Connecting To A PDB Database Fails With ORA-00600 [kpdbAttachSga: bad pdb]
(Doc ID 1982064.1)
Last updated on FEBRUARY 03, 2019
Applies to:Oracle Database - Enterprise Edition - Version 220.127.116.11 to 18.104.22.168 [Release 12.1]
Information in this document applies to any platform.
When connecting from sqlplus to a Pluggable database (PDB) using the PDB's Net Service Name, for example:
sqlplus <username>/<password>@<NET Service Name>
sqlplus sys/<sys password>@<NET Service Name> as sysdba
the following error is reported:
ORA-03135: connection lost contact
Process ID: 0
Session ID: 0 Serial number: 0
and in the alert log file:
ORA-00600: internal error code, arguments: [kpdbAttachSga: bad pdb], ,[<NET Service Name>], , , , , , , , , 
The call stack in the trace file written by the ORA-600 error includes the following functions:
kpdbAttachSga <- opiino <- opiodr <- opidrv <- sou2o
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