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update statistics and table access

Former Member
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Adaptive Server Enterprise/15.7.0/EBF 22639 SMP SP52 /P/Sun_svr4/OS 5.10/ase157sp5x/3293/64-bit/FBO/Wed May 21 02:49:14 2014


Hi Community,

I'd like to know if it's allowed to run update statistics on day-time while people are connected to the system? or is it better to do it when there are no activities on the DB?

From my point of view if people just do some selects, the update statistics can be executed.

On the other, does 'update statistics' apply an exclusive lock?

Thank you


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Active Contributor
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This manual page discusses the locks held by various forms of the update statistics command: Types of Scans Performed During update statistics