Oracle中对UNNAMEDnnnnn文件的处理

一：构造一个UNNAMEDnnnnn文件其中nnnnn为数据文件绝对文件号 1 控制文件备份时当前联机日志状态如下select group#,archived,sequence#,status from v$log GROUP# ARC SEQUENCE# STATUS---------- --- ---------- ---------------- 1 YES 2 ACTIVE 2 YES 1 ACTIVE 3 YES 3 ACTIVE 4 YES 4 ACTIVE 5 YES 5 ACTIVE 6 NO 6 CURRENT2 当前控制控制文件备份如下RMAN> list backup of controlfile; List of Backup Sets=================== BS Key Type LV Size Device Type Elapsed Time Completion Time------- ---- -- ---------- ----------- ------------ ---------------5 Full 7.11M DISK 00:00:03 14-DEC-12BP Key: 5 Status: AVAILABLE Compressed: NO Tag: TAG20121214T062943 Piece Name: /Oracle/app/db1/dbs/0fnsqnsl_1_1 Control File Included: Ckp SCN: 2779647876 Ckp time: 14-DEC-12 3 创建表空间及测试数据时日志状态如下：SQL> select group#,archived,sequence#,status from v$Log; GROUP# ARC SEQUENCE# STATUS---------- --- ---------- ---------------- 1 YES 14 INACTIVE 2 YES 13 INACTIVE 3 NO 15 CURRENT 4 YES 10 INACTIVE 5 YES 11 INACTIVE 6 YES 12 INACTIVE 4 此时创建表空间SQL> create tablespace jiujian datafile "/oracle/test/jiujian.dbf" size 1m; Tablespace created. SQL> select file#,name from v$datafile; FILE# NAME---------- ---------------------------------------- 1 /oracle/test/system1.dbf 2 /oracle/test/zxb.dbf 3 /oracle/test/sysaux01.dbf 4 /oracle/test/users01.dbf 5 /oracle/test/zxa.dbf 6 /oracle/test/test1.dbf 7 /oracle/test/zxc.dbf 8 /oracle/test/undotbs1.dbf 9 /oracle/test/zxbig.dbf 10 /oracle/test2.dbf 11 /oracle/test/jiujian.dbf5 插入测试数据：SQL> create table t3（x int） tablespace jiujian1; Table created. SQL> begin2 for i in 1..20 loop 3 insert into t3 values（i）; 4 end loop; 5 commit; 6 end; 7 / PL/SQL procedure successfully completed. SQL> select * from t3; X---------- 1 2 3 4 5 6 7 8 9 10 11 X---------- 12 13 14 15 16 17 18 19 20 6 6到14号归档的scn范围SEQUENCE# NAME FIRST_CHANGE# NEXT_CHANGE#---------- ---------------------------------------- ------------- ------------ 6 /oracle/archive/1_6_801957264.dbf 2779647184 2779648239 7 /oracle/archive/1_7_801957264.dbf 2779648239 2779648241 8 /oracle/archive/1_8_801957264.dbf 2779648241 2779648243 9 /oracle/archive/1_9_801957264.dbf 2779648243 2779648245 10 /oracle/archive/1_10_801957264.dbf 2779648245 2779648247 11 /oracle/archive/1_11_801957264.dbf 2779648247 2779648250 12 /oracle/archive/1_12_801957264.dbf 2779648250 2779648252 13 /oracle/archive/1_13_801957264.dbf 2779648252 2779648254 14 /oracle/archive/1_14_801957264.dbf 2779648254 2779648256

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