Mirroring the root dbspace during initialization

If you enable mirroring when you initialize the database server, you can also specify a mirror path name and offset for the root chunk. The database server creates the mirror chunk when the server is initialized. However, because the root chunk contains logical-log files, mirroring does not actually start until you perform a level-0 backup.

To specify the root mirror path name and offset, set the values of MIRRORPATH and MIRROROFFSET in the onconfig file before you start the database server.

If you do not provide a mirror path name and offset, but you do want to start mirroring the root dbspace, you must change the mirroring status of the root dbspace after the database server is initialized.


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