Virtual user scale up not working in TPROC-C workload

[Ora-DBA]

Recently I'm using HammerDB benchmarking for Oracle 19c database. While running TPROC-C workload, with single virtual user test is running fine. When we scale up virtual user more than 1 then GUI hammerdb getting closed suddenly without showing any errors or warnings.
Is this expected behaviour or any environmental changes required to get it done?

Environment details as below. HammerDB Version :- Version: 4.8 HammerDB Interface :- GUI Operating System:

• Server OS: Oracle Linux 8.6
• Client OS: Windows 2019

Database Server :

• Database name: Oracle
• Database Release Version : 19.3 **Database Client : 19c

[sm-shaw]

Hi, Yes this long-standing Oracle bug is in the release notes:

Oracle on Windows: Oracle Bug 12733000 OCIStmtRelease crashes or hangs if called after freeing the service context handle

to fix put this in your windows client SQLNET.ORA

SQLNET.AUTHENTICATION_SERVICES = (NTS) DIAG_ADR_ENABLED=OFF DIAG_SIGHANDLER_ENABLED=FALSE DIAG_DDE_ENABLED=FALSE

[Ora-DBA]

Thank you Steve for quick response. after putting above settings in SQLNET.ORA, solved my issue. thanks again !!