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Oracle Maestro online help

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Sequences

Sequence is a database object from which multiple users may generate unique integers. You can use sequences to automatically generate primary key values.

 

When a sequence number is generated, the sequence is incremented, independent of the transaction committing or rolling back. If two users concurrently increment the same sequence, then the sequence numbers each user acquires may have gaps, because sequence numbers are being generated by the other user. One user can never acquire the sequence number generated by another user. Once a sequence value is generated by one user, that user can continue to access that value regardless of whether the sequence is incremented by another user.

 

 

 



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