You are facing huge consumes of virtual memory due to process oravssw.exe at your Oracle host in a Windows environment. At the Windows event log you can see messages like this:
Windows successfully diagnosed a low virtual memory condition. The following programs consumed the most virtual memory: oravssw.exe (1532) consumed 20079030272 bytes
At SAP the following runtime errors may occur (ST22):
Oracle Release independent, SAP Release independent, Windows OS
KBA , BC-DB-ORA-SYS , Database Interface / DBMS for Oracle , BC-OP-NT , Windows , Problem
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