HOW TO FIX THE ERROR: C1LB023E MEMBER = member TOO LARGE OR FRAGMENTED TO STOW FILE=ddname/dsn

Document ID : KB000098064
Last Modified Date : 04/06/2018
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Introduction:
This document gives the solution to fix an error C1LB023E which occurs on ELIB when the named member is either too large or too fragmented to store in the directory pages for this data set.    
Background:
C1LB023E occurs when Either the target library is too fragmented or the named member is too large to store in the available contiguous directory pages for this data set.

A target library is the library that receive an update for an element component during action such as Move, Transfer, Add, etc.

This issue mainly concerns ELIBs that are allocated at the end of the life cycle Map.
I.e. Production DELTA Elibs rather than BASE Elibs could be more impacted,  as the change history will increase during lifetime.

Here are a list of some Relevant factors that can expose to error C1LB023E:
1) Some ELIB's members use lots of PAGEs.
2) There are some very large ELIB, with up to several hundred thousand members.
3) Endevor store elements built from a Computer Aided Software Engineering (CASE) application development environment(1).

(1) 'CASE' are know to build large source code.
Environment:
z/OS
Instructions:
You could reorganize the ELib data set to eliminate space fragmentation, but if the problem recurs, the size of the library must be increased.

CA Support proposes several document that will allow you to resolve the situation.

Here are the steps to resolve the C1LB023E error:

1 - Identify large elements :
Follows guideline from knowledge document :
How to locate a large element in an Endevor Library(ELIB)

2 - Reorganize the Elib:
Follows guideline from knowledge document :
Tips and Techniques for Managing Endevor Elibs
Additional Information:
If you have any questions or concerns please do not hesitate to contact your local CA Endevor Support Team.

For more information on ELIBS please see:
CA Endevor Administrating Guide - Chapter - ELIB Data Sets.
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