IBM DB2

ηCMS supports IBM DB2 9.7 or higher

DB2 Installation

IBM DB2 Express-C is a free DBMS powerful enough to support dozens of complex websites on a single ηCMS node. To install and configure DB2 refers to IBM documentation.

Below are steps to install DB2 Express-C v11.1 on Ubuntu Linux

Installing DB2 on Ubuntu

  1. We assume that a host installing DB2 is running x64 Ubuntu 16.x

  2. We use the v11.1_linuxx64_expc.tar.gz distribution kit

  3. Login as root sudo su -:

    apt-get install libstdc++6:i386 libpam0g:i386 \
        libstdc++6 lib32stdc++6 \
        libaio1 gcc ksh numactl

  4. Install a DB2 instance:

    cd ./expc
./db2_install
useradd -m db2inst1 -s /bin/bash
useradd -m db2fenc1
/opt/ibm/db2/V11.1/instance/db2icrt -u db2fenc1 db2inst1

  5. Add yourself to db2inst1 user group:

  6. Set the database instance operation flags required to work with ηCMS:

    sudo su - db2inst1
db2set DB2_COMPATIBILITY_VECTOR=4000
db2stop
db2start

Creating database

  1. In this step, we need to setup the database user. Let it be ncms:

    useradd -m ncms
passwd ncms
# Type in password for `ncms` user to access the database

Creating a new database

Let us set a name of the new database as NCMS and the database user name - ncms

CREATE DATABASE NCMS AUTOMATIC STORAGE YES
                     USING CODESET UTF-8
                     TERRITORY RU
                     COLLATE USING SYSTEM
                     PAGESIZE 16384;
CONNECT TO NCMS;

CREATE BUFFERPOOL BIGPAGEBP IMMEDIATE
       SIZE 4096 AUTOMATIC
       PAGESIZE 32 K;

CREATE SYSTEM TEMPORARY TABLESPACE TEMPSPACE32
       PAGESIZE 32 K
       MANAGED BY AUTOMATIC STORAGE
       BUFFERPOOL BIGPAGEBP;

CREATE SCHEMA NCMS AUTHORIZATION ncms;

GRANT DBADM ON DATABASE TO USER ncms;

ηCMS configuration

It is necessary to setup a correct JDBC driver to work with database. Configuration example:

<mybatis>
    <bindDatasource>true</bindDatasource>
    <config>com/softmotions/ncms/db/mybatis-config.xml</config>
    <propsFile>{home}/.ncmsapp.ds</propsFile>
    <extra-properties>
        JDBC.driver=com.ibm.db2.jcc.DB2Driver
    </extra-properties>
    ...
</mybatis>

Warning

Make sure that the mybatis/extra-properties configuration item contains the JDBC driver for DB2: com.ibm.db2.jcc.DB2Driver

JDBC URL, user name and password are stored in property file, it is placed to ${HOME}/.ncmsapp.ds in the example above:

JDBC.url=jdbc:db2://127.0.0.1:50000/NCMS
JDBC.username=ncms
JDBC.password=xxxxxx