BY the way, you can get an 878 abend from the lack of LSQA if you open a lot of 
datasets or your main program does a GETMAIN for the entire region. If that 
happens to be the case you need to have a region that is SMALLER than your 
actual available region so that you reserve room for your control blocks below 
the line.

-----Original Message-----
From: IBM Mainframe Discussion List [mailto:[email protected]] On Behalf Of 
Lizette Koehler
Sent: Tuesday, March 22, 2011 7:03 AM
To: [email protected]
Subject: Re: DD DUMMY allocate any BUFFERS?

I am not sure about the S878.  However depending on the level of z/OS you are 
running, there is a parm  called CHECKREGIONLOSS which can help alleviate some 
S878 abends.  You may wish to check it out.
You might also rule out the QSAM issue but coding Buffers on the DUMMY 
statement and see if that helps.

And from the JCL Reference Guide

value=0M or 0K A value equal to 0K or 0M -- gives the step all the storage 
available below the 2 GB bar. This includes below and above 16 megabytes.
The resulting size of the region below and above 16 megabytes depends on system 
options and what system software is installed. When REGION=0K/0M is
specified, the MEMLIMIT value is set to NOLIMIT.   Note: This may cause
storage problems. 


Lizette


> 
> I cannot find this information on IBM
> 
> Does DD DUMMY cause any QSAM BUFFERS to be allocated for QSAM files? ie.
> The default value of 5?
> 
> I'm trying to find out why we getting a S878 on a job with REGION=0M 
> on
the jobcard.
> 
> There is several other possible reasons but I want to eliminate or 
> include
this one also.
> 
> 
> David Stewart

----------------------------------------------------------------------
For IBM-MAIN subscribe / signoff / archive access instructions, send email to 
[email protected] with the message: GET IBM-MAIN INFO Search the archives at 
http://bama.ua.edu/archives/ibm-main.html
This e-mail may contain confidential or privileged information. If
you think you have received this e-mail in error, please advise the
sender by reply e-mail and then delete this e-mail immediately.
Thank you. Aetna   

----------------------------------------------------------------------
For IBM-MAIN subscribe / signoff / archive access instructions,
send email to [email protected] with the message: GET IBM-MAIN INFO
Search the archives at http://bama.ua.edu/archives/ibm-main.html

Reply via email to