Manually install DB2 on Linux

Manually install DB2 on Linux

 

1.Run the. /db2_install to install the necessary files

 

 

   2.Run as the root user, set up three groups respectively corresponding to three DB2 users: the instance owner,The fenced user, the DAS user, the command is as follows:

 

 

         groupadd -g 999 db2iadm1

         groupadd -g 998 db2fadm1

         groupadd -g 997 db2asgrp

   3.Run as root, the establishment of three DB2 users, and specify the three user directory, generally for/opt, the command is as follows:

 

useradd -u 1004 -g db2iadm1 -m -d /db2home/db2inst1 db2inst1 -p passwd

useradd -u 1003 -g db2fadm1 -m -d /db2home/db2fenc1 db2fenc1 -p passwd

useradd -u 1002 -g db2asgrp -m -d /db2home/dasusr1 dasusr1 -p passwd

 

 

4. Run as root, to three users set password, the command is as follows:

         passwd db2inst1

         passwd db2fenc1

         passwd dasusr1

5. Create a DB2 instance. Using the db2icrt command:

A. run as root

B. Enter the following command:

/ opt/ibmdb2 / V10.1 / instance/db2icrt -u [- a AuthType] FencedID InstNme

Among them:

Instance - AuthType said the type of authentication, the default for the SERVER, other

Types including CLIENT, DCS, SERVER_ENCRYPT, or DCS_ENCRYPT.

- FencedID is the name of the DB2 fenced user.

- InstNme is  the instance name.

Sample is as follows:

/opt/ibm/db2/V10.1/instance/db2icrt  -u db2fenc1 db2inst1

Problems：

DBI1446I  The db2icrt command is running, please wait.


DB2 installation is being initialized.

 The host name "framework" is invalid. Specify a valid host name.

A major error occurred during the execution that caused this program to
terminate prematurely. If the problem persists, contact your technical service
representative.

For more information see the DB2 installation log at "/tmp/db2icrt.log.2110".
DBI1264E  Errors were encountered in running db2icrt. Please
      refer to the installation log file /tmp/db2icrt.log.2110 for more
      information.

Explanation:

All processed and failed operations have been saved into this log file.

User response:

Do not modify this file in any way. This file is for IBM Technical
Support reference.
 

Problem(Abstract)

The "DBI1922N The host name is not valid" can be received when trying to manually create a DB2 instance or via the upgrade wizard

Cause

The /etc/hosts file is not correctly coded.

Resolving the problem

To resolve this issue, you need to make sure that the /etc/hosts file is coded correctly as stated in the installation manual. Information on the hosts file is also available online in the Tivoli Storage Manager Information Center under the Configuring the /etc/hosts file on AIX®, HP-UX, Linux, and Solaris systems section.

Once the hosts has been corrected, it is necessary the run the db2icrt command manually. Specifically:

/opt/tivoli/tsm/db2/instance/db2icrt -a SERVER -u instance_name instance_name

If the db2icrt command indicates the "sqllib" directory already exists, rename the directory and rerun the db2icrt command again.

Once the db2icrt command completes successfully, continue with the manual configuration steps or rerun dsmupgdx if using the graphical upgrade wizard.

 

 1. modify hostname in below file:

/etc/sysconfig/network
/etc/hosts

2. restart service:
service NetworkManager restart
service network restart  

 

 

6. To create a DB2 instance TCP/IP connection

A. Update the/etc/services file, specify the DB2 server to monitor the client requested service name and port

Add the  line to/etc/services

db2c_db2inst1 50001/tcp # DB2 connection service port

 

Among them:

• db2c_db2inst1 is connection service name

• 50001 is the service port

• TCP/IP is protocol TCP

The service name and port number must be in the system is the only one.

B. in the server to update the database manager configuration file:

I. to DB2 instance user login.

Ii. Set the DB2 instance environment( this step can ignore):

INSTHOME/sqllib/the db2profile

Iii. Update the SVCENAME parameter in DBM configuration file. You must specify the service name or port number.

Sample is as follows:

 

     db2 update dbm cfg using SVCENAME db2c_db2inst1

 

You can use the following command to check the SVCENAME:

 

  db2 get dbm cfg | grep SVC

 

C. set the tcpip to DB2COMM registry parameter. With the DB2 instance user, enter the following command:

 

 

db2set DB2COMM=tcpip

D. restart DB2:

db2stop

db2start

 

7. Install license (this step can be ignored if the db2start has no problem)

Must be installed at each of the computers in the DB2 server license, use db2licm command

A. as root or DB2 instance user login.

B. Enter the following command

 

/opt/ibm/db2/V10.1/adm/db2licm -a

 

 

Among them, the filename is the absolute path to the DB2 server license file, this file generally in CD Mount plate/db2 / license directory, if the CD under the mount MNT, command format is as follows:

/opt/ibm/db2/V10.1/adm/db2licm -a /mnt/db2/license/db2ese.lic

 

After the installation, DB2 licenses in the/var/lum nodelock  directory.

 

8. Create the DB2 administration Server (DAS).

A. to have root privileges user login

B. Perform the following command to create the DAS:

 

opt/ibm/db2/V10.1/instance/dascrt -u DASuser

 

Including DASuser is created in the DAS user name of the machine

 

Commonly used commands:

1. create the database

#su - db2inst1

$db2 create database test ---- Create a database instance

DB20000I The CREATE DATABASE command completed successfully.

2.       Connect to the database we just created

#su - db2inst1

$db2

db2 => Connect to test user db2inst1

Enter current password for db2inst1:

Database Connection Information

Database server = DB2/LINUX 9.7.5

SQLauthorization ID = DB2INST1

Local database alias = TEST

db2 =>

3. See the DB2 database maximum number of connections

 

[db2inst1@localhost ~]$ db2 get dbm cfg

 

          Database Manager Configuration

 

     Node type = Database Server with local and remote clients

 

 Database manager configuration release level            = 0x0a00

 

 CPU speed (millisec/instruction)             (CPUSPEED) = 2.834065e-07

 

 Max number of concurrently active databases     (NUMDB) = 8

 Data Links support                          (DATALINKS) = NO

 Federated Database System Support           (FEDERATED) = NO

 Transaction processor monitor name        (TP_MON_NAME) =

 

 Default charge-back account           (DFT_ACCOUNT_STR) =

 

 Java Development Kit installation path       (JDK_PATH) = /opt/IBMJava2-142

 

 Diagnostic error capture level              (DIAGLEVEL) = 3

 Notify Level                              (NOTIFYLEVEL) = 3

 Diagnostic data directory path               (DIAGPATH) = /home/db2inst1/sqllib/db2dump

 

 Default database monitor switches

   Buffer pool                         (DFT_MON_BUFPOOL) = OFF

   Lock                                   (DFT_MON_LOCK) = OFF

   Sort                                   (DFT_MON_SORT) = OFF

   Statement                              (DFT_MON_STMT) = OFF

   Table                                 (DFT_MON_TABLE) = OFF

   Timestamp                         (DFT_MON_TIMESTAMP) = ON

   Unit of work                            (DFT_MON_UOW) = OFF

 Monitor health of instance and databases   (HEALTH_MON) = ON

 

 SYSADM group name                        (SYSADM_GROUP) = DB2IADM1

 SYSCTRL group name                      (SYSCTRL_GROUP) =

 SYSMAINT group name                    (SYSMAINT_GROUP) =

 SYSMON group name                        (SYSMON_GROUP) =

 

 Client Userid-Password Plugin          (CLNT_PW_PLUGIN) =

 Client Kerberos Plugin                (CLNT_KRB_PLUGIN) =

 Group Plugin                             (GROUP_PLUGIN) =

 GSS Plugin for Local Authorization    (LOCAL_GSSPLUGIN) =

 Server Plugin Mode                    (SRV_PLUGIN_MODE) = UNFENCED

 Server List of GSS Plugins      (SRVCON_GSSPLUGIN_LIST) =

 Server Userid-Password Plugin        (SRVCON_PW_PLUGIN) =

 Server Connection Authentication          (SRVCON_AUTH) = NOT_SPECIFIED

 Database manager authentication        (AUTHENTICATION) = SERVER

 Cataloging allowed without authority   (CATALOG_NOAUTH) = NO

 Trust all clients                      (TRUST_ALLCLNTS) = YES

 Trusted client authentication          (TRUST_CLNTAUTH) = CLIENT

 Bypass federated authentication            (FED_NOAUTH) = NO

 

 Default database path                       (DFTDBPATH) = /home/db2inst1

 

 Database monitor heap size (4KB)          (MON_HEAP_SZ) = 90

 Java Virtual Machine heap size (4KB)     (JAVA_HEAP_SZ) = 2048

 Audit buffer size (4KB)                  (AUDIT_BUF_SZ) = 0

 Size of instance shared memory (4KB)  (INSTANCE_MEMORY) = AUTOMATIC

 Backup buffer default size (4KB)            (BACKBUFSZ) = 1024

 Restore buffer default size (4KB)           (RESTBUFSZ) = 1024

 

 Sort heap threshold (4KB)                  (SHEAPTHRES) = 20000

 

 Directory cache support                     (DIR_CACHE) = YES

 

 Application support layer heap size (4KB)   (ASLHEAPSZ) = 15

 Max requester I/O block size (bytes)         (RQRIOBLK) = 32767

 Query heap size (4KB)                   (QUERY_HEAP_SZ) = 1000

 

 Workload impact by throttled utilities(UTIL_IMPACT_LIM) = 10

 

 Priority of agents                           (AGENTPRI) = SYSTEM

 Max number of existing agents               (MAXAGENTS) = 200

 Agent pool size                        (NUM_POOLAGENTS) = 100(calculated)

 Initial number of agents in pool       (NUM_INITAGENTS) = 0

 Max number of coordinating agents     (MAX_COORDAGENTS) = MAXAGENTS

 Max no. of concurrent coordinating agents  (MAXCAGENTS) = MAX_COORDAGENTS

 Max number of client connections      (MAX_CONNECTIONS) = MAX_COORDAGENTS

 

 Keep fenced process                        (KEEPFENCED) = YES

 Number of pooled fenced processes         (FENCED_POOL) = MAX_COORDAGENTS

 Initial number of fenced processes     (NUM_INITFENCED) = 0

 

 Index re-creation time and redo index build  (INDEXREC) = RESTART

 

 Transaction manager database name         (TM_DATABASE) = 1ST_CONN

 Transaction resync interval (sec)     (RESYNC_INTERVAL) = 180

 

 SPM name                                     (SPM_NAME) =

 SPM log size                          (SPM_LOG_FILE_SZ) = 256

 SPM resync agent limit                 (SPM_MAX_RESYNC) = 20

 SPM log path                             (SPM_LOG_PATH) =

 

 TCP/IP Service name                          (SVCENAME) = db2inst1port

 Discovery mode                               (DISCOVER) = SEARCH

 Discover server instance                (DISCOVER_INST) = ENABLE

 

 Maximum query degree of parallelism   (MAX_QUERYDEGREE) = ANY

 Enable intra-partition parallelism     (INTRA_PARALLEL) = NO

 

 No. of int. communication buffers(4KB)(FCM_NUM_BUFFERS) = 1024

 Number of FCM request blocks              (FCM_NUM_RQB) = AUTOMATIC

 Number of FCM connection entries      (FCM_NUM_CONNECT) = AUTOMATIC

 Number of FCM message anchors         (FCM_NUM_ANCHORS) = AUTOMATIC