Trace file size limitation XCOM for Non-stop/Tandem 11.0

Products

• XCOM Data Transport

Issue/Introduction

XCOM trace files on the Tandem are created as Format 1 files. A Format 1 file cannot exceed the 2GB minus 1MB size, whereas a Format 2 can exceed the 2GB minus 1MB size limit. How do we create a Format 2 trace file?

Environment

XCOM™ Data Transport® for Non-Stop(Tandem) 11.0

Resolution

Here are several ways to address the problem:

1. Purge all current XCOM logs and traces
2. Set the following XCOMCNF parameters:
   1.        RTRACEFILE=$vol.subvol.XCOMTRC
   2.        TRACE=9
   3.        XLOG_FILE_TYPE=ENTRYSEQ
3.  Create a Format 2 Entrysequence trace file.

 Example on how to do that:

     FUP /IN MKXCTRC/

      MKXCTRC:
      set type e
      set code 0
      set format 2
      set ext (50,20)
      set rec 256
      set block 4096
      show
      create xcomtrc

Additional Information

You will find additional information about FUP in the following link:

File Utility Program (FUP) Reference Manual

FUP DUP oldfile, newfile [EXT (pri-extent-size, sec-extent-size )] [SAVEALL]

NOTE: You cannot use DUP to increase MAXEXTENTS. To alter the MAXEXTENTS of a file, use the FUP ALTER