March 8, 2013 at 2:19 am
Hallo
in case a row filter exists on a published table in a snapshot replication, does the snapshot agent takes locks at rows level rather than at table level?
I'm not finding any documentation about that.
(In my specific case, I set up a snapshot replication, that sometimes fails since third party applications lock published tables for a long time.
I raised the snapshot agent timeout to 3600s, but it's not the definitive solution)
thanks in advance
March 8, 2013 at 12:27 pm
As usual, it depends.
Replication uses locking like anything else. Even if you have a row filter on, unless that's a VERY small row filter (5000 rows or less), the possibility to want to upgrade to a table lock exists. Doesn't mean it will however, it will simply try.
However, if your 3rd party apps have exclusive locks on rows your replication needs, there's nothing your locking techniques are going to fix for that unless you start doing some madness like read uncommitted or something equally painful... which I'm not even sure you CAN do in replication. I certainly hope not.
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