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Avoid Single point of failure for Db2's critical files
If the critical files of Db2 damage, e.g. by erroneously deletion, file system corruption Db2 will no longer be available (#usable). Since some of the critical files are permanently updated a restore of the critical files does solve the problem. A loss of (part of) the local database directory requires a complete restore of a database which means hours of outage.
Mirroring the local database directory to a different path (preferably a different file system) could make Db2 tolerant to such kind of problems. This kind of enhancement could work roughly comparable to MIRRORLOGPATH, which allows to configure a mirror path for the log files, a DB parameter like DBDIRMIRRORPATH could allow to specify a mirror path for the local database directory
SQLOGCTL.LFH.1 and SQLOGCTL.LFH.2 in different directories(RIMS)
SQLOGCTL.LFH.1 contains very important log control file infos, and therefore has a redundant copy named SQLOGCTL.LFH.2 . However, both files always reside in the same directory. An option is needed, to configure a second directory/path, so that bo...
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