Upgrading to 13.9.4.2.5 (or higher) is often a for applying modern Patch Set Updates (PSU) . Newer versions of OPatch: Fix security vulnerabilities in the patching tool itself. Support newer Java versions (JDK 8+).
OPatch is distributed by Oracle as a patch itself. To download version 13.9.4.2.5, follow these steps: : Log in to My Oracle Support (MOS). opatch version 13.9.4.2.5 download
The software is available at no additional cost to licensed Oracle customers. However, you must have a valid Oracle Support contract to access the download. Upgrading to 13
OPatch Version: 13.9.4.2.5
Guide to OPatch Version 13.9.4.2.5: Download and Upgrade OPatch version 13.9.4.2.5 opatch version 13.9.4.2.5 download