Explanation
The percentage of space used in the data set is percent.
The installation-specified threshold for space was exceeded. This
threshold is specified as thresh on the SETSYS
MONITOR command. When the specified threshold exceeds, DFSMShsm issues
this attention message.
Note: If a number is concatenated to
the control data set name (such as MCDS2), then the message refers
to a single volume of a multicluster CDS.
The numerator
is the amount of space between the beginning of the data set and the
high-used point in the data set.
The denominator is the total
space in the data set, which is the amount of space between the beginning
and the end of the data set (high-allocated).
Note: If the data
set is defined so it can extend, the total space increases. Thus, DFSMShsm may
issue this message more than once. DFSMShsm issues this message every time
the percent drops below and then reaches the threshold. For this reason, DFSMShsm recommends
that the data set be defined without secondary allocation. If the
VSAM index data set is allowed to fill up and the index cannot extend, DFSMShsm performance
degrades. This message indicates that the CDS must be reorganized
and the size of the VSAM index must be increased.
System action
DFSMShsm processing continues.
Operator response
Notify the system programmer or storage administrator.
Programmer response
Issue a QUERY command specifying the CONTROLDATASETS
parameter to determine additional information about the data set in
question. If you would like to change the current threshold, use the
SETSYS command with the MONITOR parameter to respecify the threshold
at which DFSMShsm should
begin issuing this message.
If the MCDS, BCDS, or OCDS is full
enough to require action, DFSMShsm should be shut down.
Prior
to a DFSMShsm shutdown,
there are some options you can use:
- Delete old or unneeded records, such as old statistics records,
by using the DELETE parameter of the DFSMShsm FIXCDS or REPORT command.
- Run migration cleanup using the SETSYS command with the SECONDARYSPMGMTSTART
parameter and the DEFINE command with the SECONDARYSPMGMTCYCLE parameter.
After DFSMShsm shutdown:
- Reclaim fragmented space by performing an IDCAMS EXPORT and IMPORT
of the data set or by copying the data set out and back using the
IDCAMS REPRO command. If reclaiming fragmented space does not provide
sufficient space, a larger control data set must be allocated for
the VSAM index.