Power of MONITOR Opcode

Catch any type of exception in the RPG program by using MONITOR opcode.

We can catch any type of exception in the RPG program by using MONITOR opcode, it is like the MONMSG of CLP. You can put any code between MONITOR and ENDMON opcodes, so that whatever error occurred in this range will be monitored. See the example below:

Example:

Declare an array like Arr with DIM(2)
Declare 3 variables A, B and C with length 2,0. The below code shows how to monitor the runtime errors. The initial value of A and C is 0, initiate value of B is 11.

 
              MONITOR       
B             DIV       A   
Arr(B)        Dsply         
              ON-ERROR  0102
'Div by 0'    Dsply         
              ON-ERROR  0121
'Index Err'   Dsply         
              ON-ERROR      
'Error'       Dsply         
              ENDMON        


==================================
MORE INFORMATION ON THIS TOPIC
==================================

The Best Web Links: tips, tutorials and more.

Ask your programming questions--or help out your peers by answering them--in our live discussion forums.

Ask the Experts yourself: Our application development gurus are waiting to answer your programming questions.


This was first published in January 2003

Dig deeper on iSeries CL programming

0 comments

Oldest 

Forgot Password?

No problem! Submit your e-mail address below. We'll send you an email containing your password.

Your password has been sent to:

SearchEnterpriseLinux

SearchDataCenter

Close