Refresh Cursor in Stored proc Oracle

[fahad siddiqui]

I have a stored procedure in which i define a cursor in the start like so:

CURSOR PB_CANCEL_CUR IS SELECT * FROM TB_PB_TRADE_FEED
    WHERE MATCH_ID = 0
    AND ACTION_TYPE = 'C'
    AND ACTIVE_STATUS = 0 
AND ERROR_FLAG ='N' ORDER BY TRADE_REF_NUMBER;

After this, i iterate the loop and upon some conditions, i change the ACTIVE_STATUS and ERROR_FLAG to different values. Upon such an updation, that record should get erased from my cursor.
Hence, after the loop completes, i want to refresh my cursor, so that all such records which i updated during the loop, should now not be present in the cursor anymore.

Please advise urgently. I am using Oracle 8i.
Thanks in advance.