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sudden performance degradation


sudden performance degradation

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Shark Energy
Shark Energy
Mr or Mrs. 500
Mr or Mrs. 500 (573 reputation)Mr or Mrs. 500 (573 reputation)Mr or Mrs. 500 (573 reputation)Mr or Mrs. 500 (573 reputation)Mr or Mrs. 500 (573 reputation)Mr or Mrs. 500 (573 reputation)Mr or Mrs. 500 (573 reputation)Mr or Mrs. 500 (573 reputation)

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Long story short.
7 year old physical server with sql 2000.
2 weeks ago went mad slow. No code changes. We have a data rep product from db2 that stopped working due to lock timeouts. I fixed this out of hours with no users on (100000000 records refreshed) and it now runs fine. We had data on the physical disk andnlogs on iscsi san.added a ssd san for the data files and migrated them across.
All working ok but terrible.performance remains. Users getting slow access app perf or timing out. Overnight job that took 2 hours takes 30 etc.
Using profiler found missing stats but no improvement. Index tuner nothing.execution plans are ok. Slow server side and client side.

Perfmon sql counters have disappeared since did the disk swap.so.not able to use.
Most users are connecting via access apps on one terminal server.

Getting hammered on this. Any advice?
GilaMonster
GilaMonster
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Group: General Forum Members
Points: 47181 Visits: 44356
Guessing without metrics.

Try updating stats on all tables involved in the process with full scan.


Gail Shaw
Microsoft Certified Master: SQL Server, MVP, M.Sc (Comp Sci)
SQL In The Wild: Discussions on DB performance with occasional diversions into recoverability

We walk in the dark places no others will enter
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