Read the Backtrace on the Detailed Breakpoint Screen

Breakpoint Activities › The Detailed Breakpoint Screen › Read the Backtrace on the Detailed Breakpoint Screen

Read the Backtrace on the Detailed Breakpoint Screen

Use the Source Listing Facility Backtrace feature to examine the path your program took during execution, and to help solve logic problems. On the Detailed Breakpoint screen, only one column at-a-time of backtrace entries is available. To access additional backtrace entries, press PF11 or switch to the Source Listing Breakpoint display mode for a more detailed backtrace listing.

The backtrace shows the path of the most recently executed code.

The top left entry was executed first, and the bottom right entry was executed last.
Each line entry is a pair of program locations identifying the first and last statement numbers or offsets for a piece of sequentially executed code.
The decimal value after statement numbers for COBOL code indicates which verb in the statement was executed last. The first verb is given a decimal value of 0, the second 1, and so on.
After each statement number or offset in the right column there is a break in sequential execution, such as a CALL to CICS or a branch to another location in the program. Each break results in a new line entry.
If a program loops through a section of code more than once, the backtrace displays the number of times the loop was executed below the line entry, instead of repeating the execution sequence.
Plus signs indicate offsets; for example, +204.

To return to the breakpoint display, press PF3 or Clear.

The detailed breakpoint PF keys follow.

PF Key	Function
PF1 Help	Initiates the CA InterTest for CICS online help facility.
PF2	Unassigned.
PF3 Source	Displays the Source Listing version of the breakpoint.
PF4	Unassigned.
PF5 Resume	Resumes execution at the next instruction using the amount set on PF10.
PF6 Menu	Displays the Breakpoint Primary Option Menu.
PF7	Unassigned.
PF8	Unassigned.
PF9 1 Instruc	Executes the next machine instruction and then stops.
PF10 001 Verb PF10 001 Stmt PF 10 Registers	For COBOL, executes the next COBOL verb and then stops. For PL/I, executes the next PL/I statement and then stops. For Assembler, toggles registers on and off the screen.
PF11 Backtrace	Displays the column of backtrace available at this breakpoint.
PF12 Status	Displays a monitoring status report for the monitored entry (program, transaction, or terminal) that caused the breakpoint.
PF22 Shift Left	Shifts source code left; COBOL and PL/I programs shift 10 characters at a time; Assembler programs shift to 02, 40, 50, and then 61. If you have only 12 PF keys, use the Margin= field to shift your source code.
PF23 Shift Right	Shifts source code to the right the same amounts as PF22.