IBM Mainframe Forum

Hello,

I want to know what can be the reasons for dynamic allocation routine to fail trying to allocate a dataset on mainframe. Following are some of them I have come up with.

1. Dataset to be allocated already exists.
2. Insufficient space on destination system.

Could there be any other reasons than these.

Regards,
Vinod

I'm not going to think too hard about this, because I'm not sure of your purpose. Security. Syntax. Hardware errors. Storage policy. Site-implemented standards. System-software error. Apllication-software error. Sudden change of wind direction.

Find the Assembler Services Guide manual (http://www.ibm.com if nowhere else) and read chapter 26.3.2 which is titled Interpreting Error Reason Codes from DYNALLOC. You will find several dozen reason codes listed -- such as the first one, insufficient virtual storage, which is not on your list.

Actually, the title is "MVS Programming Authorized Assembler Services Guide." Every once in a while, it can get S0C4 failures due to errors in your parameter list.