oracle12c之表级别恢复

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oracle12c之表级别恢复表/表分区级别的恢复存在如下限制： 1.SYS用户下的表/表分区无法进行恢复。 2.SYSTEM/SYSAUX表空间中的表/表分区无法进行恢复。有的文章说带有非空约束的表在用remap参数时无法恢复，12.2亲测是可以的。最后有测试结果。创建表 SQL> sho user con_name USER is "MING" CON_NAME ------------------------------ MINGPDB1 SQL> create table ming as select * from BD_CIC_TRANS_TRACE; Table created. SQL> select count(*) from ming; COUNT(*) ---------- 1694383 SQL> select index_name from user_indexes where table_name='MING'; INDEX_NAME -------------------------------------------------------------------------------- SYS_IL0000027600C00010$$ 该表具有lob字段。创建索引 SQL> create index ming_idx_01 on ming(oid); Index created. RMAN> backup format '/opt/backup/fulldb_%d_%U' database; Starting backup at 10-AUG-18 using channel ORA_DISK_1 channel ORA_DISK_1: starting full datafile backup set channel ORA_DISK_1: specifying datafile(s) in backup set input datafile file number=00014 name=/opt/mingdbdata/data/MINGPDB1/soe01.dbf input datafile file number=00008 name=/opt/mingdbdata/data/MINGPDB1/system01.dbf input datafile file number=00009 name=/opt/mingdbdata/data/MINGPDB1/sysaux01.dbf input datafile file number=00015 name=/opt/mingdbdata/data/MINGPDB1/tbs_ming01.dbf input datafile file number=00016 name=/opt/mingdbdata/data/MINGPDB1/tbs_ming02.dbf input datafile file number=00010 name=/opt/mingdbdata/data/MINGPDB1/undotbs01.dbf input datafile file number=00011 name=/opt/mingdbdata/data/MINGPDB1/tbs_pdbadmin01.dbf channel ORA_DISK_1: starting piece 1 at 10-AUG-18 channel ORA_DISK_1: finished piece 1 at 10-AUG-18 piece handle=/opt/backup/fulldb_MINGDB_3jta78f7_1_1 tag=TAG20180810T142543 comment=NONE channel ORA_DISK_1: backup set complete, elapsed time: 00:01:05 channel ORA_DISK_1: starting full datafile backup set channel ORA_DISK_1: specifying datafile(s) in backup set input datafile file number=00001 name=/opt/mingdbdata/data/MINGDB/datafile/o1_mf_system_fn8w9k88_.dbf input datafile file number=00003 name=/opt/mingdbdata/data/MINGDB/datafile/o1_mf_sysaux_fn8w9tvc_.dbf input datafile file number=00005 name=/opt/mingdbdata/data/MINGDB/datafile/o1_mf_undotbs1_fn8wb0wo_.dbf input datafile file number=00007 name=/opt/mingdbdata/data/MINGDB/datafile/o1_mf_users_fn8wbl6h_.dbf channel ORA_DISK_1: starting piece 1 at 10-AUG-18 channel ORA_DISK_1: finished piece 1 at 10-AUG-18 piece handle=/opt/backup/fulldb_MINGDB_3kta78h9_1_1 tag=TAG20180810T142543 comment=NONE channel ORA_DISK_1: backup set complete, elapsed time: 00:00:15 channel ORA_DISK_1: starting full datafile backup set channel ORA_DISK_1: specifying datafile(s) in backup set input datafile file number=00002 name=/opt/mingdbdata/data/MINGDB/70A2182C94E1412DE053B7D91FAC647A/datafile/o1_mf_system_fn8w9pls_.dbf input datafile file number=00004 name=/opt/mingdbdata/data/MINGDB/70A2182C94E1412DE053B7D91FAC647A/datafile/o1_mf_sysaux_fn8w9yob_.dbf input datafile file number=00006 name=/opt/mingdbdata/data/MINGDB/70A2182C94E1412DE053B7D91FAC647A/datafile/o1_mf_undotbs1_fn8wb2lm_.dbf channel ORA_DISK_1: starting piece 1 at 10-AUG-18 channel ORA_DISK_1: finished piece 1 at 10-AUG-18 piece handle=/opt/backup/fulldb_MINGDB_3lta78ho_1_1 tag=TAG20180810T142543 comment=NONE channel ORA_DISK_1: backup set complete, elapsed time: 00:00:03 Finished backup at 10-AUG-18 Starting Control File and SPFILE Autobackup at 10-AUG-18 piece handle=/opt/app/oracle/product/12.2.0/db_1/dbs/c-2547745710-20180810-03 comment=NONE Finished Control File and SPFILE Autobackup at 10-AUG-18 当前scn SQL> select current_scn from v$database; CURRENT_SCN ----------- 9561483 彻底删除表 SQL> drop table ming purge; Table dropped. SQL> select current_scn from v$database; CURRENT_SCN ----------- 9561633 创建测试数据查看的影响 SQL> create table tag_9561633 as select * from user_objects; Table created. SQL> select count(*) from tag_9561633; COUNT(*) ---------- 36 RMAN> recover table ming.ming OF PLUGGABLE DATABASE MINGPDB1 until scn 9561483 auxiliary destination '/tmp'; Removing automatic instance shutting down automatic instance Oracle instance shut down Automatic instance removed auxiliary instance file /tmp/MINGDB/70B59C073DE92098E053B7D91FACCD7E/datafile/o1_mf_system_fptd9z7b_.dbf deleted auxiliary instance file /tmp/MINGDB/controlfile/o1_mf_fptd9s43_.ctl deleted RMAN-00571: =========================================================== RMAN-00569: =============== ERROR MESSAGE STACK FOLLOWS =============== RMAN-00571: =========================================================== RMAN-03002: failure of recover command at 08/10/2018 14:31:51 RMAN-03015: error occurred in stored script Memory Script ORA-19625: error identifying file /opt/app/oracle/product/12.2.0/db_1/dbs/3eta77vr_1_1 ORA-27037: unable to obtain file status Linux-x86_64 Error: 2: No such file or directory Additional information: 7 RMAN-05122: there is insufficient disk space to perform this table recovery 第一次尝试恢复报错，磁盘空间不够，观察恢复过程，貌似在做全库resotre，剩余空间还剩5G，所以空间不够了。重新挂块100G的盘，换一个空间。 RMAN> recover table ming.ming OF PLUGGABLE DATABASE MINGPDB1 until scn 9561483 auxiliary destination '/u01'; Starting recover at 10-AUG-18 using target database control file instead of recovery catalog allocated channel: ORA_DISK_1 channel ORA_DISK_1: SID=41 device type=DISK RMAN-05026: warning: presuming following set of tablespaces applies to specified point-in-time List of tablespaces expected to have UNDO segments Tablespace SYSTEM Tablespace MINGPDB1:SYSTEM Tablespace UNDOTBS1 Tablespace MINGPDB1:UNDOTBS1 ############################################################################################ 可以看到创建了一个辅助实例，实例名tiEu，跟ps -ef看到的一致 ############################################################################################ Creating automatic instance, with SID='tiEu' initialization parameters used for automatic instance: db_name=MINGDB db_unique_name=tiEu_pitr_MINGPDB1_MINGDB compatible=12.2.0 db_block_size=8192 db_files=8192 diagnostic_dest=/opt/app/oracle _system_trig_enabled=FALSE sga_target=3248M processes=200 db_create_file_dest=/u01 log_archive_dest_1='location=/u01' enable_pluggable_database=true _clone_one_pdb_recovery=true #No auxiliary parameter file used starting up automatic instance MINGDB Oracle instance started Total System Global Area 3405774848 bytes Fixed Size 8798456 bytes Variable Size 687869704 bytes Database Buffers 2701131776 bytes Redo Buffers 7974912 bytes Automatic instance created contents of Memory Script: { # set requested point in time set until scn 9561483; # restore the controlfile restore clone controlfile; # mount the controlfile sql clone 'alter database mount clone database'; # archive current online log sql 'alter system archive log current'; } executing Memory Script executing command: SET until clause Starting restore at 10-AUG-18 allocated channel: ORA_AUX_DISK_1 channel ORA_AUX_DISK_1: SID=4 device type=DISK channel ORA_AUX_DISK_1: starting datafile backup set restore channel ORA_AUX_DISK_1: restoring control file channel ORA_AUX_DISK_1: reading from backup piece /opt/app/oracle/product/12.2.0/db_1/dbs/c-2547745710-20180810-03 channel ORA_AUX_DISK_1: piece handle=/opt/app/oracle/product/12.2.0/db_1/dbs/c-2547745710-20180810-03 tag=TAG20180810T142707 channel ORA_AUX_DISK_1: restored backup piece 1 channel ORA_AUX_DISK_1: restore complete, elapsed time: 00:00:01 output file name=/u01/MINGDB/controlfile/o1_mf_fptg8kpo_.ctl Finished restore at 10-AUG-18 sql statement: alter database mount clone database sql statement: alter system archive log current contents of Memory Script: { # set requested point in time set until scn 9561483; # set destinations for recovery set and auxiliary set datafiles set newname for clone datafile 1 to new; set newname for clone datafile 8 to new; set newname for clone datafile 5 to new; set newname for clone datafile 10 to new; set newname for clone datafile 3 to new; set newname for clone datafile 9 to new; set newname for clone tempfile 1 to new; set newname for clone tempfile 3 to new; # switch all tempfiles switch clone tempfile all; # restore the tablespaces in the recovery set and the auxiliary set restore clone datafile 1, 8, 5, 10, 3, 9; switch clone datafile all; } executing Memory Script executing command: SET until clause executing command: SET NEWNAME executing command: SET NEWNAME executing command: SET NEWNAME executing command: SET NEWNAME executing command: SET NEWNAME executing command: SET NEWNAME executing command: SET NEWNAME executing command: SET NEWNAME renamed tempfile 1 to /u01/MINGDB/datafile/o1_mf_temp_%u_.tmp in control file renamed tempfile 3 to /u01/MINGDB/70B59C073DE92098E053B7D91FACCD7E/datafile/o1_mf_temp_%u_.tmp in control file Starting restore at 10-AUG-18 using channel ORA_AUX_DISK_1 channel ORA_AUX_DISK_1: starting datafile backup set restore channel ORA_AUX_DISK_1: specifying datafile(s) to restore from backup set channel ORA_AUX_DISK_1: restoring datafile 00008 to /u01/MINGDB/70B59C073DE92098E053B7D91FACCD7E/datafile/o1_mf_system_%u_.dbf channel ORA_AUX_DISK_1: restoring datafile 00010 to /u01/MINGDB/70B59C073DE92098E053B7D91FACCD7E/datafile/o1_mf_undotbs1_%u_.dbf channel ORA_AUX_DISK_1: restoring datafile 00009 to /u01/MINGDB/70B59C073DE92098E053B7D91FACCD7E/datafile/o1_mf_sysaux_%u_.dbf channel ORA_AUX_DISK_1: reading from backup piece /opt/backup/fulldb_MINGDB_3jta78f7_1_1 channel ORA_AUX_DISK_1: piece handle=/opt/backup/fulldb_MINGDB_3jta78f7_1_1 tag=TAG20180810T142543 channel ORA_AUX_DISK_1: restored backup piece 1 channel ORA_AUX_DISK_1: restore complete, elapsed time: 00:00:25 channel ORA_AUX_DISK_1: starting datafile backup set restore channel ORA_AUX_DISK_1: specifying datafile(s) to restore from backup set channel ORA_AUX_DISK_1: restoring datafile 00001 to /u01/MINGDB/datafile/o1_mf_system_%u_.dbf channel ORA_AUX_DISK_1: restoring datafile 00005 to /u01/MINGDB/datafile/o1_mf_undotbs1_%u_.dbf channel ORA_AUX_DISK_1: restoring datafile 00003 to /u01/MINGDB/datafile/o1_mf_sysaux_%u_.dbf channel ORA_AUX_DISK_1: reading from backup piece /opt/backup/fulldb_MINGDB_3kta78h9_1_1 channel ORA_AUX_DISK_1: piece handle=/opt/backup/fulldb_MINGDB_3kta78h9_1_1 tag=TAG20180810T142543 channel ORA_AUX_DISK_1: restored backup piece 1 channel ORA_AUX_DISK_1: restore complete, elapsed time: 00:00:25 Finished restore at 10-AUG-18 datafile 1 switched to datafile copy input datafile copy RECID=7 STAMP=983804746 file name=/u01/MINGDB/datafile/o1_mf_system_fptg9k72_.dbf datafile 8 switched to datafile copy input datafile copy RECID=8 STAMP=983804746 file name=/u01/MINGDB/70B59C073DE92098E053B7D91FACCD7E/datafile/o1_mf_system_fptg8qsw_.dbf datafile 5 switched to datafile copy input datafile copy RECID=9 STAMP=983804746 file name=/u01/MINGDB/datafile/o1_mf_undotbs1_fptg9k7h_.dbf datafile 10 switched to datafile copy input datafile copy RECID=10 STAMP=983804746 file name=/u01/MINGDB/70B59C073DE92098E053B7D91FACCD7E/datafile/o1_mf_undotbs1_fptg8qt7_.dbf datafile 3 switched to datafile copy input datafile copy RECID=11 STAMP=983804746 file name=/u01/MINGDB/datafile/o1_mf_sysaux_fptg9k7d_.dbf datafile 9 switched to datafile copy input datafile copy RECID=12 STAMP=983804746 file name=/u01/MINGDB/70B59C073DE92098E053B7D91FACCD7E/datafile/o1_mf_sysaux_fptg8qt2_.dbf contents of Memory Script: { # set requested point in time set until scn 9561483; # online the datafiles restored or switched sql clone "alter database datafile 1 online"; sql clone 'MINGPDB1' "alter database datafile 8 online"; sql clone "alter database datafile 5 online"; sql clone 'MINGPDB1' "alter database datafile 10 online"; sql clone "alter database datafile 3 online"; sql clone 'MINGPDB1' "alter database datafile 9 online"; # recover and open database read only recover clone database tablespace "SYSTEM", "MINGPDB1":"SYSTEM", "UNDOTBS1", "MINGPDB1":"UNDOTBS1", "SYSAUX", "MINGPDB1":"SYSAUX"; sql clone 'alter database open read only'; } executing Memory Script executing command: SET until clause sql statement: alter database datafile 1 online sql statement: alter database datafile 8 online sql statement: alter database datafile 5 online sql statement: alter database datafile 10 online sql statement: alter database datafile 3 online sql statement: alter database datafile 9 online Starting recover at 10-AUG-18 using channel ORA_AUX_DISK_1 starting media recovery archived log for thread 1 with sequence 596 is already on disk as file /opt/mingdbdata/archive/1_596_981132078.arc archived log file name=/opt/mingdbdata/archive/1_596_981132078.arc thread=1 sequence=596 media recovery complete, elapsed time: 00:00:01 Finished recover at 10-AUG-18 sql statement: alter database open read only contents of Memory Script: { sql clone 'alter pluggable database MINGPDB1 open read only'; } executing Memory Script sql statement: alter pluggable database MINGPDB1 open read only contents of Memory Script: { sql clone "create spfile from memory"; shutdown clone immediate; startup clone nomount; sql clone "alter system set control_files = ''/u01/MINGDB/controlfile/o1_mf_fptg8kpo_.ctl'' comment= ''RMAN set'' scope=spfile"; shutdown clone immediate; startup clone nomount; # mount database sql clone 'alter database mount clone database'; } executing Memory Script sql statement: create spfile from memory database closed database dismounted Oracle instance shut down connected to auxiliary database (not started) Oracle instance started Total System Global Area 3405774848 bytes Fixed Size 8798456 bytes Variable Size 687869704 bytes Database Buffers 2701131776 bytes Redo Buffers 7974912 bytes sql statement: alter system set control_files = ''/u01/MINGDB/controlfile/o1_mf_fptg8kpo_.ctl'' comment= ''RMAN set'' scope=spfile Oracle instance shut down connected to auxiliary database (not started) Oracle instance started Total System Global Area 3405774848 bytes Fixed Size 8798456 bytes Variable Size 687869704 bytes Database Buffers 2701131776 bytes Redo Buffers 7974912 bytes sql statement: alter database mount clone database contents of Memory Script: { # set requested point in time set until scn 9561483; # set destinations for recovery set and auxiliary set datafiles set newname for datafile 15 to new; set newname for datafile 16 to new; # restore the tablespaces in the recovery set and the auxiliary set restore clone datafile 15, 16; switch clone datafile all; } executing Memory Script executing command: SET until clause executing command: SET NEWNAME executing command: SET NEWNAME Starting restore at 10-AUG-18 allocated channel: ORA_AUX_DISK_1 channel ORA_AUX_DISK_1: SID=180 device type=DISK channel ORA_AUX_DISK_1: starting datafile backup set restore channel ORA_AUX_DISK_1: specifying datafile(s) to restore from backup set channel ORA_AUX_DISK_1: restoring datafile 00015 to /u01/TIEU_PITR_MINGPDB1_MINGDB/70B59C073DE92098E053B7D91FACCD7E/datafile/o1_mf_tbs_ming_%u_.dbf channel ORA_AUX_DISK_1: restoring datafile 00016 to /u01/TIEU_PITR_MINGPDB1_MINGDB/70B59C073DE92098E053B7D91FACCD7E/datafile/o1_mf_tbs_ming_%u_.dbf channel ORA_AUX_DISK_1: reading from backup piece /opt/backup/fulldb_MINGDB_3jta78f7_1_1 channel ORA_AUX_DISK_1: piece handle=/opt/backup/fulldb_MINGDB_3jta78f7_1_1 tag=TAG20180810T142543 channel ORA_AUX_DISK_1: restored backup piece 1 channel ORA_AUX_DISK_1: restore complete, elapsed time: 00:00:35 Finished restore at 10-AUG-18 datafile 15 switched to datafile copy input datafile copy RECID=15 STAMP=983804838 file name=/u01/TIEU_PITR_MINGPDB1_MINGDB/70B59C073DE92098E053B7D91FACCD7E/datafile/o1_mf_tbs_ming_fptgd389_.dbf datafile 16 switched to datafile copy input datafile copy RECID=16 STAMP=983804838 file name=/u01/TIEU_PITR_MINGPDB1_MINGDB/70B59C073DE92098E053B7D91FACCD7E/datafile/o1_mf_tbs_ming_fptgd38x_.dbf contents of Memory Script: { # set requested point in time set until scn 9561483; # online the datafiles restored or switched sql clone 'MINGPDB1' "alter database datafile 15 online"; sql clone 'MINGPDB1' "alter database datafile 16 online"; # recover and open resetlogs recover clone database tablespace "MINGPDB1":"TBS_MING", "SYSTEM", "MINGPDB1":"SYSTEM", "UNDOTBS1", "MINGPDB1":"UNDOTBS1", "SYSAUX", "MINGPDB1":"SYSAUX" delete archivelog; alter clone database open resetlogs; } executing Memory Script executing command: SET until clause sql statement: alter database datafile 15 online sql statement: alter database datafile 16 online Starting recover at 10-AUG-18 using channel ORA_AUX_DISK_1 starting media recovery archived log for thread 1 with sequence 596 is already on disk as file /opt/mingdbdata/archive/1_596_981132078.arc archived log file name=/opt/mingdbdata/archive/1_596_981132078.arc thread=1 sequence=596 media recovery complete, elapsed time: 00:00:00 Finished recover at 10-AUG-18 database opened contents of Memory Script: { sql clone 'alter pluggable database MINGPDB1 open'; } executing Memory Script sql statement: alter pluggable database MINGPDB1 open contents of Memory Script: { # create directory for datapump import sql 'MINGPDB1' "create or replace directory TSPITR_DIROBJ_DPDIR as '' /u01''"; # create directory for datapump export sql clone 'MINGPDB1' "create or replace directory TSPITR_DIROBJ_DPDIR as '' /u01''"; } executing Memory Script sql statement: create or replace directory TSPITR_DIROBJ_DPDIR as ''/u01'' sql statement: create or replace directory TSPITR_DIROBJ_DPDIR as ''/u01'' Performing export of tables... EXPDP> Starting "SYS"."TSPITR_EXP_tiEu_fDbD": EXPDP> Processing object type TABLE_EXPORT/TABLE/TABLE_DATA EXPDP> Processing object type TABLE_EXPORT/TABLE/INDEX/STATISTICS/INDEX_STATISTICS EXPDP> Processing object type TABLE_EXPORT/TABLE/STATISTICS/TABLE_STATISTICS EXPDP> Processing object type TABLE_EXPORT/TABLE/STATISTICS/MARKER EXPDP> Processing object type TABLE_EXPORT/TABLE/TABLE EXPDP> Processing object type TABLE_EXPORT/TABLE/INDEX/INDEX EXPDP> . . exported "MING"."MING" 886.8 MB 1694383 rows EXPDP> Master table "SYS"."TSPITR_EXP_tiEu_fDbD" successfully loaded/unloaded EXPDP> ****************************************************************************** EXPDP> Dump file set for SYS.TSPITR_EXP_tiEu_fDbD is: EXPDP> /u01/tspitr_tiEu_89141.dmp EXPDP> Job "SYS"."TSPITR_EXP_tiEu_fDbD" successfully completed at Fri Aug 10 15:08:25 2018 elapsed 0 00:00:41 Export completed contents of Memory Script: { # shutdown clone before import shutdown clone abort } executing Memory Script Oracle instance shut down Performing import of tables... IMPDP> Master table "SYS"."TSPITR_IMP_tiEu_oCco" successfully loaded/unloaded IMPDP> Starting "SYS"."TSPITR_IMP_tiEu_oCco": IMPDP> Processing object type TABLE_EXPORT/TABLE/TABLE IMPDP> Processing object type TABLE_EXPORT/TABLE/TABLE_DATA IMPDP> . . imported "MING"."MING" 886.8 MB 1694383 rows IMPDP> Processing object type TABLE_EXPORT/TABLE/INDEX/INDEX IMPDP> Processing object type TABLE_EXPORT/TABLE/INDEX/STATISTICS/INDEX_STATISTICS IMPDP> Processing object type TABLE_EXPORT/TABLE/STATISTICS/TABLE_STATISTICS IMPDP> Processing object type TABLE_EXPORT/TABLE/STATISTICS/MARKER IMPDP> Job "SYS"."TSPITR_IMP_tiEu_oCco" successfully completed at Fri Aug 10 15:09:18 2018 elapsed 0 00:00:47 Import completed Removing automatic instance Automatic instance removed auxiliary instance file /u01/MINGDB/70B59C073DE92098E053B7D91FACCD7E/datafile/o1_mf_temp_fptgbjwj_.tmp deleted auxiliary instance file /u01/MINGDB/datafile/o1_mf_temp_fptgbgmc_.tmp deleted auxiliary instance file /u01/TIEU_PITR_MINGPDB1_MINGDB/onlinelog/o1_mf_6_fptgf8nf_.log deleted auxiliary instance file /u01/TIEU_PITR_MINGPDB1_MINGDB/onlinelog/o1_mf_5_fptgf8mr_.log deleted auxiliary instance file /u01/TIEU_PITR_MINGPDB1_MINGDB/onlinelog/o1_mf_4_fptgf8mc_.log deleted auxiliary instance file /u01/TIEU_PITR_MINGPDB1_MINGDB/70B59C073DE92098E053B7D91FACCD7E/datafile/o1_mf_tbs_ming_fptgd38x_.dbf deleted auxiliary instance file /u01/TIEU_PITR_MINGPDB1_MINGDB/70B59C073DE92098E053B7D91FACCD7E/datafile/o1_mf_tbs_ming_fptgd389_.dbf deleted auxiliary instance file /u01/MINGDB/70B59C073DE92098E053B7D91FACCD7E/datafile/o1_mf_sysaux_fptg8qt2_.dbf deleted auxiliary instance file /u01/MINGDB/datafile/o1_mf_sysaux_fptg9k7d_.dbf deleted auxiliary instance file /u01/MINGDB/70B59C073DE92098E053B7D91FACCD7E/datafile/o1_mf_undotbs1_fptg8qt7_.dbf deleted auxiliary instance file /u01/MINGDB/datafile/o1_mf_undotbs1_fptg9k7h_.dbf deleted auxiliary instance file /u01/MINGDB/70B59C073DE92098E053B7D91FACCD7E/datafile/o1_mf_system_fptg8qsw_.dbf deleted auxiliary instance file /u01/MINGDB/datafile/o1_mf_system_fptg9k72_.dbf deleted auxiliary instance file /u01/MINGDB/controlfile/o1_mf_fptg8kpo_.ctl deleted auxiliary instance file tspitr_tiEu_89141.dmp deleted Finished recover at 10-AUG-18 恢复过程一目了然：首先创建一个辅助实例，然后将利用备份文件创建另一个克隆PDB出来，然后利用数据泵将目标表从克隆pdb中导出，再将其导入到原库中。当然这里也不是完全一致的克隆。executing command: SET NEWNAME出现了8次，也就是说从备份集中restore了8个数据文件，分别是CDB和PDB的system，sysaux，undo表空间，PDB的TEMP表空间，目标表所在表空间TBS_MING。此外还会恢复参数文件，控制文件以及redo log。根据这个过程需要注意的点如下 1.文件系统空间 2.因为新创建辅助实例，而且内存与原实例一致，所以操作系统可用内存要注意。 3.注意数据泵的缺点。比如故障点和恢复时间点之间的权限赋予。恢复前： root@bd-dev-mingshuo-183:~#free -m total used free shared buffers cached Mem: 7870 7712 157 4302 84 6656 -/+ buffers/cache: 972 6898 Swap: 7999 0 7999 恢复过程： root@bd-dev-mingshuo-183:/u01#free -m total used free shared buffers cached Mem: 7870 2305 5564 1119 7 1497 -/+ buffers/cache: 800 7069 Swap: 7999 144 7855 恢复后u01目录： root@bd-dev-mingshuo-183:/u01#ll total 24 drwx------ 2 root root 16384 Aug 10 15:00 lost+found drwxr-x--- 6 oracle oinstall 4096 Aug 10 15:04 MINGDB drwxr-x--- 4 oracle oinstall 4096 Aug 10 15:07 TIEU_PITR_MINGPDB1_MINGDB 恢复过程中实例： root@bd-dev-mingshuo-183:~#ps -ef|grep smon oracle 1878 1 0 15:02 ? 00:00:00 ora_smon_mingdb oracle 2308 1 0 15:04 ? 00:00:00 ora_smon_tiEu root 2352 2241 0 15:04 pts/5 00:00:00 grep smon 检查数据，已恢复： SQL> select count(*) from ming; COUNT(*) ---------- 1694383 索引也恢复了 SQL> select index_name from user_indexes where table_name='MING'; INDEX_NAME -------------------------------------------------------------------------------- SYS_IL0000027637C00010$$ MING_IDX_01 查询故障点之后的其他表，没有受到影响。 SQL> select count(*) from tag_9561633; COUNT(*) ---------- 36 检查datagurad也没有影响。恢复的时候也可以指定表的名字，REMAP TABLE schema.table_name_old:table_name_new recover table ming.ming OF PLUGGABLE DATABASE MINGPDB1 until scn 9561483 auxiliary destination '/u01' remap table ming.ming:ming_new; 主库： SQL> select count(*) from ming_new; COUNT(*) ---------- 1694383 备库： SQL> select count(*) from ming.ming_new; COUNT(*) ---------- 0 主库切一下归档，备库也与主库一致。