Use the default trace option GTFOPT=PGM,BAL,FOC, which traces LOAD, DELETE, LINK, BALR, BASR, OPEN, and CLOSE operations, to get an overview of what an application is doing and to identify possible starting and ending points for more detailed traces if required.
Here is the trace file for a default trace of an IMS COBOL and Assembler application:
GTF option GTFFILE =D:\MFUSER\CONFIG\GTF.LOG GTF option GTFOPT =BAL,FOC,PGM GTF option GTFIMIN =00000000 GTF option GTFIMAX =FFFFFFFF GTF option GTFAMIN =00000000 GTF option GTFAMAX =FFFFFFFF GTF trace file DATE=000114 TIME=08495898 INS-CTR INS-ADDR INS-OP 00000043 81000188 BALR 05EF 00000044 81005998 BALR 05F0 00000047 810059A2 LINK NAME=AIBTDLI ENTRY=(COBOL) 00000051 810001E6 LOAD NAME=LDDECTBL ENTRY=810059D8 000006DA 8100033A BALR 05EF 00000704 81005998 BALR 05F0 00000707 810059A2 LINK NAME=AIBTDLI ENTRY=(COBOL) 00000762 81000E10 LOAD NAME=CG#CTL ENTRY=80012CF0 00000988 810059B0 BALR 05F0 0000098B 810059BA LINK NAME=ASMTDLI ENTRY=(COBOL) 00001051 8100033A BALR 05EF 0000107B 81005998 BALR 05F0 0000107E 810059A2 LINK NAME=AIBTDLI ENTRY=(COBOL) 000012F7 810059B0 BALR 05F0 000012FA 810059BA LINK NAME=ASMTDLI ENTRY=(COBOL) 00001360 8100033A BALR 05EF 0000139C 81005998 BALR 05F0 0000139F 810059A2 LINK NAME=AIBTDLI ENTRY=(COBOL) 00001618 810059B0 BALR 05F0 0000161B 810059BA LINK NAME=ASMTDLI ENTRY=(COBOL) 00001CDC 8100033A BALR 05EF 00001D06 81005998 BALR 05F0 00001D09 810059A2 LINK NAME=AIBTDLI ENTRY=(COBOL) 00001F82 810059B0 BALR 05F0 00001F85 810059BA LINK NAME=ASMTDLI ENTRY=(COBOL) 00001F92 810003EA DELETE NAME=LDDECTBL ENTRY=00000000 00001FED 81007628 BALR 05EF 00001FEE 8100CE38 BALR 05F0 00001FF1 8100CE42 LINK NAME=AIBTDLI ENTRY=(COBOL) 00001FFB 81007686 LOAD NAME=LDDECTBL ENTRY=80011228 00002684 810077DA BALR 05EF 000026AE 8100CE38 BALR 05F0 000026B1 8100CE42 LINK NAME=AIBTDLI ENTRY=(COBOL) 0000270C 810082B0 LOAD NAME=CG#CTL ENTRY=8100CE78 00002932 8100CE50 BALR 05F0 00002935 8100CE5A LINK NAME=ASMTDLI ENTRY=(COBOL) 00002FFB 810077DA BALR 05EF ......................................... ......................................... 0000B04A 81022160 BALR 05F0 0000B04D 8102216A LINK NAME=ASMTDLI ENTRY=(COBOL) 0000B0AA 8101CAEA BALR 05EF 0000B0EF 81022148 BALR 05F0 0000B0F2 81022152 LINK NAME=AIBTDLI ENTRY=(COBOL) 0000B114 81022160 BALR 05F0 0000B117 8102216A LINK NAME=ASMTDLI ENTRY=(COBOL) 0000B174 8101CAEA BALR 05EF 0000B1B0 81022148 BALR 05F0 0000B1B3 81022152 LINK NAME=AIBTDLI ENTRY=(COBOL) 0000B4A4 81022160 BALR 05F0 0000B4A7 8102216A LINK NAME=ASMTDLI ENTRY=(COBOL) 0000B501 8101CAEA BALR 05EF 0000B519 81022160 BALR 05F0 0000B51C 8102216A LINK NAME=ASMTDLI ENTRY=(COBOL) 0000BBE2 8101CAEA BALR 05EF 0000BC0C 81022148 BALR 05F0 0000BC0F 81022152 LINK NAME=AIBTDLI ENTRY=(COBOL) 0000BE8D 81022160 BALR 05F0 0000BE90 8102216A LINK NAME=ASMTDLI ENTRY=(COBOL) 0000BEED 8101CAEA BALR 05EF 0000BF32 81022148 BALR 05F0 0000BF35 81022152 LINK NAME=AIBTDLI ENTRY=(COBOL) 0000BF51 81022160 BALR 05F0 0000BF54 8102216A LINK NAME=ASMTDLI ENTRY=(COBOL) 0000BFB1 8101CAEA BALR 05EF 0000BFED 81022148 BALR 05F0 0000BFF0 81022152 LINK NAME=AIBTDLI ENTRY=(COBOL) 0000C2E1 81022160 BALR 05F0 0000C2E4 8102216A LINK NAME=ASMTDLI ENTRY=(COBOL) 0000C33E 8101CAEA BALR 05EF 0000C356 81022160 BALR 05F0 0000C359 8102216A LINK NAME=ASMTDLI ENTRY=(COBOL) 0000C3BF 8101CAEA BALR 05EF 0000C3FB 81022148 BALR 05F0 0000C3FE 81022152 LINK NAME=AIBTDLI ENTRY=(COBOL) 0000C67C 81022160 BALR 05F0 0000C67F 8102216A LINK NAME=ASMTDLI ENTRY=(COBOL) 0000CD40 8101CAEA BALR 05EF 0000CD6A 81022148 BALR 05F0 0000CD6D 81022152 LINK NAME=AIBTDLI ENTRY=(COBOL) 0000CFEB 81022160 BALR 05F0 0000CFEE 8102216A LINK NAME=ASMTDLI ENTRY=(COBOL) 0000CFFB 8101CB9A DELETE NAME=LDDECTBL ENTRY=00000000 GTF trace file DATE=000114 TIME=08514748