How to init a very large LXX

Document ID : KB000073532
Last Modified Date : 15/03/2018
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Question:
Is there any special process needed to allocate and initialize a single-extent LXX (Log area) file?
Answer:
CA Datacom does not manage the placement or extent sizing of the LXX when it is initially allocated. In order to have a single extent in the LXX of 500,000 tracks, it is necessary to pre-allocate this as desired, preferably using the DSNTYPE=LARGE option.

Once the file is allocated, run DBUTLTY as usual to INIT the new LXX (assuming the previous LXX has been spilled to the RXX and the MUF has been shut down). Here is a sample input for DBUTLTY to do this:
//SYSIN    DD *                                            
  INIT   AREA=LXX,BLKSIZE=32760,TSN=00000001,VARIABLE=YES  
/*                                                         
Additional Information:
For more information about the DBUTLTY INIT function, please refer to the following documentation:
Version 15.1 : Reference > DBUTLTY Reference > Utility Function Summary > INIT CXX/FXX/IXX/LXX/WXX/Data Area > INIT LXX (Format Log Area)
Version 15.0 : Reference > DBUTLTY Reference > Utility Function Summary > INIT CXX/FXX/IXX/LXX/WXX/Data Area > INIT LXX (Format Log Area)
Version 14.0: DBUTLTY Reference Guide for z/OSINIT CXX/FXX/IXX/LXX/WXX/Data AreaINIT LXX (Format Log Area)

As always, please contact CA Technologies support for CA Datacom if you have further questions.