What is meant by isolation level?

This is a key concept for any relational database. Isolation level is the manner in which locks are applied and released during a transaction. For DB@ a 'repeatable read' holds all locks untile the transaction completes or a syncpoint is issued. For transactions using 'cursor stability' the page lock releases are issued as the cursor 'moves', i.e. as the transaction releases addressability to the records.
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burelamanohar

  • Feb 6th, 2007
 

Isolation level means the extent to which the transaction isolates the data is accessed

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