【OracleDatabase】数据库日志管理-创新互联

查询日志文件 SQL> col member for a50 SQL> select group#,status,type,member from v$logfile order by group#; GROUP# STATUS TYPE MEMBER ---------- ------- ------- -------------------------------------------------- 1 ONLINE /u01/app/oracle/oradata/wallet/redo01.log 2 ONLINE /u01/app/oracle/oradata/wallet/redo02.log 3 ONLINE /u01/app/oracle/oradata/wallet/redo03.log 查询日志组 SQL> select group#,sequence#,members,bytes,status,archived from v$log; GROUP# SEQUENCE# MEMBERS BYTES STATUS ARC ---------- ---------- ---------- ---------- ---------------- --- 1 25 1 52428800 INACTIVE YES 2 26 1 52428800 INACTIVE YES 3 27 1 52428800 CURRENT NO 删除日志组1 SQL> alter database drop logfile group 1; Database altered. SQL> host rm -rf /u01/app/oracle/oradata/wallet/redo01.log 创建日志组1 SQL> alter database add logfile group 1 ('/u01/app/oracle/oradata/wallet/redo01a.log','/u01/app/oracle/oradata/wallet/redo01b.log') size 50M; Database altered. 删除日志组2 SQL> alter database drop logfile group 2; Database altered. SQL> host rm -rf /u01/app/oracle/oradata/wallet/redo02.log 创建日志组2 SQL> alter database add logfile group 2 ('/u01/app/oracle/oradata/wallet/redo02a.log','/u01/app/oracle/oradata/wallet/redo02b.log') size 50M; Database altered. 日志组切换 SQL> alter system switch logfile; System altered. 执行检查点 SQL> alter system checkpoint; System altered. 删除日志组3 SQL> alter database drop logfile group 3; Database altered. SQL> host rm -rf /u01/app/oracle/oradata/wallet/redo03.log 创建日志组3 SQL> alter database add logfile group 3 ('/u01/app/oracle/oradata/wallet/redo03a.log','/u01/app/oracle/oradata/wallet/redo03b.log') size 50M; Database altered. SQL> select group#,status,type,member from v$logfile order by group#; GROUP# STATUS TYPE MEMBER ---------- ------- ------- -------------------------------------------------- 1 ONLINE /u01/app/oracle/oradata/wallet/redo01a.log 1 ONLINE /u01/app/oracle/oradata/wallet/redo01b.log 2 ONLINE /u01/app/oracle/oradata/wallet/redo02b.log 2 ONLINE /u01/app/oracle/oradata/wallet/redo02a.log 3 ONLINE /u01/app/oracle/oradata/wallet/redo03b.log 3 ONLINE /u01/app/oracle/oradata/wallet/redo03a.log SQL> select group#,sequence#,members,bytes,status,archived from v$log; GROUP# SEQUENCE# MEMBERS BYTES STATUS ARC ---------- ---------- ---------- ---------- ---------------- --- 1 28 2 52428800 CURRENT NO 2 0 2 52428800 UNUSED YES 3 0 2 52428800 UNUSED YES 增加日志文件 SQL> alter database add logfile member '/u01/app/oracle/oradata/wallet/redo01c.log' to group 1, '/u01/app/oracle/oradata/wallet/redo02c.log' to group 2, '/u01/app/oracle/oradata/wallet/redo03c.log' to group 3; Database altered. SQL> select group#,status,type,member from v$logfile order by group#; GROUP# STATUS TYPE MEMBER ---------- ------- ------- -------------------------------------------------- 1 ONLINE /u01/app/oracle/oradata/wallet/redo01b.log 1 INVALID ONLINE /u01/app/oracle/oradata/wallet/redo01c.log 1 ONLINE /u01/app/oracle/oradata/wallet/redo01a.log 2 ONLINE /u01/app/oracle/oradata/wallet/redo02a.log 2 ONLINE /u01/app/oracle/oradata/wallet/redo02b.log 2 INVALID ONLINE /u01/app/oracle/oradata/wallet/redo02c.log 3 ONLINE /u01/app/oracle/oradata/wallet/redo03a.log 3 ONLINE /u01/app/oracle/oradata/wallet/redo03b.log 3 INVALID ONLINE /u01/app/oracle/oradata/wallet/redo03c.log SQL> select group#,sequence#,members,bytes,status,archived from v$log; GROUP# SEQUENCE# MEMBERS BYTES STATUS ARC ---------- ---------- ---------- ---------- ---------------- --- 1 28 3 52428800 CURRENT NO 2 0 3 52428800 UNUSED YES 3 0 3 52428800 UNUSED YES 删除日志文件 SQL> alter database drop logfile member '/u01/app/oracle/oradata/wallet/redo03c.log'; Database altered. SQL> host rm -rf /u01/app/oracle/oradata/wallet/redo03c.log SQL> alter database drop logfile member '/u01/app/oracle/oradata/wallet/redo02c.log'; Database altered. SQL> host rm -rf /u01/app/oracle/oradata/wallet/redo02c.log SQL> alter system switch logfile; System altered. SQL> alter system checkpoint; System altered. SQL> alter database drop logfile member '/u01/app/oracle/oradata/wallet/redo01c.log'; Database altered. SQL> host rm -rf /u01/app/oracle/oradata/wallet/redo01c.log 移动日志文件 SQL> shutdown immediate Database closed. Database dismounted. ORACLE instance shut down. SQL> quit [oracle@wallet01 ~]$ cp /u01/app/oracle/oradata/wallet/redo01b.log /u02/app/oracle/oradata/wallet/redo01b.log [oracle@wallet01 ~]$ cp /u01/app/oracle/oradata/wallet/redo02b.log /u02/app/oracle/oradata/wallet/redo02b.log [oracle@wallet01 ~]$ cp /u01/app/oracle/oradata/wallet/redo03b.log /u02/app/oracle/oradata/wallet/redo03b.log [oracle@wallet01 ~]$ sqlplus / as sysdba SQL> startup mount ORACLE instance started. Total System Global Area 1068937216 bytes Fixed Size 2260088 bytes Variable Size 335545224 bytes Database Buffers 725614592 bytes Redo Buffers 5517312 bytes Database mounted. SQL> alter database rename file '/u01/app/oracle/oradata/wallet/redo01b.log' to '/u02/app/oracle/oradata/wallet/redo01b.log'; Database altered. SQL> alter database rename file '/u01/app/oracle/oradata/wallet/redo02b.log' to '/u02/app/oracle/oradata/wallet/redo02b.log'; Database altered. SQL> alter database rename file '/u01/app/oracle/oradata/wallet/redo03b.log' to '/u02/app/oracle/oradata/wallet/redo03b.log'; Database altered. SQL> alter database open; Database altered. SQL> select group#,status,type,member from v$logfile order by group#; GROUP# STATUS TYPE MEMBER ---------- ------- ------- -------------------------------------------------- 1 ONLINE /u01/app/oracle/oradata/wallet/redo01a.log 1 ONLINE /u02/app/oracle/oradata/wallet/redo01b.log 2 ONLINE /u02/app/oracle/oradata/wallet/redo02b.log 2 ONLINE /u01/app/oracle/oradata/wallet/redo02a.log 3 ONLINE /u02/app/oracle/oradata/wallet/redo03b.log 3 ONLINE /u01/app/oracle/oradata/wallet/redo03a.log

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【OracleDatabase】数据库日志管理-创新互联

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