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12.2 PDB (Pluggable Database) instance crashed with ORA-07445: [ktmseginfopoll_1()] (Doc ID 2680780.1)

Last updated on APRIL 17, 2023

Applies to:

Oracle Database - Enterprise Edition - Version to [Release 12.2 to 18]
Information in this document applies to any platform.


► -|- Problem:

► -|- 12.2 PDB (Pluggable Database) instance crashed with the next error:
SQL> SQL> alter pluggable database <DB_NAME> close immediate instances=('<INSTANCE_NAME>')
2 /

Pluggable database altered.

SQL> alter pluggable database <DB_NAME> open instances=('<INSTANCE_NAME>');
alter pluggable database <DB_NAME> open instances=('<INSTANCE_NAME>')
ERROR at line 1:
ORA-03135: connection lost contact
Process ID: 345786
Session ID: 1453 Serial number: 28961
ORA-07445: exception encountered: core dump [ktmseginfopoll_1()+44] [SIGSEGV] [ADDR:0x81] [PC:0x8545CAC] [Address not mapped to object] []

This is a timing issue signaled incorrectly when an instance is being stopped.


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