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Questions tagged [deadlocks]

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Deadlocked queries cause an instant error for end-users, but are retried in other circumstances

We have a lot of smart groups, and consequently a lot of deadlocks. There's already code in Civi that detects deadlock Exceptions, and then retries the query a few times. This is really helpful - I ...
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CiviMail Deadlock Issue

I am facing deadlock on civicrm_acl_cache. I am sending email to 400,000 users. Many times, deadlock occur and due to system lock website goes down. Need help from team
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Deadlock when executing job to clear group cache

We have had issues where we can't send a mailing. Trying to send a test mailing gets stuck on "saving". I attempted to run the job to flush the smart group cache and the job log reports that it ...