committed this fix as svn 329934.

Suresh Thalamati (JIRA) wrote:
     [ http://issues.apache.org/jira/browse/DERBY-239?page=all ]

Suresh Thalamati updated DERBY-239:
-----------------------------------

    Attachment: onlinebackup_2.diff

Fix  to the problem found by Øystein  while reviewing the previous online 
backup patch(online_backup1.diff).
Backup of a container code was doing a seek incorrectly on the file container instead of the backup file. Tests: All tests passed on jdk142 Windows XP. It would be great if some one can commit this patch.

Thanks
-suresht

Need a online backup feature  that does not block update operations   when 
online backup is in progress.
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        Key: DERBY-239
        URL: http://issues.apache.org/jira/browse/DERBY-239
    Project: Derby
       Type: New Feature
 Components: Store
   Versions: 10.1.1.0
   Reporter: Suresh Thalamati
   Assignee: Suresh Thalamati
Attachments: onlinebackup.html, onlinebackup_1.diff, onlinebackup_2.diff

Currently Derby allows users to perfoms  online backups using 
SYSCS_UTIL.SYSCS_BACKUP_DATABASE() procedure,  but while the backup is in 
progress, update operations are temporarily blocked, but read operations can 
still proceed.
Blocking update operations can be real issue specifically in client server environments, because user requests will be blocked for a long time if a backup is in the progress on the server.



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