dm8备份与恢复

IT业界
2025-07-21 18:48:01

dm8 备份与恢复基础环境操作系统：Red Hat Enterprise Linux Server release 7.9 (Maipo) 数据库版本：DM Database Server 64 V8 架构：单实例 1 设置bak_path路径 --创建备份文件存放目录 su - dmdba mkdir -p /dm8/backup --修改dm.ini 文件 BAK_PATH = /dm8/backup #backup file path [dmdba@test1 dm8]$ disql sysdba/Dameng123@localhost:5237 服务器[localhost:5237]:处于普通打开状态登录使用时间 : 3.937(ms) disql V8 SQL> select name,value,sys_value,file_value from v$parameter where name='BAK_PATH'; 行号 NAME VALUE SYS_VALUE FILE_VALUE ---------- -------- ------------------ ------------------ ----------- 1 BAK_PATH /dm8/data/PROD/bak /dm8/data/PROD/bak /dm8/backup 已用时间: 4.748(毫秒). 执行号:1000. SQL> exit --重启实例 [root@test1 arch]# systemctl restart DmServiceTEST.service [dmdba@test1 dm8]$ disql sysdba/Dameng123@localhost:5237 服务器[localhost:5237]:处于普通打开状态登录使用时间 : 3.611(ms) disql V8 SQL> select name,value,sys_value,file_value from v$parameter where name='BAK_PATH'; 行号 NAME VALUE SYS_VALUE FILE_VALUE ---------- -------- ----------- ----------- ----------- 1 BAK_PATH /dm8/backup /dm8/backup /dm8/backup 已用时间: 5.328(毫秒). 执行号:500. SQL> 2 全库备份 2.1 文本方式 [dmdba@test1 ~]$ disql sysdba/Dameng123@localhost:5237 服务器[localhost:5237]:处于普通打开状态登录使用时间 : 3.724(ms) disql V8 SQL> backup database full to "20230729_bak" backupset '20230729_bak'; 操作已执行已用时间: 00:00:03.084. 执行号:600. SQL> select backup_name,backup_path from v$backupset; 行号 BACKUP_NAME BACKUP_PATH ---------- ------------ ------------------------ 1 20230729_bak /dm8/backup/20230729_bak 已用时间: 16.554(毫秒). 执行号:601. 2.2 图形界面 [dmdba@test1 ~]$ manager

3 数据文件恢复 3.1 模拟报错模拟报错 2023-07-28 19:04:38.204 [INFO] database P0000074443 T0000000000000074443 hlog_sys_destroy, n_logs[1], adjust_sta[0] 2023-07-28 19:04:38.206 [INFO] database P0000074443 T0000000000000074443 file lsn: 43705 2023-07-28 19:04:38.206 [INFO] database P0000074443 T0000000000000074443 ndct_load_ex_idcls_map load 0 ex_idcls. 2023-07-28 19:04:38.207 [INFO] database P0000074443 T0000000000000074443 ndct db load finished 2023-07-28 19:04:38.211 [ERROR] database P0000074443 T0000000000000074443 os_file_open_low_real error! desc: No such file or directory, path: /dm8/data/PROD/TBS01.dbf, code: 2 2023-07-28 19:04:38.211 [ERROR] database P0000074443 T0000000000000074443 os_file_open_low_real error! desc: No such file or directory, path: /dm8/data/PROD/TBS01.dbf, code: 2 2023-07-28 19:04:38.211 [INFO] database P0000074443 T0000000000000074443 ndct second level fill fast pool finished 2023-07-28 19:04:38.211 [INFO] database P0000074443 T0000000000000074443 ndct third level fill fast pool finished 2023-07-28 19:04:38.227 [INFO] database P0000074443 T0000000000000074443 ndct second level fill fast pool finished 2023-07-28 19:04:38.227 [INFO] database P0000074443 T0000000000000074443 ndct third level fill fast pool finished 2023-07-28 19:04:38.227 [INFO] database P0000074443 T0000000000000074443 ndct fill fast pool finished 2023-07-28 19:04:38.228 [ERROR] database P0000074443 T0000000000000074443 os_file_open_low_real error! desc: No such file or directory, path: /dm8/data/PROD/TBS01.dbf, code: 2 2023-07-28 19:04:38.228 [ERROR] database P0000074443 T0000000000000074443 os_file_open_low_real error! desc: No such file or directory, path: /dm8/data/PROD/TBS01.dbf, code: 2 2023-07-28 19:04:38.229 [INFO] database P0000074443 T0000000000000074443 sess4 aux tsksys init success 2023-07-28 19:04:38.238 [WARNING] database P0000074443 T0000000000000074443 fail to load libgssapi_krb5.so, libgssapi_krb5.so: cannot open shared object file: No such file or directory 2023-07-28 19:04:38.247 [INFO] database P0000074443 T0000000000000074443 nsvr_startup end. 2023-07-28 19:04:38.349 [INFO] database P0000074443 T0000000000000074443 aud sys init success. 2023-07-28 19:04:38.349 [INFO] database P0000074443 T0000000000000074443 aud rt sys init success. 2023-07-28 19:04:38.350 [INFO] database P0000074443 T0000000000000074443 systables desc init success. 2023-07-28 19:04:38.350 [INFO] database P0000074443 T0000000000000074443 ndct_db_load_info success. 2023-07-28 19:04:38.351 [INFO] database P0000074443 T0000000000000074516 nsvr_lsnr_thread successfully created. 2023-07-28 19:04:38.351 [INFO] database P0000074443 T0000000000000074443 backup control file /dm8/data/PROD/dm.ctl to file /dm8/data/PROD/dm_20230728190438_351399.ctl 2023-07-28 19:04:38.353 [INFO] database P0000074443 T0000000000000074443 backup control file /dm8/data/PROD/dm.ctl to file /dm8/data/PROD/ctl_bak/dm_20230728190438_352275.ctl succeed 2023-07-28 19:04:38.353 [INFO] database P0000074443 T0000000000000074443 local instance name is TEST, mode is NORMAL, status is MOUNT. 2023-07-28 19:04:38.353 [INFO] database P0000074443 T0000000000000074443 SYSTEM IS READY. 2023-07-28 19:04:38.353 [INFO] database P0000074443 T0000000000000074443 set g_dw_stat from UNDEFINED to NONE success, g_dw_recover_stop is 0 2023-07-28 19:04:39.351 [INFO] database P0000074443 T0000000000000074479 iid_set_new_next_trxid_if_necessary, next_trxid: 11035 3.2 恢复 3.2.1 文本方式 --关闭实例 [root@test1 arch]# systemctl stop DmServiceTEST.service --恢复 [dmdba@test1 PROD]$ dmrman dmrman V8 RMAN> check backupset '/dm8/backup/20230729_bak'; check backupset '/dm8/backup/20230729_bak'; [Percent:100.00%][Speed:0.00M/s][Cost:00:00:00][Remaining:00:00:00] check backupset successfully. time used: 136.189(ms) RMAN> RESTORE DATABASE '/dm8/data/PROD/dm.ini' tablespace "TBS" FROM BACKUPSET '/dm8/backup/20230729_bak' DEVICE TYPE disk; RESTORE DATABASE '/dm8/data/PROD/dm.ini' tablespace "TBS" FROM BACKUPSET '/dm8/backup/20230729_bak' DEVICE TYPE disk; Database mode = 0, oguid = 0 Normal of FAST Normal of DEFAULT Normal of RECYCLE Normal of KEEP Normal of ROLL begin redo pwr log collect, last ckpt lsn: 43705 ... redo pwr log collect finished EP[0]'s cur_lsn[43705], file_lsn[43705] [Percent:100.00%][Speed:0.00M/s][Cost:00:00:02][Remaining:00:00:00] restore successfully. time used: 00:00:02.418 RMAN> RECOVER DATABASE '/dm8/data/PROD/dm.ini' TABLESPACE TBS WITH ARCHIVEDIR '/dm8/arch'; RECOVER DATABASE '/dm8/data/PROD/dm.ini' TABLESPACE TBS WITH ARCHIVEDIR '/dm8/arch'; Database mode = 0, oguid = 0 Normal of FAST Normal of DEFAULT Normal of RECYCLE Normal of KEEP Normal of ROLL begin redo pwr log collect, last ckpt lsn: 43705 ... redo pwr log collect finished EP[0]'s cur_lsn[43705], file_lsn[43705] [Percent:100.00%][Speed:0.00PKG/s][Cost:00:00:00][Remaining:00:00:00] recover successfully. time used: 428.573(ms) --开启实例 [root@test1 arch]# systemctl start DmServiceTEST.service [dmdba@test1 PROD]$ disql sysdba/Dameng123@localhost:5237 服务器[localhost:5237]:处于普通打开状态登录使用时间 : 3.691(ms) disql V8 SQL> select status$ from v$instance; 行号 STATUS$ ---------- ------- 1 OPEN 已用时间: 1.736(毫秒). 执行号:500. 3.2.2 图形界面 [dmdba@test1 ~]$ console

[dmdba@test1 PROD]$ DmServiceTEST start Starting DmServiceTEST: [ OK ] [dmdba@test1 PROD]$ disql sysdba/Dameng123@localhost:5237 服务器[localhost:5237]:处于普通打开状态登录使用时间 : 3.502(ms) disql V8 SQL> select status$ from v$instance; 行号 STATUS$ ---------- ------- 1 OPEN 已用时间: 9.941(毫秒). 执行号:500. SQL> select file_name from dba_data_files; 行号 FILE_NAME ---------- ------------------------- 1 /dm8/data/PROD/SYSTEM.DBF 2 /dm8/data/PROD/TBS02.dbf 3 /dm8/data/PROD/TBS01.dbf 4 /dm8/data/PROD/MAIN.DBF 5 /dm8/data/PROD/TEMP.DBF 6 /dm8/data/PROD/ROLL.DBF 6 rows got 已用时间: 18.857(毫秒). 执行号:501. SQL> 4 数据库全库恢复 4.1 模拟报错 2023-07-31 05:34:41.856 [INFO] database P0000026050 T0000000000000026050 INI parameter DPC_2PC changed, the original value 1, new value 0 2023-07-31 05:34:41.863 [INFO] database P0000026050 T0000000000000026050 version info: develop 2023-07-31 05:34:41.864 [INFO] database P0000026050 T0000000000000026050 os_sema2_create_low, create and inc sema success, key:151595369, sem_id:65539, sem_value:1! 2023-07-31 05:34:41.864 [ERROR] database P0000026050 T0000000000000026050 /dm8/data/PROD/SYSTEM.DBF not exist [dmdba@test1 PROD]$ DmServiceTEST start Starting DmServiceTEST: [ FAILED ] 4.2 恢复 4.2.1 文本方式 [dmdba@test1 dm8]$ dmrman dmrman V8 RMAN> check backupset '/dm8/backup/20230801_bak'; check backupset '/dm8/backup/20230801_bak'; [Percent:100.00%][Speed:0.00M/s][Cost:00:00:00][Remaining:00:00:00] check backupset successfully. time used: 138.700(ms) RMAN> RESTORE DATABASE '/dm8/data/PROD/dm.ini' FROM BACKUPSET '/dm8/backup/20230801_bak' DEVICE TYPE disk; RESTORE DATABASE '/dm8/data/PROD/dm.ini' FROM BACKUPSET '/dm8/backup/20230801_bak' DEVICE TYPE disk; file dm.key not found, use default license! Normal of FAST Normal of DEFAULT Normal of RECYCLE Normal of KEEP Normal of ROLL [Percent:100.00%][Speed:0.00M/s][Cost:00:00:02][Remaining:00:00:00] restore successfully. time used: 00:00:02.403 RMAN> RECOVER DATABASE '/dm8/data/PROD/dm.ini' WITH ARCHIVEDIR '/dm8/arch'; RECOVER DATABASE '/dm8/data/PROD/dm.ini' WITH ARCHIVEDIR '/dm8/arch'; Database mode = 0, oguid = 0 Normal of FAST Normal of DEFAULT Normal of RECYCLE Normal of KEEP Normal of ROLL EP[0]'s cur_lsn[44962], file_lsn[44962] [Percent:100.00%][Speed:0.00PKG/s][Cost:00:00:00][Remaining:00:00:00] recover successfully! time used: 410.957(ms) RMAN> recover database '/dm8/data/PROD/dm.ini' update db_magic; recover database '/dm8/data/PROD/dm.ini' update db_magic; Database mode = 0, oguid = 0 Normal of FAST Normal of DEFAULT Normal of RECYCLE Normal of KEEP Normal of ROLL EP[0]'s cur_lsn[46614], file_lsn[46614] recover successfully! time used: 00:00:01.001 RMAN> 确认 [dmdba@test1 PROD]$ DmServiceTEST start Starting DmServiceTEST: [ OK ] [dmdba@test1 PROD]$ disql sysdba/Dameng123@localhost:5237 服务器[localhost:5237]:处于普通打开状态登录使用时间 : 3.070(ms) disql V8 SQL> select status$ from v$instance; 行号 STATUS$ ---------- ------- 1 OPEN 已用时间: 1.994(毫秒). 执行号:500. SQL> select file_name from dba_data_files; 行号 FILE_NAME ---------- ------------------------- 1 /dm8/data/PROD/SYSTEM.DBF 2 /dm8/data/PROD/TBS02.dbf 3 /dm8/data/PROD/TBS01.dbf 4 /dm8/data/PROD/MAIN.DBF 5 /dm8/data/PROD/TEMP.DBF 6 /dm8/data/PROD/ROLL.DBF 6 rows got 已用时间: 7.471(毫秒). 执行号:501. SQL> 4.2.2 图形界面 [dmdba@test1 ~]$ console

5.2 恢复 5.2.1 文本方式 [dmdba@test1 arch]$ dmrman dmrman V8 RMAN> restore archive log from backupset '/backup/ARCH_20230806' TO archivedir '/dm/arch' overwrite 2; restore archive log from backupset '/backup/ARCH_20230806' TO archivedir '/dm/arch' overwrite 2; [Percent:100.00%][Speed:0.00M/s][Cost:00:00:00][Remaining:00:00:00] restore successfully. time used: 150.999(ms) 5.2.2 图形界面

[dmdba@test1 tool]$

谨记：心存敬畏，行有所止。

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