[ https://issues.apache.org/jira/browse/DERBY-5980?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]
Mike Matrigali updated DERBY-5980: ---------------------------------- Component/s: Store > Extremely slow roll forward when booting database that wasn't properly closed > ----------------------------------------------------------------------------- > > Key: DERBY-5980 > URL: https://issues.apache.org/jira/browse/DERBY-5980 > Project: Derby > Issue Type: Bug > Components: Store > Affects Versions: 10.9.1.0 > Environment: Windows 7, Embedded mode > Reporter: Igor Sereda > > Reproduction sequence: > 1. Open database in embedded mode > 2. Run a considerably large transaction - for example, one that creates 10 - > 20 MB of db logs > 3. Commit > 4. Do NOT close the Connection > 5. Exit the application (through System.exit() for example) > 6. Restart the application and open the database > Observed: > Opening connection is extremely slow. It takes up 30- 60 seconds on the 10-20 > MB transaction, and for larger transactions it takes forever. > Looking at the process with FileMon utility, I can see that redo log files > are mostly read *1 byte at a time*. :( > I bet you can improve the performance 100-fold by getting the whole log into > memory first. -- This message is automatically generated by JIRA. If you think it was sent incorrectly, please contact your JIRA administrators For more information on JIRA, see: http://www.atlassian.com/software/jira