catching errors in function

<p>   <br /> hello sql developers,<br /><br /> i have written function in which while executing it may throw error.<br
/>if the error thrown i want rollback the transaction if not i want commit.<br /><br /> how can i achive this task.<br
/><br/> how can catch exception thrown in the function<br /><br /> plz help me<br /><br /><br /> regards<br />
konkodi<br/><br /><br /><a
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