文档课题:oracle在线增加redo日志组成员. 数据库:oracle11.2.0.4 操作过程SYS@orcl>select group#,bytes/1024/1024 "size(M)",status,archived from v$log; GROUP# size(M) STATUS ARC -------------------- ---------------- --- 1 50 INACTIVE YES 2 50 INACTIVE YES 3 50 CURRENT NO SYS@orcl>select member from v$logfile; MEMBER -------------------------------------------------------------------------------- /u01/app/oracle/oradata/orcl/redo03.log /u01/app/oracle/oradata/orcl/redo02.log /u01/app/oracle/oradata/orcl/redo01.log SYS@orcl>alter database add logfile member'/u01/app/oracle/fast_recovery_area/ORCL/onlinelog/redo01b.log' to group 1; Databasealtered. SYS@orcl>select group#,members,bytes/1024/1024 "size(M)",status,archived fromv$log; GROUP# MEMBERS size(M) STATUS ARC -------------------- ---------- ---------------- --- 1 2 50 INACTIVE YES 2 1 50 INACTIVE YES 3 1 50 CURRENT NO SYS@orcl>alter database add logfile member'/u01/app/oracle/fast_recovery_area/ORCL/onlinelog/redo02b.log' to group 2; Databasealtered. SYS@orcl>select group#,members,bytes/1024/1024 "size(M)",status,archived fromv$log; GROUP# MEMBERS size(M) STATUS ARC -------------------- ---------- ---------------- --- 1 2 50 INACTIVE YES 2 2 50 INACTIVE YES 3 1 50 CURRENT NO SYS@orcl>alter system switch logfile 2 ; Systemaltered. SYS@orcl>alter system checkpoint; Systemaltered. SYS@orcl>select group#,members,bytes/1024/1024 "size(M)",status,archived fromv$log; GROUP# MEMBERS size(M) STATUS ARC -------------------- ---------- ---------------- --- 1 2 50 CURRENT NO 2 2 50 INACTIVE YES 3 1 50 INACTIVE YES SYS@orcl>alter database add logfile member '/u01/app/oracle/fast_recovery_area/ORCL/onlinelog/redo03b.log'to group 3; Databasealtered. SYS@orcl>select group#,members,bytes/1024/1024 "size(M)",status,archived fromv$log; GROUP# MEMBERS size(M) STATUS ARC -------------------- ---------- ---------------- --- 1 2 50 CURRENT NO 2 2 50 INACTIVE YES 3 2 50 INACTIVE YES SYS@orcl>select member from v$logfile; MEMBER -------------------------------------------------------------------------------- /u01/app/oracle/oradata/orcl/redo03.log /u01/app/oracle/oradata/orcl/redo02.log /u01/app/oracle/oradata/orcl/redo01.log /u01/app/oracle/fast_recovery_area/ORCL/onlinelog/redo01b.log /u01/app/oracle/fast_recovery_area/ORCL/onlinelog/redo02b.log /u01/app/oracle/fast_recovery_area/ORCL/onlinelog/redo03b.log 6rows selected. 说明:如上所示,成功添加日志组成员.
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