102 Converting to DFSMSrmm from ASG-ZARA or AutoMedia
Example 3-18 Modify DFSMSrmm using new PARMLIB options
To turn Problem Determination Aid (PDA) tracing on or off, specify one of the
commands shown in Example 3-19.
Example 3-19 Turn PDA on of off
To manually quiesce DFSMSrmm, specify the command shown in
Example 3-20 Quiesce all DFSMSrmm activities
To refresh DFSMSrmm installation exits and enable any exits that are
currently disabled, specify the command shown in Example 3-21.
Example 3-21 Activate or refresh DFSMSrmm installation exits
F DFRMM,REFRESH EXITS
For more information about these commands, see DFSMSrmm Implementation
and Customization Guide, SC26-7405.
3.1.13 Stopping DFSMSrmm
The DFSMSrmm subsystem must always be activated in your system. In some
recovery situations, you might need to remove DFSMSrmm from your system. In
that case, you must follow the following procedure:
All jobs that are processing and using tapes should be completed. Before
stopping DFSMSrmm, you can stop batch initiators to avoid failing a job that
opens tape data set.
Before stopping DFSMSrmm, you can obtain a list of the number of requests
waiting to be processed and the number of active requests. You use the
command shown in Example 3-22.
Example 3-22 Show all outstanding DFSMSrmm requests
F DFRMM,QUERY ACTIVE
As a result of this command, you will see the messages shown in Figure 3-30.
Chapter 3. Preparing the environment 103
Figure 3-30 Results of F DFRMM,QUERY ACTIVE command
F Identifies the requested DFSMSrmm function. The values
are internal to DFSMSrmm
Requestor_type Identifies the requestor. It can be JOB, STC, or TSU.
Time Lists the time that the request was started
TKN Identifies the request
Total_count Is the number of tasks available to process DFSMSrmm
Active_count Is the number of tasks currently processing
Queued_count Is the number of requests waiting to be processed by
Nowait_count Is the number of requests waiting to be processed by
DFSMSrmm for which the request does not wait for the
results. Includes the count of catalog requests.
Catalog_count Is the number of requests waiting to be processed by
DFSMSrmm to reflect catalog update activity in the
DFSMSrmm control data set
In Figure 3-32 you can see an example output from this command. In this
sample, the only request to DFSMSrmm is the housekeeping processing
executed by the YCJRES1B job.
Figure 3-31 DFSMSrmm MODIFY command output
Optionally, you may need to remove the DFSMSrmm subsystem. Usually, you
do not need to remove it. If you want to allow tape use without DFSMSrmm
recording, then you can use the command shown in Figure 3-23.
Example 3-23 Disable the DFSMSrmm SSI
EDG1113I F=function requestor_type=requestor_name time TKN=token_value
EDG1114I COMMAND COMPLETE, TOTAL TASKS total_count, ACTIVE active_count
EDG1118I queued_count QUEUED REQUESTS, INCLUDING nowait_count NOWAIT
EDG1101I DFSMSrmm MODIFY COMMAND ACCEPTED
EDG1119I CURRENT DFSMSrmm STATUS IS ACTIVE
EDG1113I F=130 JOB=YCJRES1B 22:19:54 TKN=04000033
EDG1114I COMMAND COMPLETE, TOTAL TASKS 10, ACTIVE 1
EDG1118I 0 QUEUED REQUESTS, INCLUDING 0 NOWAIT 0 CATALOG