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NB_97286323-Newcomer
3-Newcomer
February 25, 2026
Question

Windchill 12 Performance Slow. Queues get high quicky and degrades performance

Since Migration from Oracle to MS SQL Database, windchill performance is unstable.
Performance degrades over time after Restart.
Only Restart helps to make it better for a short time after which it degrades again.

The Workflows become very slow. Tasks which shall be triggered in less than a minute takes more than 10-20 minutes, sometimes more.

Sync robots are extremely delayed as well.

We try clearing the blocking sessions in DB, but not much help

2 replies

TDT18-Opal
18-Opal
February 25, 2026

Hi @NB_9728632,

Are you certain that the issue is related to the MS SQL database?

Have you tried running the SQL Server Performance Diagnostic script mentioned in below article?

https://www.ptc.com/en/support/article/CS123644?source=search

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NB_97286323-NewcomerAuthor
3-Newcomer
March 4, 2026

Thanks for the suggestion. apparently, the slowness of Windchill was due to unorphaned objects and this was resolved in the meantime.

Nevertheless, we have created a PTC case for the build of notification queues to idenfity the rootcause.

Thanks again

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