OPatch Error "Backup libraries to be regenerated failed with error message null" When Applying WebLogic Server PSU
(Doc ID 2324404.1)
Last updated on SEPTEMBER 25, 2020
Applies to:Oracle WebLogic Server - Version 184.108.40.206.0 and later
Information in this document applies to any platform.
On WebLogic Server 12c, using the OPatch utility to apply a Patch Set Update (PSU), when an error occurs:
Backup libraries to be regenerated failed with error message "null"
OPatch logs with full error stack:
- It appears that the patch is in fact being applied to the server.
- This problem only occurs on Windows and cannot be reproduced on Linux.
- The problem occurs only when a previous PSU is in place before the new PSU is applied.
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