Home

 

Defining yourself to the network using generic resources

 

This example describes how to use VTAM Generic Resources to have one connection name to connect to the queue-sharing group.

1. SYS1.PARMLIB(APPCPMxx) contains the start-up parameters for APPC. You must add a line to this file to tell APPC where to locate the sideinfo. This line should be of the form:

   SIDEINFO
       DATASET(APPC.APPCSI)
   

2. Add another line to SYS1.PARMLIB(APPCPMxx) to define the local LU name you intend to use for the WebSphere MQ LU 6.2 group listener. The line you add should take the form

   LUADD ACBNAME(mvslu1)
         NOSCHED
         TPDATA(csq.appctp)
         GRNAME(mvsgr)
         

   Specify values for ACBNAME (9), TPDATA and GRNAME(10).

   The NOSCHED parameter tells APPC that our new LU will not be using the LU 6.2 scheduler (ASCH), but has one of its own. TPDATA refers to the Transaction Program data set in which LU 6.2 stores information about transaction programs. Again, WebSphere MQ will not use this, but it is required by the syntax of the LUADD command.

3. Start the APPC subsystem with the command:

   START APPC,SUB=MSTR,APPC=xx

   where xx is the suffix of the PARMLIB member in which you added the LU in step 1.

   If APPC is already running, it can be refreshed with the command:

   SET APPC=xx

   The effect of this is cumulative, that is, APPC will not lose its knowledge of objects already defined to it in this or another PARMLIB member.

4. Add the new LU to a suitable VTAM major node definition. These are typically in SYS1.VTAMLST. The APPL definition will look similar to the sample shown.

           MVSLU APPL  ACBNAME=MVSLU1,     9
                       APPXC=YES,
                       AUTOSES=0,
                       DDRAINL=NALLOW,
                       DLOGMOD=#INTER,    6
                       DMINWML=10,
                       DMINWNR=10,
                       DRESPL=NALLOW,
                       DSESLIM=60,
                       LMDENT=19,
                       MODETAB=MTCICS,
                       PARSESS=YES,
                       VERIFY=NONE,
                       SECACPT=ALREADYV,
                       SRBEXIT=YES
   

5. Activate the major node. This can be done with the command:

   V,NET,ACT,majornode

6. Add entries defining your LU and generic resource name to the CPI-C side information data set. Use the APPC utility program ATBSDFMU to do this. Sample JCL is in thlqual.SCSQPROC(CSQ4SIDE) (where thlqual is the target library high-level qualifier for WebSphere MQ data sets in your installation.)

   The entries you add will look like this:

        SIADD
             DESTNAME(G1)           11
             MODENAME(#INTER)
             TPNAME(MQSERIES
             PARTNER_LU(MVSLU1)     9
        SIADD
             DESTNAME(G2)           12
             MODENAME(#INTER)
             TPNAME(MQSERIES)
             PARTNER_LU(MVSGR)      10 
                     

7. Alter the queue manager object to use the correct distributed queueing parameters using the following command. You must specify the local LU (9) assigned to your queue manager in the LUGROUP attribute of the queue manager.

   ALTER QMGR LUGROUP(MVSLU1)

 

Parent topic:

Establishing an LU 6.2 connection into a queue-sharing group

ic15640_

 

Home