2 modes of isolation for form module

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\pard\li720 Specifies whether or not transactions in a session will be serializable. If Isolation Mode has the value Serializable, the end user sees a consistent view of the database for the entire length of the transaction, regardless of updates committed by other users from other sessions. If the end user queries and changes a row, and a second user updates and commits the same row from another session, the first user sees Oracle error (ORA-08177: Cannot serialize access.).\par
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Read committed (default)\par
\pard\fi720 Serialize \par
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\pard\li720 The serialize works in conjunction with the block's locking property set as delayed. The basic idea behind serialize is that the user sees a consistent set of rows throughout the entire runtime session, inspite of any row being changed by another user of different session.\par
This is mainly useful when the application access a very large databases and very few users use the appln so that the chances of users waiting for locked records is less.\par
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