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sequences

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engdict

engdict

Programmer
Jan 8, 2003
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Hi,

The default size of the block of sequences held in the cache is 20. Does any anyone know if this is 20 *bytes*?
Or 20 *integers*? (Or is it the same thing?

TIA
 
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One of the reasons sequence numbers are efficient is that the numbers are cached in ORACLE shared memory area: the SGA. By default, 20 sequence numbers are cached. Once the 20 numbers are allocated, ORACLE must fetch a further 20 from the database. If sequence numbers are being allocated at a very high rate, you can improve the performance by increasing the cache size when you create the sequence:

Lindsay
 
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