Portal | Manuals | References | Downloads | Info | Programs | JCLs | Mainframe wiki | Quick Ref
IBM Mainframe Computers Forums Index
 
Register
 
IBM Mainframe Computers Forums Index Mainframe: Search IBM Mainframe Forum: FAQ Memberlist Profile Log in to check your private messages Log in
 
what is 40 and 0F in mainframe spool dump

 
Post new topic   Reply to topic    IBMMAINFRAMES.com Support Forums -> ABENDS & Debugging
View previous topic :: :: View next topic  
Author Message
sunny_io

New User


Joined: 11 Jul 2007
Posts: 68
Location: noida

PostPosted: Tue Mar 18, 2008 10:49 pm    Post subject: what is 40 and 0F in mainframe spool dump
Reply with quote

Hello All

can you pls share what does the following dump signify
and how to read it Also.. thanks


F0F04040 404040F0 F0F04040 404040F0
404040F0 F0F04040 404040F0 F0F0F0F0
Back to top
View user's profile Send private message

Craq Giegerich

Senior Member


Joined: 19 May 2007
Posts: 1512
Location: Virginia, USA

PostPosted: Tue Mar 18, 2008 11:12 pm    Post subject:
Reply with quote

x'F0' is a 0 and x'40' is a space
Back to top
View user's profile Send private message
cpuhawg

Active User


Joined: 14 Jun 2006
Posts: 331
Location: Jacksonville, FL

PostPosted: Tue Mar 18, 2008 11:14 pm    Post subject: Reply to: what is 40 and 0F in mainframe spool dump
Reply with quote

F0F04040 404040F0 F0F04040 404040F0
404040F0 F0F04040 404040F0 F0F0F0F0

converts to:

Code:

00     000     0
   000     00000


A 40 is a blank and a F0 is a zero.

There is not enough information to debug a dump.
Back to top
View user's profile Send private message
dick scherrer

Site Director


Joined: 23 Nov 2006
Posts: 19270
Location: Inside the Matrix

PostPosted: Wed Mar 19, 2008 1:28 am    Post subject:
Reply with quote

Hello,

What are you trying to resolve? Do you have an abend or did something run incorrectly?

What you have posted provides no info to work with. It reads as zeros and spaces and as posted does not have any significance.

If you provide proper info, someone here should be able to help.
Back to top
View user's profile Send private message
sunny_io

New User


Joined: 11 Jul 2007
Posts: 68
Location: noida

PostPosted: Thu Mar 20, 2008 9:52 pm    Post subject:
Reply with quote

Hello All

thanks for the replies. I was just trying to understand how to read a dump.
this was the most common thing in there.. "F0" and "40" so i thought of starting with this..

thanks again
Sunny
Back to top
View user's profile Send private message
dick scherrer

Site Director


Joined: 23 Nov 2006
Posts: 19270
Location: Inside the Matrix

PostPosted: Thu Mar 20, 2008 10:39 pm    Post subject:
Reply with quote

Hello,

Quote:
this was the most common thing in there.. "F0" and "40" so i thought of starting with this
A space is the most common alpha value in a process and a zero is the most common number in a process.

Keep in mind that individual bytes in a core dump are nearly meaningless. They only mean something when considered by their address in the dump and the surrounding data (i.e. within a data record or working-storage item), the surrounding executable code, or "control" information used by the run unit (i.e. tgt, pgt, i/o buffers, etc).

If you want to look into a dump, i'd suggest for a first step you might create a small cobol program, put an "eye catcher" at the start of working-storage, define some pic n(x), some pic n(9), and some pic n(9) comp-3 fields with initial "value"s specified, and then force the program to abend so you will have a dump to look at.

In the dump look for the eye catcher and then the fields you defined and you can see how your fields appear in a dump.
Back to top
View user's profile Send private message
View previous topic :: :: View next topic  
Post new topic   Reply to topic    IBMMAINFRAMES.com Support Forums -> ABENDS & Debugging All times are GMT + 6 Hours
Page 1 of 1

 

Search our Forum:

Similar Topics
Topic Author Forum Replies Posted
No new posts Identifying Interfaces in CICS/mainframe Ashishpanpaliya CICS 5 Fri Oct 13, 2017 3:21 pm
This topic is locked: you cannot edit posts or make replies. Rexx to execute spool commands upendrasri CLIST & REXX 5 Wed Oct 04, 2017 6:54 am
This topic is locked: you cannot edit posts or make replies. Rexx to execute spool commands upendrasri CLIST & REXX 47 Fri Sep 29, 2017 1:08 pm
No new posts Spool Extract for Z /os 1.04 version Khadhar Basha CLIST & REXX 3 Thu Sep 28, 2017 3:14 pm
No new posts Mainframe scheduling tool ddhar Compuware & Other Tools 2 Wed Sep 27, 2017 12:48 am

Facebook
Back to Top
 
Job Vacancies | Forum Rules | Bookmarks | Subscriptions | FAQ | Polls | Contact Us