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ZOS Write To Operator, Write To Operator with Reply console messages – delete

   CONTENTS:

Bottom

1. Explanation the problem  WTO (Write To Operator ) and WTOR (Write To Operator with Reply)

2. What to do with WTO/WTOR when overflow limit

               2.1.  Display limits

               2.2. The necessary actions to  prevent  the severe WTO Buffer shortage

3. More information for WTO/WTOR

 

            1. Explanation the problem  WTO (Write To Operator ) and WTOR (Write To Operator with Reply)

Sometimes  the  ZOS console operator message area occur to be  full and the generation  of messages (WTO, WTOR)  from the system  is stopped. The system is not usable  and need urgent system actions.

What happened?

Console operator messages (WTO – Write To Operator) on Master console (d00 – CN=MASTER)  and on alternate console (d01 –  CN=CN022A)  usually  are displayed  OK at the moment they are generated  by the ZOS system without any problem. When you enter  /D CONSOLES  on TSO/ISPF sd.log you will see that current WTO messages is CURR=1 (LIM=3000)   and current WTOR is CURR=1 (LIM=100) which is OK:

IEE889I 10.44.27 CONSOLE DISPLAY 166

MSG: CURR=1    LIM=3000 RPLY:CURR=1    LIM=100  SYS=BC2A      PFK=NONE

CONSOLE/ALT ID  ————— SPECIFICATIONS —————

SYSLOG                  COND=H      AUTH=CMDS         NBUF=0    UD=N

ROUTCDE=ALL

MASTER         01 COND=M      AUTH=MASTER       NBUF=0    UD=Y

0D00                 AREA=Z,A        MFORM=M

BC2A                  DEL=RD   RTME=1/2    RNUM=5    SEG=14    CON=N

USE=FC   LEVEL=ALL             PFKTAB=*DEFAULT

ROUTCDE=ALL

LOGON=OPTIONAL

ALTGRP=MASTGRP

CN022A       02  COND=A      AUTH=ALL          NBUF=0    UD=Y

0D01                  AREA=Z          MFORM=T,J

BC2A                  DEL=RD   RTME=1      RNUM=19   SEG=9     CON=N

USE=FC   LEVEL=ALL             PFKTAB=*DEFAULT

ROUTCDE=ALL

LOGON=OPTIONAL

MONITOR=JOBNAMES

ALTGRP=MASTGRP

If  the  message IEE159E MESSAGE WAITING appears on the console and  CURR=2000 (LIM=3000)  this means that something is happening and  the explanation is:  message is waiting to be displayed, but the message area is full and 2000  message BUFFERS are used.

This message IEE159E appears:

  • If automatic message deletion is not in effect (DEL=N)  in SYS1.PARMLIB(CONSOL00)
  •  If automatic message deletion was in effect (DEL=Y) in SYS1.PARMLIB(CONSOL00) but no messages were marked for  deletion
  • If the screen is full of intervention required (INT REQ) messages or write to operator with reply messages (WTOR)
  • When the console is in hold mode, and has a message waiting (IEE163I MODE= HELD)  – You have to press “enter “ to change the mode  to message:  IEE163I MODE= RD.

 *** Remark: In our bank Mainframe  for  BC2A LPAR this parameter of  SYS1.PARMLIB (CONSOL00)   is:

DEL(RD)    /* ROLL DELETABLE MODE */ ‘ – the messages are displayed rolling and deleted.

If the problem continue to exist  some other messages appear:

IEA405E WTO Buffer shortage  – 80 % full

IEA404A Severe WTO Buffer shortage  – 100 % full  – MLIM of 3000 is reached

IEA652A WTO shortage exhausted   – 80 % full

 

            2. What to do with WTO/WTOR when overflow limit

                                2.1.  Display limits

You have to look  at  SYS1.PARMLIB(CONSOL00) if  the parameters  RLIM(100) buffers for WTOR messages  and MLIM(3000)  buffers for WTO messages  bellow  are OK :

Parameters in SYS1.PARMLIB(CONSOL00)

INIT PFK(NONE) MPF(CI) RLIM(100) MLIM(3000) UEXIT(N) CMDDELIM(“)

CNGRP(1B) APPLID(SMCS&SYSCLONE)     –  WTOR LIMIT OF 100 FOR THIS SYSTEM,  WTO BUFFER LIMIT OF 3000

CONSOLE DEVNUM(D00) ROUTCODE(ALL)

NAME(MASTER)               /* CONSOLE NAME OF MASTER    CONSOLE  */

UD(Y)                             /* CONSOLE RECEIVES UNDELIVERED MSGS  */

LEVEL(ALL)                /* CONSOLE RECEIVES ALL MESSAGES             */

AUTH(MASTER)             /* MASTER COMMAND AUTHORITY            */

RTME(1/2)                        /* SCREEN UPDATE EVERY HALF SECOND */

DEL(RD)                          /* ROLL DELETABLE MODE                   */            

ALTGRP(MASTGRP) /* CONSOLE SWITCH TO GROUP DEFINED

W/MASTR AUTH. ON ALL SYSTEMS  */

LOGON(OPTIONAL)  /* THIS CONSOLE DOES NOT NEED TO BE

LOGGED ON                */

CONSOLE DEVNUM(D01) ROUTCODE(ALL)

NAME(CN02&SYSCLONE)/* CONSOLE NAME  OF ALTERNATE CONSOLE */

AUTH(ALL)                           /* SYS, IO AND CONS AUTHORITIES      */

USE(FC)                                   /* FULL CAPABILITY CONSOLE             */

LEVEL(ALL)                     /* IMMEDIATE ACTION, CRITICAL AND

EVENTUAL ACTION AND INFORMATIONAL */

UD(Y)                                  /* DOES NOT RECEIVE UNDELIVERED MSGS  */

LOGON(OPTIONAL)      /* THIS CONSOLE DOES NOT NEED TO BE

LOGGED ON           */

ALTGRP(MASTGRP)     /* CONSOLE SWITCH TO GROUP DEFINED

W/SYS AUTH. ON ALL SYSTEMS      */

MONITOR(JOBNAMES-T)

CON(N) SEG(20) DEL(RD) RNUM(19) RTME(1) MFORM(J,T) AREA(NONE)

                               2.2. The necessary actions to  prevent  the severe WTO Buffer shortage 

              1/ From TSO/ISPF  – sd.log – /d r,r or /d r,l – to see all WTOR requiring answer – and respond

/D R,R     (only requesting  reply messages)

IEE112I 11.06.43 PENDING REQUESTS 221

RM=1    IM=0     CEM=2     EM=7     RU=0    IR=2    AMRF

ID:R/K     T MESSAGE TEXT

0002 R *0002 EMS0990A BC2ANVAS READY FOR COMMANDS.

/D R,L    (all system  information messages included requiring response messages)

IEE112I 11.08.00 PENDING REQUESTS 223

RM=1    IM=0     CEM=2     EM=7     RU=0    IR=2    AMRF

ID:R/K     T MESSAGE TEXT

0002 R *0002 EMS0990A BC2ANVAS READY FOR COMMANDS.

20 E  IEF234E K 0301,HV0324,PVT,RESDBCK1,DFDSS – RACK=HV0324

18 E  IEF234E K 0300,HV0289,PVT,RESDBCK0,DFDSS – RACK=HV0289

17 E  IEF234E K 0301,HV0324,PVT,RESDBCK1,DFDSS – RACK=HV0324

14 E  IEF234E K 0301,HV0324,PVT,RESDBCK1,DFDSS – RACK=HV0324

12 E  IEF234E K 0300,HV0333,PVT,RESDBCK0,DFDSS – RACK=HV0333

11 E  IEF234E K 0301,HV0289,PVT,RESDBCK1,DFDSS – RACK=HV0289

9 E  IEF234E K 0300,HV0333,PVT,RESDBCK0,DFDSS – RACK=HV0333

7 C *CBR3002E Library LIB1 no longer usable.

6 C *CBR3002E Library LIBVTS no longer usable.

              2/ From master or alternate console enter – PF1 more times to clear  each message on the screen or  MVS control command: k q or k q,r=hc  – to delete all WTO/WTOR  messages /the most effective!!!/

3/ From master or alternate console enter the control command for temporary change of the max limits of WTO and WTOR in this IPL if needed:

K  M[,REF|[,MLIM=nnnn][,RLIM=mmmm]]  –  K  M,MLIM=4000,RLIM=200  –  up nnnn=9999 mmm=9999

If you enter only /K  M  from TSO/ISPF sd.log you will see the current values of all the operands on the K M command (WTO limit MLIM=3000, WTOR limit RLIM=0100 and SYSLOG limit LOGLIM=001000):

/K  M                                                                       

IEE144I K M,AMRF=Y,MLIM=3000,RLIM=0100,UEXIT=N,LOGLIM=001000,ROUTTIME=00

0,RMAX=9999,APPLID=SMCS2A

          3. More information for WTO/WTOR

             For more detail information use the following link:

http://www.mabu.org/ZOSCommands.pdf – for ZOS MVS System Commands

CONTROL Command

Use of  the CONTROL command to control the screen display of MCS and SMCS consoles:

Examples from  the manual ZOS MVS System Commands :

CONTROL Command

Removing Information From the Screen:  Use the CONTROL E command to remove various types of messages from the screen or to cause message numbers to be deleted.

 K  E[,nn ] |,nn,nn |,SEG |,F |,N |,PFK |,D[,L={a|cc|cca|name|name-a}]

The parameters are:

E Messages are to be removed from the screen.

nn The system is to remove a single (nn) message or a range (nn,nn) of deletable messages from the screen. The value of nn must be a decimal number from 01 to 99. The K E,nn command cannot delete messages after line 99 on very large screen sizes. A deletable message is any message that is either a WTOR or a WTO message issued without descriptor code 1, 2, 3, or 11.

Note: Do not use this command to try to remove a range of non-deletable messages; you can remove only one non-deletable message at a time.

SEG Deletable messages in the predefined message segment are to be removed from the screen. A deletable message is any message that is either a WTOR or a WTO message issued with descriptor code 1,2,3, or 11.

F All flagged messages (messages marked with a vertical or horizontal bar in position 3) are to be removed from the screen.

N Removes the numbers preceding the messages displayed on the screen. The messages on the screen were consecutively numbered by the K D command.

D Specifies that a status display is to be deleted.

L=a, cc, cca, name, or name-a For the D operand, specifies where the specified action is to take place. You can specify the display area by area (a), console id (cc), or both (cca); or, you can specify the display area by area (a), console name (name), or both (name-a). When this keyword is not specified, the oldest area on the screen is deleted.

PFK Specifies that the numbers are to be erased from the program function key (PFK) display line. This operand applies only to display consoles that have the PFK function and support the PFK display line (for example, 3277–2); the system issues message IEE158I for all other consoles.

Example 1

To delete the message at line 10, which appears on the screen as follows:

10 IEE334I HALT EOD SUCCESSFUL enter:

K E,10

Example 2

To delete the non-action messages from a segment of messages, enter:

K E,SEG or K E

Example 3

To delete the non-action messages on lines 4-10, enter:

K E,4,10 Example 4

To delete all flagged messages (messages marked with a vertical or horizontal bar in position 3), enter:

K E,F

Note: The CONTROL E command has no effect on extended MCS consoles or on system consoles and is not valid for managing these consoles.

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