Install DB2 v8.2 on CentOS 4/5/6

Linux OS 安裝

OS 安裝選用的套件

• X Window System
• GNOME Desktop
• Editors
• Graphical Internet
• Text-based Internet
• Server Configuration Tools
• Legacy Network Server
  • rusers
  • rwho
• Development Tools
• Compatibility Arch Development
• Legacy Software Development
  • compat-boost-1331
• Administration Tools
• System Tools
• Compatibility Arch Support

必要得套件安裝

• pdksh
• nfs-utils

安裝前的系統參數調整

編輯 /etc/sysctl.conf

fs.file-max = 8192
kernel.shmmax = 1073741824
kernel.shmall = 471859
kernel.msgmni = 4096
kernel.sem = 250 256000 32 2048

TIPs：

kernel.shmax : 32bit 系統的最低需求是 268435456 (256 MB)，而在 64 位元的系統中，則為 1073741824 (1 GB)。
kernel.shmall: physical memory(KB) * 90% / 4, 2048 * 1024 * 90% /4= 471859.2 , 請注意不可小於 Table 所需的 buffer pool的總值.

kernel.shmall: Maximum total size of shared memory in pages (normally 4096 bytes)
kernel.shmmax: Maximum size of shared memory segment in bytes

官網教學：
Modifying kernel parameters and user limits (Linux, AIX, HP-UX, Solaris)
核心參數需求(Linux)

套用設定

#sysctl -p

#ipcs -l

------ Shared Memory Limits --------
max number of segments = 4096          //SHMMNI
max seg size (kbytes) = 1048576        //SHMMAX
max total shared memory (kbytes) = 1887436  //SHMALL
min seg size (bytes) = 1

------ Semaphore Limits --------
max number of arrays = 2048             //SEMMNI
max semaphores per array = 250
max semaphores system wide = 64000
max ops per semop call = 32
semaphore max value = 32767

------ Messages: Limits --------
max queues system wide = 4096             //MSGMNI
max size of message (bytes) = 8192
default max size of queue (bytes) = 16384 //MSGMAX

TIPs:

如何檢查目前運行中系統的這些參數設定值:

cat /proc/sys/kernel/shmall
cat /proc/sys/kernel/shmax

oom-kill 值修改為 0

#echo 0 > /proc/sys/vm/oom-kill

開始安裝 DB2 Server 主程式

在 X Window 環境下安裝)

#tar xzf DB2_V82_ESE_LNX_AMD64_NLV.tar.gz
#cd ese
#db2setup

Install Products
> Installation Type: Typical
> Install DAS

• username: db2as
• group: db2asadm
• Home: /home/db2as

> Set up a DB2 Instance: Do not create a DB2 Instance
> Set up the administration contact list

• Local
• Enable notification: 不要選

NOTE:

出現警告視窗：未指定 SMTP server

選擇 OK 繼續下一步驟

> Finish，開始安裝主程式

TIPs:

沒有 X Window 環境下安裝，可執行 ./db2_install，然後輸入 DB2.ESE

安裝 DB2 FixPak 18

#tar xf FP18_MI00295.tar
#cd FP18_MI00295
#mkdir db2fp18
#tar xf FP18_MI00295.tar -C db2fp18/
#cd db2fp18
#./installFixPak -y

重啟主機

新增 Instance

建立 帳號/群組

#groupadd db2adm
#useradd -g db2adm -c "DB2 Instance User" db2inst

以下可忽略，系統在新增 Instance 時會自動編輯這個檔案。
編輯 /etc/services

# DB2_db2inst      60000/tcp DB2_db2inst_1    60001/tcp DB2_db2inst_2    60002/tcp DB2_db2inst_END  60003/tcp

新增 DB2 Instance

#cd /opt/IBM/db2/V8.1/instance/
#./db2icrt -s ese -u db2inst -w 64 db2inst

TIPs:

64-bit 系統環境必須加上 -w 64，否則會是 32-bit 的 Instance

未授權的訊息

#su - db2inst
#db2licm -l

Product Name                            = "DB2 Enterprise Server Edition"
Product Identifier                      = "DB2ESE"
Version Information                     = "8.2"
Expiry Date                             = "11/06/2013 (Try & Buy)"
Registered Connect User Policy          = "Disabled"
Number Of Entitled Connect Users        = "5"
Enforcement Policy                      = "Soft Stop"
Number of processors                    = "1"
Number of licensed processors           = "1"
Database partitioning feature           = "Entitled"
Annotation                              = ""
Other information

軟體版本

#su - db2inst
#db2level

DB21085I  Instance "db2inst" uses "32" bits and DB2 code release "SQL08029"
with level identifier "030A0106".
Informational tokens are "DB2 v8.1.3.160", "s090715", "MI00295", and FixPak
"18".
Product is installed at "/opt/IBM/db2/V8.1".
註：顯示 "32" bits 表示該 instance 並非 64-bit。

匯入授權檔

#su - db2inst
#db2licm -a db2ese.lic

已授權的訊息

# db2licm -l

Product Name                            = "DB2 Enterprise Server Edition"
Product Identifier                      = "DB2ESE"
Version Information                     = "8.2"
Expiry Date                             = "Permanent"
Registered Connect User Policy          = "Disabled"
Number Of Entitled Connect Users        = "5"
Enforcement Policy                      = "Soft Stop"
Number of processors                    = "1"
Number of licensed processors           = "1"
Database partitioning feature           = "Not entitled"
Annotation                              = ""
Other information                       = ""

DB2 啟動及驗證

# su - db2inst
# db2 "update dbm cfg using svcename DB2_db2inst"
# db2set DB2COMM=tcpip
# db2set DB2CODEPAGE=950
# db2set DB2AUTOSTART=NO
# db2start
# ps -ef | grep db2sysc

TIPs:

第一次啟動 DB2 必須加上 db2set 的一些參數

如果有正常啟動，執行 netstat -lt 檢查，應該要出現  *:DB2_db2inst，如果沒有，在啟動 Instance 前先執行
db2set DB2COMM=tcpip

如果出現這錯誤，將 DB2COMM=tcpip 移除
SQL5043N  Support for one or more communications protocols failed to start successfully. However, core database manager functionality started successfully.

建立資料庫

su - db2inst
mkdir devmmdb/
db2 "create db DEVMMDB on /home/db2inst/devmmdb using codeset big5 territory TW collate using identity"

db2 list db directory
db2 connect to devmmdb 

重要的調整

$> db2 "get db cfg"

 Log file size (4KB)                         (LOGFILSIZ) = 1000
 Number of primary log files                (LOGPRIMARY) = 3
 Number of secondary log files               (LOGSECOND) = 2
 Changed path to log files                  (NEWLOGPATH) =
 Path to log files                                       = /home/devmm/DEVMMDB/devmm/NODE0000/SQL00001/SQLOGDIR
 Block log on disk full                (BLK_LOG_DSK_FUL) = YES

mkdir /home/devmm/DEVMMDB/log
db2 "update db cfg for DEVMMDB using LOGFILSIZ 12800"
db2 "update db cfg for DEVMMDB using LOGPRIMARY 10"
db2 "update db cfg for DEVMMDB using LOGSECOND 10"
db2 "update db cfg for DEVMMDB using NEWLOGPATH /home/devmm/DEVMMDB/log"
db2 "update db cfg for DEVMMDB using BLK_LOG_DSK_FUL YES"