Applying PSU results “patching Following executables are active”

while patching oracle 12c database on Linux OS environment, i faced the below error while applying the patch using Opatch utility (although the database is shutdown):


Verifying environment and performing prerequisite checks…

Prerequisite check “CheckActiveFilesAndExecutables” failed.

The details are:

Following executables are active :


UtilSession failed: Prerequisite check “CheckActiveFilesAndExecutables” failed.



find the process that is locking the file system using the fuser command

fuser -u /oracl/db11/product/

and then kill it using kill -9 command


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