Plesk panel is slow/unstable if session files are too numerous

Created:

2016-11-16 13:03:13 UTC

Modified:

2017-04-24 11:59:06 UTC

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Plesk panel is slow/unstable if session files are too numerous

Applicable to:

  • Plesk 11.5 for Windows
  • Plesk 12.0 for Windows
  • Plesk 9.x and below for Windows

Symptoms

Plesk host / Plesk Control Panel / Plesk container is slow or unresponsive.Some services (for example RDP) can be unstable.Also migration of large number of subscriptions may stop with "Failed" status and referrals to psabackup.dll

Cause

A lot of session files (like 500,000) are contained in the folder " %plesk_dir%\\admin\\session ".

Resolution

Remove all files from the folder " %plesk_dir%\\admin\\session ".The following command in cmd.exe window can be used:

    del /f/s/q "%plesk_dir%\\admin\\sessions" > nul
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