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Shared Server Terminates with an ORA-07445 [qmvcsReadInit()+21] (Doc ID 2346482.1)

Last updated on MARCH 09, 2019

Applies to:

Oracle Database - Enterprise Edition - Version to [Release 12.1 to 12.2]
Oracle Database Cloud Schema Service - Version N/A and later
Oracle Database Exadata 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
Information in this document applies to any platform.


In a 12c database that is using XDB HTTP where virtual circuit connections goes >= 8159, the shared server terminates with:

ORA-07445: exception encountered: core dump [qmvcsReadInit()+21] [SIGSEGV] [ADDR:0xD993BA8] [PC:0x8ADED55] [Invalid permissions for mapped object] []

With Call Stack:

qmvcsReadInit <- qmps_run_internal <- qmps_run

Querying V$SHARED_SERVER_MONITOR shows MAXIMUM_CONNECTIONS is incrementing to > 8100.


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