The database recovery process after an abnormal system end

After an abnormal system end, the system proceeds through several automatic recovery steps. The system rebuilds the directory and synchronizes the journal to the files being journaled. The system performs recovery operations during IPL and after IPL.

• Database file recovery during the IPL
  During the initial program load (IPL), nothing but the recovery function is active on the system.
• Database file recovery after the IPL
  This recovery of database files runs after the initial program load (IPL) is completed. Interactive and batch jobs can continue with the recovery.
• Effects of the storage pool paging option on database recovery
  The shared pool paging option controls whether the system dynamically adjusts the paging characteristics of the storage pool for optimum performance.
• Database file recovery options table
  This topic outlines the recovery options for the database files.