TIOT

The TIOT (TIO) service displays all allocated devices for a specified address space and monitors the usage of data sets by address space.

Syntax

The parameters are defined as follows:

Parameter	Description
asi	address space instance; see Identifying-address-spaces for more information
MAP	displays the data set names associated with each TIOT entry
ACT	displays the active TIOT entries that contain data sets with nonzero EXCP counts The data set names are listed, as is the case with MAP.
ddname	is the name of a DD statement Specifying this parameter displays the data set names associated with the specified DD name.

Note

Within a concatenation, if more than one of the data sets are allocated to a common volume, TIOT attributes all the EXCPs for the data sets sharing that volume to the first data set within the concatenation that is on the current volume.

For data sets sharing a common volume within a concatenation, IBM updates the TCT I/O table only for the first data set in the concatenation that resides on that volume.

Example 1

To display all allocated devices for address space INVENTRY and display the data set name associated with each TIOT entry, type

TIOT INVENTRY MAP

            [1]       [2]      [3]       [4]           [5]
AMTE11I JOB 332 INVENTRY UPDATE1   PRTY 279 PAGE I/O'S 1044
             [6]          [7]           [8]       [9]
AMTE12I DD STEPLIB   UNIT 151 VOLUME SYS001 EXCP   604
AMTE131              DSN SYS3.SYPROG.LOAD                  [10]
AMTE12I              UNIT 250 VOLUME PERF01
AMTE13I              DSN BB.CMC.CMC310.LOAD
AMTE12I              UNIT 250 VOLUME PERF21 EXCP   129
AMTE13I              DSN BB.CMC.CMC310.LINK
AMTE12I DD SYS00002 UNIT 254 VOLUME PUB001
AMTE13I              DSN SYSCTLG.PUB001
AMTE12I DD SYS00003 UNIT 254 VOLUME PUB002 EXCP    15
AMTE13I              DSN SYSCTLG.PUB002

Legend:

JES job ID
name of the specified address space
current stepname for the specified address space
internal dispatching priority for the address space
total page faults requiring a page I/O operation for this address space
DD name
device number
serial number of volume mounted on device
Only the first volume for multi-volume data sets are listed. You can use the DSNAME service to display all of the volumes for a multi-volume data set.
EXCP count for each data set within each DD name
data set name associated with TIOT entry; issued only if you specify MAP, ACT, or ddname

Example 2

To limit output to TIOT entries that have data sets with nonzero EXCP counts, type

TIOT INVENTRY ACT

AMTE11I JOB 332 INVENTRY UPDATE1   PRTY 279 PAGE I/O'S 1044
AMTE12I DD STEPLIB   UNIT 151 VOLUME SYS001 EXCP   604
AMTE13I              DSN SYS3.SYSPROG.LOAD
AMTE12I              UNIT 250 VOLUME PERF21 EXCP   129
AMTE13I              DSN BB.CMC.CMC310.LINK
AMTE12I DD SYS00003 UNIT 254 VOLUME PUB002 EXCP    15
AMTE13I              DSN SYSCTLG.PUB002

Example 3

To limit output to the data set names associated with the DD name STEPLIB, type

TIOT INVENTRY,STEPLIB

AMTE11I JOB 332 INVENTRY UPDATE1   PRTY 279 PAGE I/O'S 1044
AMTE12I DD STEPLIB   UNIT 151 VOLUME SYS001 EXCP   604
AMTE13I              DSN SYS3.SYSPROG.LOAD
AMTE12I              UNIT 250 VOLUME PERF01
AMTE13I              DSN BB.CMC.CMC310.LOAD
AMTE12I              UNIT 250 VOLUME PERF21 EXCP   129
AMTE13I              DSN BB.CMC.CMC310.LINK