1.关闭数据库服务，迁移数据目录路径 启停集群(方法备用) 启动数据库 启动主库实例:/dm8/bin/DmService_rural_01 start 启动备库实例:/dm8/bin/DmService_rural_02 start 启动主库守护:/dm8/bin/DmWatcherService_rural_01 start 启动备库守护:/dm8/bin/DmWatcherService_rural_02 start 启动主监视器:/dm8/bin/DmMonitorServiceDMMONITOR_rural_P start 启动备监视器:/dm8/bin/DmMonitorServiceDMMONITOR_rural_S start

停止数据库 关闭顺序：监控器、守护、实例 停止备监视器:/dm8/bin/DmMonitorServiceDMMONITOR_rural_S stop 停止主监视器:/dm8/bin/DmMonitorServiceDMMONITOR_rural_P stop 停止备库守护:/dm8/bin/DmWatcherService_rural_02 stop 停止主库守护:/dm8/bin/DmWatcherService_rural_01 stop 停止主库实例:/dm8/bin/DmService_rural_01 stop 停止备库实例:/dm8/bin/DmService_rural_02 stop

2.创建目标目录 mkdir /data2 chown -R dmdba.dinstall /data2 mv /data/dmdata /data2/dmdata

3.修改dm.ini (将涉及的目录都修改) vi /data/dmdata/DAMENG/dm.ini #file location of dm.ctl CTL_PATH = /data2/dmdata/DAMENG/dm.ctl #ctl file path CTL_BAK_PATH = /data2/dmdata/DAMENG/ctl_bak #dm.ctl backup path SYSTEM_PATH = /data2/dmdata/DAMENG #system path CONFIG_PATH = /data2/dmdata/DAMENG #config path TEMP_PATH = /data2/dmdata/DAMENG #temporary file path BAK_PATH = /data2/dmdata/DAMENG/bak #backup file path DFS_PATH = #path of db_file in dfs

4.修改ctl文件 1.将ctl转为txt ./dmctlcvt TYPE=1 SRC=/data2/dmdata/DAMENG/dm.ctl DEST=/data2/dmdata/DAMENG/dmctl.txt 2.批量修改txt中的涉及目录的部分 3.将txt转回ctl ./dmctlcvt TYPE=2 SRC=/data2/dmdata/DAMENG/dmctl.txt DEST=/data2/dmdata/DAMENG/dm.ctl

5.修改服务 1.修改DmServiceXX INI_PATH=“/data2/dm218data/DAMENG/dm.ini” 2.修改数据目录dmwatcher.ini vi /data/dmdata/DAMENG/dmwatcher.ini [GRWC1] INST_INI = /data/dmdata/DAMENG/dm.ini #dm.ini 文件路径

数据库启动，验证主备情况

6.通过dmrman备份，恢复时指定 REUSE DMINI参数，即可自动修改dm.ini中的路径参数 ./dmrman backup database ‘/data/dmdata/damengdb/dm.ini’ backupset ‘/data/dmbak/20251217fullbak’ compressed level 1 parallel 4; check backupset ‘/data/dmbak/20251217fullbak’