DB2备份和还原

作者佚名技术来源 Linux系统浏览发布时间 2012-04-30

################################备份前准备################################# ***************************创建存放归档日志和备份的目录******************** [root@yan ~]# su - db2inst1 [db2inst1@yan ~]$ mkdir archivelog [db2inst1@yan ~]$ mkdir log [db2inst1@yan ~]$ mkdir backup ***************************创建测试数据库和测试表*************************** db2 => create db yan db2 => connect to yan db2 => create table test (id int,name varchar(20),password varchar(20)) db2 => insert into test values (1,''zhu'',''yan'') ***************************修改db2参数************************************** db2 => update db cfg for yan using mirrorlogpath /home/db2inst1/archivelog--启用mirror log db2 => update db cfg for yan using userexit on --启用用户出口 db2 => update db cfg for yan using logretain on --启用归档日志 db2 => update db cfg for yan using trackmod on --启用增量备份功能 db2 => backup db yan to /home/db2inst1/backup 这时数据库处于挂起状态,需要对数据库备份一次,否则不能用 Backup successful. The timestamp for this backup image is : 20090807082755 ###############################开始备份和还原################################ ********************************冷备份和还原********************************* db2 => backup db yan to /home/db2inst1/backup Backup successful. The timestamp for this backup image is : 20090807083306 db2 => insert into test values (2,''hui'',''hui'')

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[db2inst1@yan ~]$ cp archivelog/NODE0000/* log --将归档日志拷贝走 db2 => drop db yan --手动删除数据库,模拟灾备 db2 => restore db yan from /home/db2inst1/backup taken at 20090807083306--恢复数据库 DB20000I The RESTORE DATABASE command completed successfully. db2 => rollforward db yan to end of logs and complete overflow log path (/home/db2inst1/log)--前滚日志 Rollforward Status Input database alias = yan Number of nodes have returned status = 1 Node number = 0 Rollforward status = not pending Next log file to be read = Log files processed = S0000000.LOG - S0000000.LOG Last committed transaction = 2009-08-07-12.34.41.000000 UTC DB20000I The ROLLFORWARD command completed successfully. db2 => select *from test --能查出test表中的所有数据 ********************************热备份和还原********************************* db2 => insert into test values (3,''java'',''db'') --插入测试数据 db2 => backup db yan online to /home/db2inst1/backup --热备 Backup successful. The timestamp for this backup image is : 20090807084334 db2 => insert into test values (4,''db2'',''jsp'') --插入测试数据 [db2inst1@yan ~]$ cp -rf archivelog/NODE0000/* log --拷贝日志 db2 => drop db yan --手动删除数据库,模拟灾备 DB20000I The DROP DATABASE command completed successfully. db2 => restore db yan from /home/db2inst1/backup taken at 20090807084334--恢复数据库

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