CSCvf26511 - Post Upgrade switch version failing with acquired lock failed error seen on chilika SU2 PLM

[doanhuuhiep]

I meet the same error when I upgrade CUCM, CUP and CUC to 11.5.1 SU3.

[John Watkins · Accepted solution]

Download and mount the recovery CD. When prompted enter "s" (without qoutes) to run the switch version. unmount the CD, and they should boot to the new version.

[adnanhassan1]

it comes when database is locked...most likely caused by a backup taken just prior to upgrading...during backup it locks the database and should unlock it when completed but doesn't happen sometimes...so have to restart the system to restart the database or take root account and set some files right to unlock...restart is always a simpler action if possible..