► -|- 12.2 PDB (Pluggable Database) instance crashed with the next error:
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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
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ORA-07445: exception encountered: core dump [ktmseginfopoll_1()+44] [SIGSEGV] [ADDR:0x81] [PC:0x8545CAC] [Address not mapped to object] []
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This is a timing issue signaled incorrectly when an instance is being stopped.
原因:
► -|- The same problem is reported in the following bug:
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► Internal Bug 26433996 - ORA-7445 [KTMSEGINFOPOLL_1()+44] [SIGSEGV]
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处理方法:
► -|- Please apply the following patch on the affected RDBMS Oracle Home: