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>19. Removing DB2 Express-C</H1
><P
>Uninstalling DB2 Express-C is a bit more detailed than the installation
process. Unfortunately, at this time, there is no GUI-based uninstaller
utility like there is for installation. Follow the steps below to completely
remove the DB2 Express-C software from your system. Since the database files
are kept in the home directory of the instance user, you can keep the database
files by skipping the removal of the instance owner (the last step).</P
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>Remove the Database Administration Server. Switch to the DAS owner
(dasusr1 by default), either through the <B
CLASS="command"
>su - dasusr1</B
>
command or by logging in to the system directly as the DAS user, and issue
the command <B
CLASS="command"
>db2admin stop</B
>. Then switch to the root
user, and issue the
<B
CLASS="command"
>/opt/ibm/db2/V9.1/instance/dasdrop</B
> command.</P
></LI
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><P
>Remove the DB2 instance(s). Switch to the instance owner
(db2inst1 by default), either through the <B
CLASS="command"
>su - db2inst1</B
>
command or by logging in to the system directly as the instance user, and
issue the command <B
CLASS="command"
>db2stop</B
>. Then, as root, remove the
instance by issuing the <B
CLASS="command"
>/opt/ibm/db2/V9.1/instance/db2idrop
db2_instance</B
> command, where <TT
CLASS="varname"
>db2_instance</TT
>
refers to the actual instance name you want to drop (for example,
/opt/ibm/db2/V9.1/instance/db2idrop db2inst1). If you want to verify which
instances are present on your system, run the
<B
CLASS="command"
>/opt/ibm/db2/V9.1/instance/db2ilist</B
> command.</P
></LI
><LI
><P
>Remove the software installation. As root, run the
<B
CLASS="command"
>/opt/ibm/db2/V9.1/install/db2_deinstall -a</B
> command. This will
remove the installation of DB2 from your system.</P
></LI
><LI
><P
>If no longer need the DB2 database files (which are kept in the home
directory of the instance owner), you can remove the users that were
created during the installation of DB2 Express-C by entering these commands
as root:<TABLE
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>userdel -r db2inst1
userdel -r dasusr1
userdel -r db2fenc1</PRE
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>(If you created different user names during
installation, substitute as necessary.)</P
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