ORA-00600: internal error code, arguments: [kmcmbf: pga ref], [CANNOT MIGRATE] (Doc ID 2275364.1)

Last updated on JUNE 09, 2017

Applies to:

Oracle Database - Enterprise Edition - Version 12.1.0.2 and later
Information in this document applies to any platform.

Symptoms

Intermittent and unpredictable ORA-00600 [kmcmbf: pga ref], [CANNOT MIGRATE] are occurring in a 12.1.0.2 db:

...
Wed Mar 08 08:33:42 2017
2:qmhProcessRequestDataCB,401
Wed Mar 08 08:37:45 2017
1:qmhProcessRequestDataCB,401
Errors in file
/dbss/ora2028/u00/applmgr/admin/mydb0/diag/rdbms/mydb0/mydb0_1/trace/mydb0_1_s000_35819.trc (incident=2335828):
ORA-00600: internal error code, arguments: [kmcmbf: pga ref], [CANNOT MIGRATE], [0x31B6F2C1B8], [], [], [], [], [], [], [], [], []
Incident details in:
/dbss/ora2028/u00/applmgr/admin/mydb0/diag/rdbms/mydb0/mydb0_1/incident/incdir_2335828/mydb0_1_s000_35819_i2335828.trc
Non critical error ORA-48913 caught while writing to trace file
"/dbss/ora2028/u00/applmgr/admin/mydb0/diag/rdbms/mydb0/mydb0_1/incident/incdir_2335828/mydb0_1_s000_35819_i2335828.trc"
...

XDB dispatcher is configured:

<httpconfig>
...
  <http2-port xmlns="http://xmlns.oracle.com/xdb/xdbconfig.xsd">9443</http2-port>
  <http2-protocol xmlns="http://xmlns.oracle.com/xdb/xdbconfig.xsd">tcps</http2-protocol>
  <authentication xmlns="http://xmlns.oracle.com/xdb/xdbconfig.xsd">
    <allow-mechanism>basic</allow-mechanism>
    <digest-auth>
      <nonce-timeout>300</nonce-timeout>
    </digest-auth>
    </authentication>
  <http-host xmlns="http://xmlns.oracle.com/xdb/xdbconfig.xsd">mydbserver1.oracle.com</http-host>
  <http2-host xmlns="http://xmlns.oracle.com/xdb/xdbconfig.xsd">mydbserver2.oracle.com</http2-host>
  <white-list xmlns="http://xmlns.oracle.com/xdb/xdbconfig.xsd">
    <white-list-pattern>/*</white-list-pattern>
  </white-list>
</httpconfig>

Cause

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