Use the following syntax to activate the CTDDIP utility:
// EXEC CTDDIP[,MODE=TEST|PROD[,CHAR=str]][,STAMP=REC|DEC]
// [,REPLIST=Y|N][,PORTION=n]
//DAINP DD DSN=input_stream_data_set_name
CTDDIP – Delete Pages from CDAM Files and Delete Index Values from Index Files and DB2 Global Indexes Database