基于SCN恢复 第一篇
1、在删除数据之前，察看下SCN号是多少：
SQL> col name format a45
SQL> set line 300
SQL> select name,checkpoint_change# from v$datafile_header;
NAME CHECKPOINT_CHANGE#
---------------------------------------------------------------
/DBBak2/oradata/WWL/system01.dbf 1487389
/DBBak2/oradata/WWL/undotbs01.dbf 1487389
/DBBak2/oradata/WWL/sysaux01.dbf 1487389
/DBBak2/oradata/WWL/users01.dbf 1487389
/DBBak2/oradata/WWL/wwl01.dbf 1487389
/DBBak2/oradata/WWL/wwl02.dbf 1487389
/DBBak2/oradata/WWL/wwl03.dbf 1487389
7 rows selected.
SQL> select file#,checkpoint_change#from v$datafile;
FILE# CHECKPOINT_CHANGE#
---------- ------------------
1 1487389
2 1487389
3 1487389
4 1487389
5 1487389
6 1487389
7 1487389
7 rows selected.
SQL>
2、删除测试用表：
SQL> drop table wwl002 purge;
Table dropped.
SQL> drop table wwl003 purge;
Table dropped.
SQL> drop table wwl004 purge;
Table dropped.
SQL> drop table wwl005 purge;
Table dropped.
3、开始做基于SCN的恢复：
SQL> recover database until change1487389;
ORA-00279: change 1436429 generated at07/12/2012 09:54:38 needed for thread 1
ORA-00289: suggestion :/DBSoft/product/10.2.0/db_1/dbs/arch1_3_788372282.dbf
ORA-00280: change 1436429 for thread 1 isin sequence #3
Specify log: {
auto
ORA-00279: change 1440657 generated at07/12/2012 14:00:52 needed for thread 1
ORA-00289: suggestion :/DBSoft/product/10.2.0/db_1/dbs/arch1_1_788450452.dbf
ORA-00280: change 1440657 for thread 1 isin sequence #1
ORA-00279: change 1440855 generated at07/12/2012 15:08:58 needed for thread 1
ORA-00289: suggestion :/DBSoft/product/10.2.0/db_1/dbs/arch1_1_788454538.dbf
ORA-00280: change 1440855 for thread 1 isin sequence #1
ORA-00279: change 1441316 generated at07/12/2012 15:19:50 needed for thread 1
ORA-00289: suggestion :/DBSoft/product/10.2.0/db_1/dbs/arch1_1_788455190.dbf
ORA-00280: change 1441316 for thread 1 isin sequence #1
ORA-00279: change 1442275 generated at07/12/2012 15:52:01 needed for thread 1
ORA-00289: suggestion : /DBSoft/product/10.2.0/db_1/dbs/arch1_1_788457121.dbf
ORA-00280: change 1442275 for thread 1 isin sequence #1
ORA-00279: change 1442953 generated at07/12/2012 16:25:06 needed for thread 1
ORA-00289: suggestion :/DBSoft/product/10.2.0/db_1/dbs/arch1_1_788459106.dbf
ORA-00280: change 1442953 for thread 1 isin sequence #1
ORA-00279: change 1462958 generated at07/12/2012 16:28:16 needed for thread 1
ORA-00289: suggestion :/DBSoft/product/10.2.0/db_1/dbs/arch1_2_788459106.dbf
ORA-00280: change 1462958 for thread 1 isin sequence #2
ORA-00278: log file'/DBSoft/product/10.2.0/db_1/dbs/arch1_1_788459106.dbf' no longer needed forthis recovery
ORA-00279: change 1462963 generated at07/12/2012 17:17:59 needed for thread 1
ORA-00289: suggestion : /DBSoft/product/10.2.0/db_1/dbs/arch1_1_788462279.dbf
ORA-00280: change 1462963 for thread 1 isin sequence #1
ORA-00279: change 1483784 generated at07/12/2012 17:54:25 needed for thread 1
ORA-00289: suggestion :/