测试环境slse11.2，10.4，RedHat5.3，CentOS5 解压压缩包gavin:/Oracle # tar -xzvf db2exc_975_LNX_x86.tar.gz cd /oracle/spec
测试环境slse11.2，10.4，RedHat5.3，CentOS5
解压压缩包
gavin:/Oracle # tar -xzvf db2exc_975_LNX_x86.tar.gzcd /oracle/special_27924_linuxia32_expc/
图形界面安装
./db2setup
手动安装db
./db2_install [默认路径是/opt/ibm/db2/V9.7]
如需要升级进入到解压后的升级包中执行
./installFixPack -f level -b /opt/ibm/db2/V9.7
注册
/opt/ibm/db2/V9.7/adm/db2licm -a /oracle/special_27924_linuxia32_expc/db2/license/db2ee.lic
db2没有独立的用户管理系统，必须借助OS用户来提供安全认证
建立三个管理的用户组，分别是das管理组，实例组，受防护组
groupadd -g 900 db2agrp
groupadd -g 901 db2igrp
groupadd -g 902 db2fgrp
添加用户
useradd -m -d /home/db2das -g db2agrp -u 803 db2das
useradd -m -d /home/db2inst1 -g db2igrp -u 801 db2inst1
useradd -m -d /home/db2fenc1 -g db2fgrp -u 802 db2fenc1
设置密码
passwd db2inst1
passwd db2fenc1
passwd db2das
查看是否创建成功
cat /etc/passwd | grep db2
cat /etc/group | grep db2
创建实例，需要有一个db2 用户对DB2进行管理
/opt/ibm/db2/V9.7/instance # ./dascrt -u db2das
./db2icrt -a server -u db2inst1 db2inst1
一般实例名字和其管理用户名是一样的
启动db2admin管理器
su - db2das
db2admin start
启动实例
su - db2inst1
db2start
设置对linux上面的数据库自动启动
./db2iauto -on db2inst1
修改db2的服务端口位50001，默认端口是50000
db2 update dbm cfg using SVCENAME 50001
查看实例的配置信息
db2 get dbm cfg
修改数据库的连接方式为TCPIP
db2set DB2COMM=TCPIP
关闭实例
db2stop
What Are the Limitations of Using Views in MySQL?May 14, 2025 am 12:10 AMMySQLviewshavelimitations:1)Theydon'tsupportallSQLoperations,restrictingdatamanipulationthroughviewswithjoinsorsubqueries.2)Theycanimpactperformance,especiallywithcomplexqueriesorlargedatasets.3)Viewsdon'tstoredata,potentiallyleadingtooutdatedinforma
Securing Your MySQL Database: Adding Users and Granting PrivilegesMay 14, 2025 am 12:09 AMProperusermanagementinMySQLiscrucialforenhancingsecurityandensuringefficientdatabaseoperation.1)UseCREATEUSERtoaddusers,specifyingconnectionsourcewith@'localhost'or@'%'.2)GrantspecificprivilegeswithGRANT,usingleastprivilegeprincipletominimizerisks.3)
What Factors Influence the Number of Triggers I Can Use in MySQL?May 14, 2025 am 12:08 AMMySQLdoesn'timposeahardlimitontriggers,butpracticalfactorsdeterminetheireffectiveuse:1)Serverconfigurationimpactstriggermanagement;2)Complextriggersincreasesystemload;3)Largertablesslowtriggerperformance;4)Highconcurrencycancausetriggercontention;5)M
MySQL: Is it safe to store BLOB?May 14, 2025 am 12:07 AMYes,it'ssafetostoreBLOBdatainMySQL,butconsiderthesefactors:1)StorageSpace:BLOBscanconsumesignificantspace,potentiallyincreasingcostsandslowingperformance.2)Performance:LargerrowsizesduetoBLOBsmayslowdownqueries.3)BackupandRecovery:Theseprocessescanbe
MySQL: Adding a user through a PHP web interfaceMay 14, 2025 am 12:04 AMAdding MySQL users through the PHP web interface can use MySQLi extensions. The steps are as follows: 1. Connect to the MySQL database and use the MySQLi extension. 2. Create a user, use the CREATEUSER statement, and use the PASSWORD() function to encrypt the password. 3. Prevent SQL injection and use the mysqli_real_escape_string() function to process user input. 4. Assign permissions to new users and use the GRANT statement.
MySQL: BLOB and other no-sql storage, what are the differences?May 13, 2025 am 12:14 AMMySQL'sBLOBissuitableforstoringbinarydatawithinarelationaldatabase,whileNoSQLoptionslikeMongoDB,Redis,andCassandraofferflexible,scalablesolutionsforunstructureddata.BLOBissimplerbutcanslowdownperformancewithlargedata;NoSQLprovidesbetterscalabilityand
MySQL Add User: Syntax, Options, and Security Best PracticesMay 13, 2025 am 12:12 AMToaddauserinMySQL,use:CREATEUSER'username'@'host'IDENTIFIEDBY'password';Here'showtodoitsecurely:1)Choosethehostcarefullytocontrolaccess.2)SetresourcelimitswithoptionslikeMAX_QUERIES_PER_HOUR.3)Usestrong,uniquepasswords.4)EnforceSSL/TLSconnectionswith
MySQL: How to avoid String Data Types common mistakes?May 13, 2025 am 12:09 AMToavoidcommonmistakeswithstringdatatypesinMySQL,understandstringtypenuances,choosetherighttype,andmanageencodingandcollationsettingseffectively.1)UseCHARforfixed-lengthstrings,VARCHARforvariable-length,andTEXT/BLOBforlargerdata.2)Setcorrectcharacters
Hot AI Tools
Undresser.AI Undress
AI-powered app for creating realistic nude photos
AI Clothes Remover
Online AI tool for removing clothes from photos.
Undress AI Tool
Undress images for free
Clothoff.io
AI clothes remover
Video Face Swap
Swap faces in any video effortlessly with our completely free AI face swap tool!
Hot Article
Hot Tools
SublimeText3 Linux new version
SublimeText3 Linux latest version
SecLists
SecLists is the ultimate security tester's companion. It is a collection of various types of lists that are frequently used during security assessments, all in one place. SecLists helps make security testing more efficient and productive by conveniently providing all the lists a security tester might need. List types include usernames, passwords, URLs, fuzzing payloads, sensitive data patterns, web shells, and more. The tester can simply pull this repository onto a new test machine and he will have access to every type of list he needs.
ZendStudio 13.5.1 Mac
Powerful PHP integrated development environment
DVWA
Damn Vulnerable Web App (DVWA) is a PHP/MySQL web application that is very vulnerable. Its main goals are to be an aid for security professionals to test their skills and tools in a legal environment, to help web developers better understand the process of securing web applications, and to help teachers/students teach/learn in a classroom environment Web application security. The goal of DVWA is to practice some of the most common web vulnerabilities through a simple and straightforward interface, with varying degrees of difficulty. Please note that this software
Notepad++7.3.1
Easy-to-use and free code editor
