Forward recovery of versioned index spaces

BMC AMI Recover supports the forward recovery of a versioned index.

Versioning occurs when the attributes of an index column have been altered. BMC AMI Recover needs information from the header page and the directory page to recover such an index space.

  • The header page is always the very first page of any partition or the very first piece of a nonpartitioned index (NPI).
  • Page 4 will always be a directory page. If the index has been versioned several times, there might be more directory pages throughout the index.

Related topic

Key-concepts

BMC40855 CANNOT OBTAIN DIRECTORY PAGE INFORMATION. REQUESTED RECOVERY IS NOT POSSIBLE.

In the case of a versioned index, BMC AMI Recover reorders the recovery request to use the correct order of DSNUM. For example, BMC AMI Recover accepts the following command statements, but reorders the request to process DSNUM 1 first:

RECOVER INDEX (I1) DSNUM 5
RECOVER INDEX (I1) DSNUM 1


 

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