Stroed Procedure:Executing succesfully without errors while calling but the output is not being affected - response (1) by dnoeth

The SP is running in ANSI mode and there's no COMMIT within the SP. 
Do you COMMIT after the CALL?
 

CALL db1.DROP_JI('DB1','INDEXNAME');
COMMIT;

And why don't you check in dbc.TablesV for the JI name and TableKind = 'I' instead of using dbc.TableSize?