ORA-00600: internal error code, arguments: [4000], [447], [1], [1], [], [], [], [], [], [], [], []

 

I am writing this blog because I could not find the solution of this issue online or on MOS.

Issue: I received this ORA-00600 error after I upgrade PDB from 12c to 19c.

ORA-00600: internal error code, arguments: [4000], [447], [1], [1], [], [], [], [], [], [], [], []

This error occurs when I run some SQL's on this PDB and I also can see this in alert log file.

Cause: Actually this is 12c bug and there is no fix for this except the workaround. 

Workaround: The workaround is to switch to shared undo and then switch back to local undo, unfortunately this can only be performed at CDB level

Steps:

1) connect to CDB as sysdba

connect / as sysdba
SQL> alter system set cluster_database=false scope=spfile;

System altered.

2)Stop all the database instances
srvctl stop database -d DB_NAME

3) Connect with sqlplus to one of the instances and execute

SQL> startup upgrade;
ORACLE instance started.

Total System Global Area 7953271232 bytes
Fixed Size                  9157056 bytes
Variable Size            4731174912 bytes
Database Buffers         2936012800 bytes
Redo Buffers              276926464 bytes
Database mounted.
Database opened.
SQL> alter database local undo off;

Database altered.

SQL> shutdown immediate;
Database closed.
Database dismounted.
ORACLE instance shut down.
SQL> startup;
ORACLE instance started.

Total System Global Area 7953271232 bytes
Fixed Size                  9157056 bytes
Variable Size            4731174912 bytes
Database Buffers         2936012800 bytes
Redo Buffers              276926464 bytes
Database mounted.
Database opened.
SQL>
SQL> ALTER PLUGGABLE DATABASE ALL OPEN;

Pluggable database altered.
SQL> shutdown immediate;
Database closed.
Database dismounted.
ORACLE instance shut down.
SQL> startup upgrade;
ORACLE instance started.

Total System Global Area 7953271232 bytes
Fixed Size                  9157056 bytes
Variable Size            4731174912 bytes
Database Buffers         2936012800 bytes
Redo Buffers              276926464 bytes
Database mounted.
Database opened.
SQL> alter database local undo on;

Database altered.

SQL> alter system set cluster_database=true scope=spfile;

System altered.

SQL> shutdown immediate;
Database closed.
Database dismounted.
ORACLE instance shut down.
SQL>
       

4) Start the database normally and open all the pdbs if needed
srvctl start database -d DB_NAME

Now connect to the PDB and run the SQL again and we won't see the error.

Hope this helps!