[AWA] WP memory usage increases over time after upgrade Oracle database

Products

• CA Automic Workload Automation - Automation Engine

Issue/Introduction

After upgrading of Oracle database, AE processes consume memory without releasing.
- Oracle database was upgraded from 12.1 to 12.2
- Since then system processes (CP & WP) occupied more and more memory overtime until server's RAM is exhausted
- Upgrading AE from 12.2.1HF4 to 12.3.1 and the issue still persists.
- Another environment with original AE 12.2.1HF4 works normally.

Cause

Analysis from R&D:
- If AE core is still the same, the only change to the environment was the new Oracle version, then the cause must be an issue with Oracle client.

Environment

Release : 12.3

Component : AUTOMATION ENGINE

Resolution

Upgrade to corresponding oracle client and the issue does not appear anymore.