Displaying components and resources

Monitoring components and resources in a data-sharing environment requires the same kinds of procedures as in a non-sharing environment.

The following table lists keywords for the /DISPLAY command that you can use to obtain information about various IMS resources.

Table 1. /DISPLAY command keywords that provide information about IMS resources
Resources /DISPLAY command keywords
Active control regions

ACTIVE REGION
Active jobs

ACTIVE
Programs, transactions, and conversations

CONVERSATION
PROGRAM
PSB
STATUS PROGRAM
STATUS TRANSACTION
SYSID TRANSACTION
TRANSACTION
Databases

DATABASE
AREA
STATUS DATABASE
Terminals, lines, links, and nodes

ACTIVE DC
ASSIGNMENT LINE
ASSIGNMENT LINK
ASSIGNMENT NODE
LINE
LINK
LTERM
MASTER
MSNAME
NODE
PTERM
STATUS LINE
STATUS LINK
STATUS LTERM
STATUS MSNAME
STATUS NODE
STATUS PTERM
External subsystems and connections to external subsystems

CCTL
OASN SUBSYS
SUBSYS
VTAM®

TIMEOVER

For example, you can issue the /DISPLAY DB command after you issue a /START DB command to determine whether the database is started.

The following table lists keywords for the QUERY command that you can use to obtain information about various IMS resources.

Table 2. QUERY command keywords that provide information about IMS resources
Resources QUERY command keywords
Active control regions MEMBER
Members in the IMSplex IMSPLEX
Transactions TRAN
Databases

DB
AREA
Global online change status OLC
Language environment (LE) runtime options LE
Online reorganization (OLR) status OLREORG
RM resource structure STRUCTURE
Runtime resources and descriptors whose definitions have not been exported to the IMSRSC repository since they were created or last updated

DB SHOW(EXPORTNEEDED)
DBDESC SHOW(EXPORTNEEDED)
PGM SHOW(EXPORTNEEDED)
PGMDESC SHOW(EXPORTNEEDED)
RTC SHOW(EXPORTNEEDED)
RTCDESC SHOW(EXPORTNEEDED)
TRAN SHOW(EXPORTNEEDED)
TRANDESC SHOW(EXPORTNEEDED)

For example, you can issue the QUERY DB command after you issue an UPDATE DB START(ACCESS) command to determine whether the database is started.

Related reading:  For detailed information about the /DISPLAY, /START, QUERY, and UPDATE commands, see IMS Version 15.2 Commands, Volume 1: IMS Commands A-M and IMS Version 15.2 Commands, Volume 2: IMS Commands N-V.