You want to update your DLP Oracle DB to latest Oracle CPU and see Opatch failed with error code = 73. In addition, in the opatch log you find the below SEVERE entry:
[May 8, 2024 2:11:38 PM] [SEVERE] OUI-67073:UtilSession failed: null
DLP 15.X / 16.X
Oracle 19c
OPatch is not updated to the same version as provided in the CPU package.
Before applying the latest CPU patch based on Download and install Oracle Critical Patch Updates (CPU) for Symantec DLP (broadcom.com), unpack OPatch files provided with the CPU to ORACLE_HOME (e.g. C:\oracle\product\19.3.0.0\db_1). You may want to backup the existing OPatch directory before replacing it with newest files.