After an upgrade from Oracle 11g to Oracle 12c, we are facing memory leak issues.
WAAE 11.3.6 SP4 on Linux + Oracle
The Oracle 12c Client Libraries cause the memory leak issue.
The encountered problem is related to Oracle 12c Client Libraries having a known memory leak issue.
The recommended solution is to use the Oracle 11g R2 Client Libraries to connect to Oracle 12c Servers.