ORA-600 [4000] "trying to get dba of undo segment

ORA-600 [4000] "trying to get dba of undo segment header block from usn" [ID 47456.1]
		Modified 05-MAR-2010     Type REFERENCE     Status PUBLISHED

Note: For additional ORA-600 related information please read 

PURPOSE:            
  This article discusses the internal error "ORA-600 [4000]", what 
  it means and possible actions. The information here is only applicable 
  to the versions listed and is provided only for guidance.
 
ERROR:              
  ORA-600 [4000] [a]
 
VERSIONS:           
  version 6.0 to 9.2
 
DESCRIPTION:

  This has the potential to be a very serious error.

  It means that Oracle has tried to find an undo segment number in the 
  dictionary cache and failed.

ARGUMENTS:
  Arg [a] Undo segment number

FUNCTIONALITY:      
  KERNEL TRANSACTION UNDO

IMPACT:             
  INSTANCE FAILURE - Instance will not restart
  STATEMENT FAILURE

SUGGESTIONS: 

  As per , this can be seen when executing DML on tables residing 
  in tablespaces transported from another database.

  It is fixed in 8.1.7.4, 9.0.1.4 and 9.2.0.1 The workaround however is to 
  create more rollback segments in the target database until the highest 
  rollback segment number (select max(US#) from sys.undo$;) is at least 
  as high as in equivalent max(US#) from the source database.

  It has also been seen where memory has been corrupted so try shutting 
  down and restarting the instance.

  If the database will not start contact Oracle Support Services 
  immediately, providing the alert.log and associated trace files.
  
KNOWN ISSUES:



	 

Known Bugs
NB
Bug
Fixed
Description
* 
11.2.0.2, 12.1
OERI[25027]/OERI[4097]/OERI[4000] in plugged datafile after CREATE CONTROLFILE in 11g See 
11.1.0.6
OERI [4000] during startup 
9.2.0.5, 10.1.0.2
STARTUP after an ORA-701 fails with OERI[4000] 
9.2.0.5, 10.1.0.2
OERI[4000] / index corruption can occur during index coalesce 
8.1.7.4, 9.0.1.4, 9.2.0.1
OERI:4506 / OERI:4000 possible against transported tablespace 
+ 
7.3.4.2, 8.0.3.0
ORA-600[4000] from altering storage of BOOTSTRAP$