DB2 commands are used to execute database administration functions and control the DB2 operational environment. The document discusses different types of DB2 commands, including DSN commands, DB2 commands, IMS commands, and CICS attachment facility commands. It also describes the structure of DB2 commands and the scopes of different commands, such as member, group, or both depending on options.

1. © 2003 IBM Corporation
Introduction to DB2
Utilities
Mmanish kumar
Rajarshi Das / S.N.
Moitra
Santosh Patel
28th June 2017

2. DB2 Command
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DB2 ZOS Commands are user to execute database administration functions. Db2
Supports several different types of commands –
• The DSN commands and its subcommands -
DSN is the DB2 command processor and executes as a
TSO command processor.
• DB2 Commands –
You can use DB2 commands to control most of the
operational environment.
• IMS Commands –
You can use IMS commands to control IMS connections
as well as to start and stop connections to DB2 and
display activity on the connections.
• CICS Attachment facility commands
You can use CICS commands to control CICS
connections as well as to start and stop connections to
DB2 and display activity on the connections.

3. The DSN command and its subcommands
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Environment: All of the DSN subcommands, except SPUFI, run under DSN in
either the foreground or background, and all, except END, also run under DB2
Interactive (DB2I). SPUFI runs only in the foreground under ISPF.
BIND PACKAGE (DSN) The DSN subcommand BIND PACKAGE builds an
application package. DB2 records the description of the
package in the catalog tables and saves the prepared
package in the directory.
BIND PLAN (DSN) The DSN subcommand BIND PLAN builds an application
plan. All DB2 programs require an application plan to
allocate DB2 resources and support SQL requests made at
run time.
DSN (TSO) The TSO command DSN starts a DSN session.
END (DSN) The DSN subcommand END is used to end the DSN
session and return to TSO.

4. DB2 commands
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Environment: The command START DB2 can be issued only from a z/OS
console.
All other DB2 commands can be issued from the following environments:
• A z/OS console or application program
• A DSN session
• A DB2I panel
• An IMS terminal
• A CICS terminal
• An application program, using the DB2 instrumentation facility interface
(IFI)
DB2 commands that are issued from a logged-on z/OS console or TSO
SDSF can
be checked by DB2 authorization using primary and secondary authorization
IDs.

5. DB2 command parsing
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All of the DB2 and related commands have a similar structure that is
necessary to execute valid commands.
The following figure illustrates the pattern of DB2 commands.
-DISPLAY DATABASE(J64DBASE),SPACENAM(PROJ32)
Recognition character - (-)
Command -- DISPLAY
Primary keyword-- DATABASE
Value - J64DBASE
Value -- PROJ32
Keyword - SPACENAM
Separators -- (,)

6. Scope of DB2 and related
commands
All commands have one of the following scopes:
Member or Local
Many commands used in a data sharing environment have member (or
local) scope because they affect only the DB2 subsystem for which they are
issued. For example, a CANCEL THREAD command cancels the specified
threads for the member that is identified by the command prefix.
Group
Other commands have group scope because they affect an object in such a
Way that affects all members of the group. For example, a STOP
DATABASE command issued from any member of the group stops that
database for all members of the group.
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7. Scope of DB2 Commands Cont..-
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The following commands have group scope:
ALTER GROUPBUFFERPOOL (DB2)
BIND PACKAGE (DSN)
BIND PLAN (DSN)
DCLGEN (DSN)
DISPLAY DATABASE (DB2)
DISPLAY GROUP (DB2)
DISPLAY GROUPBUFFERPOOL (DB2)
FREE PACKAGE (DSN)
FREE PLAN (DSN)
MODIFY irlmproc,DIAG (z/OS IRLM)
REBIND PACKAGE (DSN)
REBIND PLAN (DSN)
REBIND TRIGGER PACKAGE (DSN)
START DATABASE (DB2)
STOP DATABASE (DB2)

8. © 2003 IBM Corporation
The following commands have either group or member scope, depending on
which options you specify with them:
ARCHIVE LOG (DB2)
DISPLAY FUNCTION SPECIFIC (DB2)
DISPLAY PROCEDURE (DB2)
DISPLAY THREAD (DB2)
DISPLAY TRACE (DB2)
DISPLAY UTILITY (DB2)
MODIFY irlmproc,SET (z/OS IRLM)
MODIFY irlmproc,STATUS (z/OS IRLM)
START FUNCTION SPECIFIC (DB2)
START PROCEDURE (DB2)
START TRACE (DB2)
STOP FUNCTION SPECIFIC (DB2)
STOP PROCEDURE (DB2)
STOP TRACE (DB2)
TERM UTILITY (DB2)
Scope of DB2 Commands Cont …-

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Login using IBMUSER and SYS1

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How to check – DB2 up and running

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Select DB9G

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These Jobs shows that Db2 is up and running

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How to execute Db2 Commands

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Check for SSID

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SSID should be DB9G

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Change DB8G to DB9G, hit enter twice

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Now SSID would be DB9G

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DB2 Command Line

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This is DB2 Command Line processor

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Access Command

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Normal Completion

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Non group buffer pool dependent MODE(ngbpdep)

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Alter Bufferpool Command

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Successful Completion

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Alter GBP

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Archive Log

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Archive Log offload

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Display Archive

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Display Archive Log

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Display bufferpool

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Display Bufferpool

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Display * will show all inactive BP as well

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Display GBPOOL

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Only valid for Data sharing

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Display Database

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Display a particular database

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Display Claimers Information

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Display Claimers of a Tablespace

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Display DDF ( Distributed Data Facilities )

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Deisplay DDF detailed report

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Display Function Specific

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Display Group

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Display Location

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DISPLAY LOG

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Display Proc

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Display Thread

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Display utility

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Recover INDOUBT thread

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Recover Postponed

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Set Archive

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Set Archive

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Set Log

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Set Log

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Set Sysparm

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Stop Database

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Start Database

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Start Database

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Start Db2

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Start Db2

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Stop Db2

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