CLOSE frees the resources associated with an open cursor. After the cursor is closed, no subsequent operations are allowed on it. A cursor should be closed when it is no longer needed.
Every non-holdable open cursor is implicitly closed when a transaction is terminated by COMMIT or ROLLBACK. Holdable cursors are implicitely closed if the transaction that created them aborts via ROLLBACK; if this does not happen, the holdable cursor remains open until an explicit CLOSE is executed, or the client disconnects.
Message returned if the cursor is successfully closed.
Message returned if cursor is not declared or has already been closed.