Volume Dataset Activity
This panel shows activity information for all data sets that have incurred I/O activities to a single volume. Use this information to analyze I/O activity for a single volume from a DB2 database/spacename perspective.
________________ ZOJV3 VTM O2 V540.#P SE12 11/06/13 10:27:33 2
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> OBJECT ANALYSIS: Enter a selection letter on the top line.
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> *-VOLUME DS ACTIVITY C-THREAD ACTIVITY
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> VOLUME DATASET ACTIVITY
OJV3
+ Interval Time = 00:05:00 Interval Elapsed = 00:02:49
+ Volume/Unit = PMOSDB/4C2F Total I/O Rate/sec = .0
+ Device Type = 3390 DB2 I/O Rate/sec = .0
+
+ Database = DSN00212 Spacename = FOO
+ *
+ Vol -------I/O Rates------ --------I/O Counts-------
+ DSN Exts Use % Total Read Write Total Read Write
+ --- ---- ------ ------ ------ ------ ------- ------- -------
+ 001 1 100.0% .0 .0 .0 2 1 1
===============================================================================If you move the cursor to any entry in a column and press F10, OMEGAMON® XE for Db2 PE will sort on that column.
Navigation
For additional
information about
- a particular data set, move the cursor to the DSN line and press F11 (Zoom). For more information, see the description of panel Volume Dataset/Extent Activity.
- related topics, select one of the options at the top of the panel.
- other topics, use the PF keys.
Fields
- Interval Time
- The collection interval currently in use by the object analysis collector. At the end of this time interval, the collector resets its collection statistics.
- Interval Elapsed
- The elapsed time within the current collection interval. It is the period of time for which the displayed information is applicable.
- Volume/Unit
- The name and address of the volume.
- Total I/O Rate/sec
- The total number of I/Os per second for the volume. This value is from an MVS perspective. If the volume is shared by multiple MVS systems, this value might not reflect all I/O activity to the volume.
- Device Type
- The device type of the volume displayed.
- Db2 I/O Rate/sec
- The total number of I/Os per second (for the volume) originating from the Db2 subsystem being monitored. This is a subset of total I/Os per second if I/O to the volume is also occurring from address spaces other than the DB2 subsystem being monitored.
- Database
- The name of the selected database.
- Spacename
- The name of the selected space.
- DSN
- The number of a data set that incurred I/O activity.
- Exts
- The number of allocated extents that have incurred I/O activity since the beginning of the collection interval.
- Vol Use %
- The percentage of Db2 I/O activity to the volume that is attributable to the spacename. This ratio is computed by dividing the total I/O rate for the database/spacename by the total spacename I/O rate to the volume.
- Total I/O Rate
- The total I/O rate (per second) that is attributable to the space for the time elapsed.
- Read I/O Rate
- The Read I/O rate (per second) that is attributable to the space for the time elapsed.
- Write I/O Rate
- The Write I/O rate (per second) that is attributable to the space for the time elapsed.
- Total I/O Count
- The total I/O count that is attributable to the space for the time elapsed.
- Read I/O Count
- The number of reads that are attributable to the space for the time elapsed.
- Write I/O Count
- The number of writes that are attributable to the space for the time elapsed.