Application Slowness

Experts,

APPL Team is complaining that following below error leads to application slowness.

As checked database , we do not see any abnormal wait events.

Kindly help us to understand more about these issue ..

APPL error logs

Please check LEO database (NGLOBAL) in the logs we are seeing below errors:

2023-01-20 16:34:46 [http-nio-8080-exec-13] ERROR o.h.e.jdbc.spi.SqlExceptionHelper - ORA-01033: ORACLE initialization or shutdown in progress

2023-01-20 16:34:46 [scheduler-9] ERROR o.h.e.jdbc.spi.SqlExceptionHelper - ORA-01033: ORACLE initialization or shutdown in progress

2023-01-20 16:34:46 [http-nio-8080-exec-18] ERROR o.h.e.jdbc.spi.SqlExceptionHelper - ORA-01033: ORACLE initialization or shutdown in progress