IDCAMS LASTCC and MAXCC

最新推荐文章于 2022-10-13 15:50:46 发布

原创最新推荐文章于 2022-10-13 15:50:46 发布 · 778 阅读

0 ·

CC 4.0 BY-SA版权

mainframe 同时被 2 个专栏收录

14 篇文章

订阅专栏

JCL

3 篇文章

订阅专栏

本文详细介绍了IBM大型机环境下IDCAMS控制卡中的LASTCC和MAXCC两个条件码的作用与使用方法。LASTCC记录上一条命令的状态码，而MAXCC则保存所有先前命令状态码的最大值。文章通过示例展示了如何设置这两个变量，并解释了它们的有效值范围及其含义。

What’s LASTCC and MAXCC?

They are IDCAMS return codes, (or condition codes); they can only be used in IDCAMS control card.
- LASTCC stores the condition code for the previous command.
- MAXCC stores the maximum code returned by all previous commands.
- Both LASTCC and MAXCC contain zero by default at the start of IDCAMS execution. so the "set MAXCC=8" command in one JCL step will not affect the MAXCC value at the beginning next JCL step.

Take an example:

//TESTIDCC JOB CLASS=A,MSGCLASS=X,MSGLEVEL=(1,1),NOTIFY=&SYSUID
//*-----------------------------------------------------------------
//STEP01   EXEC PGM=IDCAMS
//SYSOUT   DD  SYSOUT=*
//SYSPRINT DD  SYSOUT=*
//SYSUDUMP DD  SYSOUT=*
//SYSIN  DD   *                                                         
  SET MAXCC = 2
/*
//*-----------------------------------------------------------------
//STEP02   EXEC PGM=IDCAMS
//SYSOUT   DD  SYSOUT=*
//SYSPRINT DD  SYSOUT=*
//SYSUDUMP DD  SYSOUT=*
//SYSIN  DD   *                                                         
  IF MAXCC = 2 THEN    -
     ALLOCATE DATASET('<UID>.TEST.DATA.MAXCC') -
         LRECL(80) -
        RECFM(F B) -
        BLKSIZE(800) -
        SPACE(1,1) CYL
/*

In this case <UID>.TEST.DATA.MAXCC will NOT be created.

What’s valid values for LASTCC and MAXCC?

LASTCC and MAXCC can be set to any value between 0-16;, following are typical values:
- 0 : command executed with no errors
- 4 : warning - execution may go successful
- 8 : serious error - execution may fail
- 12 : serious error - execution impossible
- 16 : fatal error - job step terminates

How to change LASTCC and MAXCC value?

IDCAMS command “set MAXCC/LASTCC=value”
- Setting MAXCC has no effect on LASTCC.
- Setting LASTCC changes the value of MAXCC, if LASTCC is set to a value larger than MAXCC.