Datafiles are mistakenly built into the local file system for processing in the RAC environment
The RAC environment has been opened for archiving
1. 本地文件迁移到共享磁盘
1.1 RAC环境中在本地创建数据文件
Node1:vastdata3 SQL> create tablespace asd datafile'/home/oracle/asd01.dbf' size 10M autoextend on; Tablespace created. SQL> col TABLESPACE_NAME for a20 SQL> col FILE_NAME for a50 SQL> select file_name,file_id,online_status,tablespace_name from dba_data_files; FILE_NAME FILE_ID ONLINE_STATUS TABLESPACE_NAME ---------------------- ------ ---- --------- -------------------- +DATA/prod/datafile/undotbs1.258.1001122667 3 ONLINE UNDOTBS1 +DATA/prod/datafile/users.259.1001073567 4 ONLINE USERS +DATA/prod/datafile/sysaux.257.1001073565 2 ONLINE SYSAUX +DATA/prod/datafile/system.256.1001073565 1 SYSTEM SYSTEM +DATA/prod/datafile/example.264.1001073679 5 ONLINE EXAMPLE +DATA/prod/datafile/undotbs2.265.1001073909 6 ONLINE UNDOTBS2 /home/oracle/asd01.dbf 7 ONLINE ASD 7 rows selected.
1.2 在二节点上查看数据字典DBA_DATA_FILES时，发现报错
Node2:vastdata4 SQL> select file_name,file_id,online_status,tablespace_name from dba_data_files; ERROR: ORA-01157: cannot identify/lock data file 7 - see DBWR trace file ORA-01110: data file 7: '/home/oracle/asd01.dbf' no rows selected
1.3 使用RMAN创建数据文件并替换上面提到的数据文件
Node1:vastdata3 SQL> alter database datafile 7 offline; Database altered. RMAN> copy datafile '/home/oracle/asd01.dbf' to '+DATA'; Starting backup at 2019-02-28 03:13:57 using target database control file instead of recovery catalog allocated channel: ORA_DISK_1 channel ORA_DISK_1: SID=51 instance=PROD1 device type=DISK channel ORA_DISK_1: starting datafile copy input datafile file number=00007 name=/home/oracle/asd01.dbf output file name=+DATA/prod/datafile/asd.269.1001387639 tag=TAG20190228T031358 RECID=2 STAMP=1001387638 channel ORA_DISK_1: datafile copy complete, elapsed time: 00:00:01 Finished backup at 2019-02-28 03:13:59 RMAN> switch datafile '/home/oracle/asd01.dbf' to copy; datafile 7 switched to datafile copy "+DATA/prod/datafile/asd.269.1001387639"
1.4 通过复制移动创建的数据文件到ASM磁盘组目录中，恢复7号数据文件并使其online
Recover the datafile 7 And let it online. Node1:vastdata3 SQL> alter database datafile 7 online; alter database datafile 7 online * ERROR at line 1: ORA-01113: file 7 needs media recovery ORA-01110: data file 7: '+DATA/prod/datafile/asd.269.1001387639' SQL> recover datafile 7; Media recovery complete. SQL> alter database datafile 7 online; Database altered. Node1:vastdata3 SQL> select file_name,file_id,online_status,tablespace_name from dba_data_files; FILE_NAME FILE_ID ONLINE_STATUS TABLESPACE_NAME ---------------------- ------ ---- --------- -------------------- +DATA/prod/datafile/undotbs1.258.1001122667 3 ONLINE UNDOTBS1 +DATA/prod/datafile/users.259.1001073567 4 ONLINE USERS +DATA/prod/datafile/sysaux.257.1001073565 2 ONLINE SYSAUX +DATA/prod/datafile/system.256.1001073565 1 SYSTEM SYSTEM +DATA/prod/datafile/example.264.1001073679 5 ONLINE EXAMPLE +DATA/prod/datafile/undotbs2.265.1001073909 6 ONLINE UNDOTBS2 +DATA/prod/datafile/asd.269.1001387639 7 ONLINE ASD 7 rows selected. [oracle@vastdata3 ~]$ rm asd01.dbf Node2:vastdata4 SQL> select file_name,file_id,online_status,tablespace_name from dba_data_files; FILE_NAME FILE_ID ONLINE_STATUS TABLESPACE_NAME ---------------------- ------ ---- --------- -------------------- +DATA/prod/datafile/undotbs1.258.1001122667 3 ONLINE UNDOTBS1 +DATA/prod/datafile/users.259.1001073567 4 ONLINE USERS +DATA/prod/datafile/sysaux.257.1001073565 2 ONLINE SYSAUX +DATA/prod/datafile/system.256.1001073565 1 SYSTEM SYSTEM +DATA/prod/datafile/example.264.1001073679 5 ONLINE EXAMPLE +DATA/prod/datafile/undotbs2.265.1001073909 6 ONLINE UNDOTBS2 +DATA/prod/datafile/asd.269.1001387639 7 ONLINE ASD 7 rows selected.
2. 共享数据文件迁移到本地文件系统中
2.1 在共享磁盘上创建数据文件
Node1:vastdata3 SQL> create tablespace asd datafile'+DATA' size 10M autoextend on; Tablespace created. SQL> select file_name,file_id,online_status,tablespace_name from dba_data_files; FILE_NAME FILE_ID ONLINE_STATUS TABLESPACE_NAME ------------------------------------- ---------- -------------- --- +DATA/prod/datafile/undotbs1.258.1001122667 3 ONLINE UNDOTBS1 +DATA/prod/datafile/users.259.1001073567 4 ONLINE USERS +DATA/prod/datafile/sysaux.257.1001073565 2 ONLINE SYSAUX +DATA/prod/datafile/system.256.1001073565 1 SYSTEM SYSTEM +DATA/prod/datafile/example.264.1001073679 5 ONLINE EXAMPLE +DATA/prod/datafile/undotbs2.265.1001073909 6 ONLINE UNDOTBS2 +DATA/prod/datafile/asd. 269.1001415229 7 ONLINE ASD +DATA/prod/datafile/zxc 8 SYSTEM SYSTEM
2.2 在共享盘中复制数据文件到本地
Node1:vastdata3 SQL> alter database datafile 7 offline; Database altered. ASMCMD> pwd +DATA/PROD/DATAFILE ASMCMD> ls ASD.269.1001415229 ASMCMD> cp ASD.269.1001415229 /tmp/asd01.dbf copying +DATA/PROD/DATAFILE/ASD.269.1001415229 -> /tmp/asd01.dbf
Destinations in cp allow at most one level of directory structure
2.3 变更数据文件到路径，并恢复该数据文件
Node1:vastdata3 SQL> alter database rename file '+DATA/PROD/DATAFILE/ASD.269.1001415229' to '/tmp/asd01.dbf'; Database altered. SQL> select file_name,file_id,online_status,tablespace_name from dba_data_files; FILE_NAME FILE_ID ONLINE_STATUS TABLESPACE_NAME -------------------------------------------------- ---------- -------------- -------------------- +DATA/prod/datafile/undotbs1.258.1001122667 3 ONLINE UNDOTBS1 +DATA/prod/datafile/users.259.1001073567 4 ONLINE USERS +DATA/prod/datafile/sysaux.257.1001073565 2 ONLINE SYSAUX +DATA/prod/datafile/system.256.1001073565 1 SYSTEM SYSTEM +DATA/prod/datafile/example.264.1001073679 5 ONLINE EXAMPLE +DATA/prod/datafile/undotbs2.265.1001073909 6 ONLINE UNDOTBS2 /tmp/asd01.dbf 7 RECOVER ASD +DATA/prod/datafile/zxc 8 SYSTEM SYSTEM 8 rows selected. SQL> recover datafile 7; ORA-00283: recovery session canceled due to errors ORA-01114: IO error writing block to file 7 (block # 1) ORA-01110: data file 7: '/tmp/asd01.dbf' ORA-27091: unable to queue I/O ORA-27041: unable to open file Linux-x86_64 Error: 13: Permission denied Additional information: 3 [root@vastdata3 ~]# ll /tmp/asd01.dbf -rw-r----- 1 grid oinstall 10493952 Feb 28 11:05 /tmp/asd01.dbf [root@vastdata3 ~]# chown oracle:oinstall /tmp/asd01.dbf SQL> recover datafile 7; Media recovery complete. SQL> alter database datafile 7 online; Database altered.
至此，Oracle RAC架构搭建完成。
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