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Sudden occurance of process locks...what to do?

Medium Priority
Last Modified: 2012-08-13

Hi, we noticed the other day that we are getting a lot of process locks on the database coming mainly from our reporting application, cognos.  Performance is generally acceptable and not hampered.  However, the last few days users have been complaining about the slowness of their reports coming back in cognos.

Upon investigation, we are seeing that SQL Server has locks on majority of the requests coming through.  The locks are as follows:


The wait resource varies to being blank, saying PARALLEL_PAGE_SUPPLIER followed by a number in brakets or just a wierd number that says something like 5:3:2130532 ....

In reading up on these locks I know they are lightweight locks and deal with network performance, parallelism, and i/o functions... but I'm not really sure what to do about it?

Is this something wrong with SQL that is causing these bottlenecks or is it the cognos application or is it our network?  Is there something in SQL I can do to remedy this or would the networking people need to get involved?

Watch Question

Can you add one or more covering indexes on the tables that COGNOS is using for the reports?
If you can do that, you may be able to decrease the database contention that is developing.


No, I had made a post on here a few weeks ago about us having too many indexes! :)  We have some tables that have over 21 indexes on them.

I'm more interested in what is going on here and what exactly these locks are telling me.
Database Architect - Dba - Data Scientist
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