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1918661 - Mixed data and log segment database may take longer to recover than in previous versions - SAP ASE


  • Database recovery always takes much longer than other ASEs with same database
  • In the error log, it shows only 1 log record for REDO pass. It still takes more than 10-20 minutes to recover
  • In the error log, there is a time gap between the REDO pass and the timestamp messages
  • Online database (very) slow
  • Recovery of a very large database with mix data and log takes hours
  • Accidental switch of a database with separate data and log segments to mixed data and log segments causes slow database recovery 
  • Here is an example from the error log:

00:01:00000:00001:2013/08/09 14:55:12.46 server Started REDO pass for database 'database_name'. The total number of log records to process is 1.
00:01:00000:00001:2013/08/09 14:55:12.47 server Completed REDO pass for database 'database_name'.
00:00:00000:00001:2013/08/09 15:06:10.06 server Timestamp for database 'database_name' is (0xc17b, 0x31f7b353). ---> 10 mins gap
00:00:00000:00001:2013/08/09 15:06:10.06 server Recovery of database 'database_name' will undo incomplete nested top actions.



  • SAP Adaptive Server Enterprise (ASE). Not version specific.


SAP Adaptive Server Enterprise 15.7 ; SAP Adaptive Server Enterprise 16.0 ; Sybase Adaptive Server Enterprise 15.5


MDL (Mixed data and Log), slow recovery, sp_logdevice, CR#657529, CR657529, 657529 , KBA , sap adaptive server enterprise , BC-SYB-ASE , Sybase ASE Database Platform (non Business Suite) , Bug Filed

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