Transaction log usage grows due to replication even if I don't use replication at all

Question

Hi
The transaction log usage keeps growing a lot on my user database since few days back. the database is in full recovery model and I do transaction log backups every 10 minutes. The DB was part of Database Mirroring but I removed it. The usage was controlled
for many years by the backups but something happened that is messing up the transaction log
this is DBCC OPENTRAN
Transaction information for database 'MyDB'.
Replicated Transaction Information:
        Oldest distributed LSN     : (0:0:0)
        Oldest non-distributed LSN : (1450911:6823:1)
DBCC execution completed. If DBCC printed error messages, contact your system administrator.
log_reuse_wait_desc reports REPLICATION
the funny thing is that I am not using replication at all. I am using CDC.
To reduce the transaction log usage I run below statement every day since the problem started
EXEC sp_repldone @xactid = NULL, @xact_segno = NULL, 
    @numtrans = 0, @time = 0, @reset = 1
Any idea what should I do to solve this problem and be back on a normal situation?
BTW, The server is SQL 2012 (11.0.2383)
Thanks
Javier Villegas |
@javier_vill | http://sql-javier-villegas.blogspot.com/
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Answer 1

CDC uses the replication log reader agent and if you manually ran sp_repldone like that you lost information in your CDC capture.  If the capture job can't keep up with the workload or is not running for CDC, you would have the exact problems you describe.
 If you execute sp_repldone like that, you might as well disable CDC.
http://technet.microsoft.com/en-us/library/dd266396(v=sql.100).aspx
Jonathan Kehayias | Principal Consultant | MCM: SQL Server 2008
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