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ORA-07445 [_nsdo+54] and "HS Message To Agent" Wait in Trace Using TOAD (Doc ID 1308787.1)

Last updated on DECEMBER 16, 2021

Applies to:

Oracle Database - Enterprise Edition - Version and later
Gen 1 Exadata Cloud at Customer (Oracle Exadata Database Cloud Machine) - Version N/A and later
Oracle Cloud Infrastructure - Database Service - Version N/A and later
Oracle Database Exadata Express Cloud Service - Version N/A and later
Oracle Database Cloud Exadata Service - Version N/A and later
Information in this document applies to any platform.


When using TOAD the following error may occur -

ORA-07445: exception encountered: core dump [ACCESS_VIOLATION] [_nsdo+54] [PC:0x609AF9E2] [ADDR:0x7A8C838] [UNABLE_TO_READ] []

The stack trace will show -


Stack Trace:
nsdo nsbrecv hortsC_SendExitAge nt hoxexit hogmdis hogdisc xupidhs upidhs kpudtch OCIServerDetach ncodncf npidsc npidsa npitcc ksmupg ksuxds ksudel opidcl opidrv sou2o opimai_real opimai OracleThreadStart@ 4


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