) from
                    MSrepl_transactions t where
                    not t.xact_id = 0x0
                    group by t.publisher_database_id, substring(t.xact_seqno, 1, 10)
                    having count(t.xact_seqno) < 2
                -- max seqno of xacts involved in and completed partial tran processing
                select t.publisher_database_id, max(substring(xact_seqno, 1, 10)) from
                    MSrepl_transactions t where
                    not t.xact_id = 0x0
                    and t.xact_id = substring(t.xact_seqno, 1, 10)
                    group by t.publisher_database_id
                )as tm(publisher_database_id, xact_seqno) -- derived table containing up to 2 rows per publication_database_id
            group by tm.publisher_database_id -- derived table containing up to 1 row per publication_database_id
            )as m(publisher_database_id, xact_seqno),
            MSrepl_transactions t2
        where m.publisher_database_id = MSrepl_backup_lsns.publisher_database_id and
                t2.publisher_database_id = MSrepl_backup_lsns.publisher_database_id and
                t2.xact_seqno   = m.xact_seqno
        if @@error <> 0
            return 1

    return 0

Last revision 2008RTM
See also

  sp_MSrestoredbreplication (Procedure)


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