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When you specified V for RECFM parameter, LRECL value is largest record in the file plus 4 bytes. These four bytes contain the actual length of each variable length record in the file
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If your requirement is random access to a resultant table
you can achieve by scrollable cursor.
This mode enables random access to rows in a result set, but currently is supported only by IBM DB2 Universal Database.
Scrollable cursors allow random access to a result table. Applications can use a powerful set of SQL to fetch data using a cursor in random order. Scrollable cursors are especially useful for screen-based applications. You can specify that the data in the result table is to remain static, or you can perform the data updates dynamically.
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