-507 THE CURSOR IDENTIFIED IN THE UPDATE OR DELETE STATEMENT IS NOT OPEN

Explanation
 The application program attempted to execute an
UPDATE or DELETE WHERE CURRENT OF cursor statement at a time when
the specified cursor was not open.

System action
 The statement cannot be processed. No
update or delete was performed.

Programmer response
 Check for a previous SQL return code that
might have closed the cursor. SQLCODES -404, -652, -679,-802, -901,
-904, -909, -910, -911, -913, and -952 may force the cursor to close.
After the cursor is closed, any fetches or close cursor statements
receive SQLCODE -501. Any updates or deletes receive this SQLCODE
-507. Correct the logic of the application program to ensure that
the specified cursor is open at the time the UPDATE or DELETE statement
is executed.

SQLSTATE
 24501