DB2 setting in linux

Install db2 in linux, you can use a GUI mode or cmd mode.

GUI mode always needs a jre.

CMD mode do not need it.

This article will tell mainly about CMD mode install.

1.Run the install.sh to install.

2.Copy license file

    //adm/db2licm -a /mnt/cd/db2/license/db2ese.lic

3.Enable SMS

    /opt/IBM/db2/V8.1/cfg/db2ln

4.Add group:

    groupadd db2iadm1

    groupadd db2fadm1

    groupadd db2usrgp

    

    the first one is for instance user, second one is for fence user, third one is for normal user.

5.Add user:

    useradd -g db2iadm1 -d /home/db2inst1 -m db2inst1

    useradd -g db2fadm1 -d /home/db2fenc1 -m db2fenc1

    the first user is for instance, second one is for fence. The option -d -m is to create its home folder.

6.Create instance

    //instance/db2icrt -a server -u db2fenc1 db2inst1

    that means create a instance using fence user as db2fenc1 instance user as db2inst1

7.Config db2setting

    su db2inst1

    First to switch to instance user to run db2 commands.

    db2set

    For example:

        db2set DB2_EXTENDED_OPTIMIZATION=ON

        db2set DB2_DISABLE_FLUSH_LOG=ON

        db2set AUTOSTART=YES

        db2set DB2_STRIPED_CONTAINERS=ON

        db2set DB2_HASH_JOIN=Y

        db2set DB2COMM=tcpip

        db2set DB2_PARALLEL_IO=*

        db2set DB2CODEPAGE=819

8.Update dbm cfg

    db2 update dbm cfg using SVCENAME db2inst1

    db2 update dbm cfg using INDEXREC ACCESS

    

    Pay attention that the SVCENAME will be the name using in /etc/services

9.Add service port

    echo "db2inst1         50000/tcp">>/etc/services

    You can also edit the /etc/services to add the words.

    Pay attention that the db2inst1 is SVCENAME db2inst1

10.Start db2

    db2start