How index page logging works

When an index is created, index page logging writes the pages to the logical log for the purpose of synchronizing index creation between servers in high-availability environments.

Index page logging writes the full index to the log file, which is then transmitted asynchronously to the secondary server. The secondary server can be either an RS secondary or an HDR secondary server. The log file transactions are then read into the database on the secondary server. The secondary server is not required to rebuild the index during recovery. For RS secondary servers, the primary server does not wait for an acknowledgment from the secondary server, which allows immediate access to the index on the primary server.

Control index page logging with the ONCONFIG parameter LOG_INDEX_BUILDS. Set the LOG_INDEX_BUILDS parameter to 1 (enabled), to build indexes on the primary server and send them to the secondary server.


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