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Describe 襴襦蠏誤殊伎 here
SQL> -- 襴襦蠏 殊 伎
SQL> set linesize 150 pagesize 999
SQL> connect internal
郁屋給.
SQL> select * from v$log;
GROUP# THREAD# SEQUENCE# BYTES MEMBERS ARC STATUS FIRST_CHANGE# FIRST_TI
---------- ---------- ---------- ---------- ---------- --- ---------------- ------------- --------
1 1 658 1048576 1 NO INACTIVE 472248 03/10/30
2 1 659 1048576 1 NO CURRENT 472305 03/10/30
3 1 657 1048576 1 NO INACTIVE 452040 03/10/24
SQL> select 1024*1024 from dual;
1024*1024
----------
1048576
SQL> -- 1MB ″ 蟆 覲伎碁.... 蟆 ′ ..
SQL> select * from tab
2 where tname like '%FILE%';
TNAME TABTYPE CLUSTERID
------------------------------ ------- ----------
C_FILE#_BLOCK# CLUSTER
DBA_DATA_FILES VIEW
DBA_EXP_FILES VIEW
DBA_PROFILES VIEW
DBA_TEMP_FILES VIEW
FILE$ TABLE
FILEXT$ VIEW
GV_$BACKUP_DATAFILE VIEW
GV_$CONTROLFILE VIEW
GV_$CONTROLFILE_RECORD_SECTION VIEW
GV_$DATAFILE VIEW
GV_$DATAFILE_COPY VIEW
GV_$DATAFILE_HEADER VIEW
GV_$DBFILE VIEW
GV_$FILESTAT VIEW
GV_$FILE_PING VIEW
GV_$LOGFILE VIEW
GV_$PROXY_DATAFILE VIEW
GV_$PWFILE_USERS VIEW
GV_$RECOVERY_FILE_STATUS VIEW
GV_$RECOVER_FILE VIEW
GV_$TEMPFILE VIEW
LOADER_FILE_TS VIEW
PROFILE$ TABLE
SYSFILES VIEW
V_$BACKUP_DATAFILE VIEW
V_$CONTROLFILE VIEW
V_$CONTROLFILE_RECORD_SECTION VIEW
V_$DATAFILE VIEW
V_$DATAFILE_COPY VIEW
V_$DATAFILE_HEADER VIEW
V_$DBFILE VIEW
V_$FILESTAT VIEW
V_$FILE_PING VIEW
V_$LOGFILE VIEW
V_$PROXY_DATAFILE VIEW
V_$PWFILE_USERS VIEW
V_$RECOVERY_FILE_STATUS VIEW
V_$RECOVER_FILE VIEW
V_$TEMPFILE VIEW
40 螳 給.
SQL> select * from v$logfile;
GROUP# STATUS MEMBER
---------- ------- -----------------------------------
1 STALE E:\ORACLE\ORADATA\ORA816\REDO03.LOG
3 STALE E:\ORACLE\ORADATA\ORA816\REDO01.LOG
2 E:\ORACLE\ORADATA\ORA816\REDO02.LOG
SQL> -- 蠍一 螳 ろ 讌襷 れ襦 覿磯伎 .
SQL> -- 襦蠏 殊 覃伎 螻 り 覲企 螻, 蠏碁９朱 り
SQL> -- 螳伎 .
SQL> -- 襦蠏 蠏碁９ 豢螳
SQL> alter database add logfile group 4
2 ('E:\ORACLE\ORADATA\ORA816\REDO04.LOG') size 1M;
一危覯伎り 覲蟆暑給.
SQL> -- れ螻 螳 螳襯 襷企蟾讌 螳 豢螳 .
SQL> alter database add logfile group 5
2 ('E:\ORACLE\ORADATA\ORA816\REDO05.LOG',
3 'E:\ORACLE\ORADATA\ORA816\REDO05_2.LOG') size 1M;
一危覯伎り 覲蟆暑給.
SQL> --襷企襷 豢螳
SQL> --襷企 size れ . 覃 襷企朱Μ 蠍郁 螳 伎螳 蠍 覓語企.
SQL> alter database add logfile member 'E:\ORACLE\ORADATA\ORA816\REDO01_2.LOG'
2 to group 1;
一危覯伎り 覲蟆暑給.
SQL> alter database add logfile member 'E:\ORACLE\ORADATA\ORA816\REDO02_2.LOG'
2 to group 2;
一危覯伎り 覲蟆暑給.
SQL> alter database add logfile member 'E:\ORACLE\ORADATA\ORA816\REDO03_2.LOG'
2 to group 3;
一危覯伎り 覲蟆暑給.
SQL> alter database add logfile member 'E:\ORACLE\ORADATA\ORA816\REDO04_2.LOG'
2 to group 4;
一危覯伎り 覲蟆暑給.
SQL> select * from v$log;
GROUP# THREAD# SEQUENCE# BYTES MEMBERS ARC STATUS FIRST_CHANGE# FIRST_TI
---------- ---------- ---------- ---------- ---------- --- ---------------- ------------- --------
1 1 658 1048576 2 NO INACTIVE 472248 03/10/30
2 1 659 1048576 2 NO CURRENT 472305 03/10/30
3 1 657 1048576 2 NO INACTIVE 452040 03/10/24
4 1 0 1048576 2 YES UNUSED 0
5 1 0 1048576 2 YES UNUSED 0
SQL> col group# format 999
SQL> col status format a20
SQL> col member format a50
SQL> select * from v$logfile;
GROUP# STATUS MEMBER
------ -------------------- --------------------------------------------------
1 STALE E:\ORACLE\ORADATA\ORA816\REDO03.LOG
3 STALE E:\ORACLE\ORADATA\ORA816\REDO01.LOG
2 E:\ORACLE\ORADATA\ORA816\REDO02.LOG
4 E:\ORACLE\ORADATA\ORA816\REDO04.LOG
5 E:\ORACLE\ORADATA\ORA816\REDO05.LOG
5 E:\ORACLE\ORADATA\ORA816\REDO05_2.LOG
1 INVALID E:\ORACLE\ORADATA\ORA816\REDO01_2.LOG
2 INVALID E:\ORACLE\ORADATA\ORA816\REDO02_2.LOG
3 INVALID E:\ORACLE\ORADATA\ORA816\REDO03_2.LOG
4 INVALID E:\ORACLE\ORADATA\ORA816\REDO04_2.LOG
10 螳 給.
SQL>
襴襦蠏 殊 襦 るジ ろ 覿 る 蟆 譯 譴. 覃 襦 LGWR螳
郁鍵 覓語 蟆渚 譴企 蟆 譴螻, 襦蠏 郁鍵朱 DBMS 殊 觜れ
レ 豕 蠍 覓語企.
襴襦蠏 殊 伎 焔伎 譯朱 讌襷 れ旧 襦蠏碁ゼ 郁鍵
伎 LGWR 襦語る 伎 狩伎 蟆企. 讀, CPU螳 螻 蟆企朱 襴.
鏤
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覈 襷襯 蟾讌 讌 蟾讌 覃襦 . |