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Index Rebuilds

A couple of days ago I found several referrals coming in from a question about indexing on the Russian Oracle Forum. Reading the thread I found a pointer to a comment I’d written for the Oracle-L list server a couple of years ago about Advanced Queueing and why you might find that it was necessary to rebuild the IOTs (index organized tables) that support AQ.

The queue tables are, of course, a perfect example of what I call the “FIFO” index so it’s not a surprise that they might need special consideration. Rather than rewrite the whole note I’ll just link to it from here. (One of the notes in the rest of the Oracle-L thread also points to MOS document 271855.1 which describes the whys and hows of rebuilding AQ tables.)