ORA-600 2663

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标题:ORA-600 2663

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在大家熟悉的ORA-600 2662错误中还有一个类似的ORA-600 2663的错误,以下是对该2663的解释说明

ERROR:
  Format: ORA-600 [2663] [a] [b] {c} [d]

VERSIONS:
  versions 10.1 to 11.1

DESCRIPTION:
  A data block SCN is ahead of the current SCN.

  The ORA-600 [2663] occurs when an SCN is compared to the dependent SCN 
  stored in a UGA variable.

  If the SCN is less than the dependent SCN then we signal the ORA-600 [2663]
  internal error.

ARGUMENTS:
  Arg [a]  Current SCN WRAP
  Arg [b]  Current SCN BASE
  Arg {c}  dependent SCN WRAP
  Arg [d]  dependent SCN BASE 

FUNCTIONALITY:
  Kernel Cache Redo File Redo Generation

IMPACT:
  INSTANCE FAILURE
  POSSIBLE PHYSICAL CORRUPTION

SUGGESTIONS:
  There are different situations where ORA-600 [2663] can be raised.

  It can be raised on startup or duing database operation.

  If not using RAC, Real Application Clusters,, check that 2 instances 
  have not mounted the same database.

  Check for SMON traces and have the alert.log and trace files ready
  to send to support.

  Check the SCN difference [argument d]-[argument b].

  If the SCNs in the error are very close, then try to shutdown and startup
  the instance several times. 

  In some situations, the SCN increment during startup may permit the 
  database to open. Keep track of the number of times you attempted a 
  startup.
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