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本篇內(nèi)容介紹了“RAC怎么擴(kuò)大online日志組大小”的有關(guān)知識(shí),在實(shí)際案例的操作過(guò)程中,不少人都會(huì)遇到這樣的困境,接下來(lái)就讓小編帶領(lǐng)大家學(xué)習(xí)一下如何處理這些情況吧!希望大家仔細(xì)閱讀,能夠?qū)W有所成!
1.查看當(dāng)前默認(rèn)日志組
SQL> select GROUP#,THREAD#,SEQUENCE#,BYTES,MEMBERS,ARCHIVED,STATUS from v$log; GROUP# THREAD# SEQUENCE# BYTES MEMBERS ARC STATUS ---------- ---------- ---------- ---------- ---------- --- ---------------- 1 1 821 52428800 1 YES INACTIVE 2 1 822 52428800 1 NO CURRENT 3 2 241 52428800 1 YES INACTIVE 4 2 242 52428800 1 NO CURRENT |
2.添加日志組和成員
節(jié)點(diǎn)1 alter database add logfile thread 1 group 11 ('+DATA/funddb/onlinelog/redo11a.log','+DATA/funddb/onlinelog/redo11b.log') size 500M; alter database add logfile thread 1 group 12 ('+DATA/funddb/onlinelog/redo12a.log','+DATA/funddb/onlinelog/redo12b.log') size 500M; alter database add logfile thread 1 group 13 ('+DATA/funddb/onlinelog/redo13a.log','+DATA/funddb/onlinelog/redo13b.log') size 500M; 節(jié)點(diǎn)2 alter database add logfile thread 2 group 14 ('+DATA/funddb/onlinelog/redo14a.log','+DATA/funddb/onlinelog/redo14b.log') size 500M; alter database add logfile thread 2 group 15 ('+DATA/funddb/onlinelog/redo15a.log','+DATA/funddb/onlinelog/redo15b.log') size 500M; alter database add logfile thread 2 group 16 ('+DATA/funddb/onlinelog/redo16a.log','+DATA/funddb/onlinelog/redo16b.log') size 500M; |
3.切換日志
節(jié)點(diǎn)1 SQL> alter system switch logfile; System altered. 節(jié)點(diǎn)2 SQL> alter system switch logfile; System altered. |
4.查詢(xún)并等待
SQL> select GROUP#,THREAD#,SEQUENCE#,BYTES,MEMBERS,ARCHIVED,STATUS from v$log; GROUP# THREAD# SEQUENCE# BYTES MEMBERS ARC STATUS ---------- ---------- ---------- ---------- ---------- --- ---------------- 1 1 821 52428800 1 YES INACTIVE 2 1 822 52428800 1 YES ACTIVE 3 2 241 52428800 1 YES INACTIVE 4 2 242 52428800 1 YES ACTIVE 11 1 823 524288000 2 NO CURRENT 12 1 0 524288000 2 YES UNUSED 13 1 0 524288000 2 YES UNUSED 14 2 243 524288000 2 NO CURRENT 15 2 0 524288000 2 YES UNUSED 16 2 0 524288000 2 YES UNUSED 10 rows selected. 等待...... SQL> select GROUP#,THREAD#,SEQUENCE#,BYTES,MEMBERS,ARCHIVED,STATUS from v$log; GROUP# THREAD# SEQUENCE# BYTES MEMBERS ARC STATUS ---------- ---------- ---------- ---------- ---------- --- ---------------- 1 1 821 52428800 1 YES INACTIVE 2 1 822 52428800 1 YES INACTIVE 3 2 241 52428800 1 YES INACTIVE 4 2 242 52428800 1 YES INACTIVE 11 1 823 524288000 2 NO CURRENT 12 1 0 524288000 2 YES UNUSED 13 1 0 524288000 2 YES UNUSED 14 2 243 524288000 2 NO CURRENT 15 2 0 524288000 2 YES UNUSED 16 2 0 524288000 2 YES UNUSED 10 rows selected. |
5.刪除舊日志組
SQL> alter database drop logfile group 1; Database altered. SQL> alter database drop logfile group 2; Database altered. SQL> alter database drop logfile group 3; Database altered. SQL> alter database drop logfile group 4; Database altered. |
6.確認(rèn)完成日志組的擴(kuò)大
SQL> select GROUP#,THREAD#,SEQUENCE#,BYTES,MEMBERS,ARCHIVED,STATUS from v$log; GROUP# THREAD# SEQUENCE# BYTES MEMBERS ARC STATUS ---------- ---------- ---------- ---------- ---------- --- ---------------- 11 1 823 524288000 2 NO CURRENT 12 1 0 524288000 2 YES UNUSED 13 1 0 524288000 2 YES UNUSED 14 2 243 524288000 2 NO CURRENT 15 2 0 524288000 2 YES UNUSED 16 2 0 524288000 2 YES UNUSED |
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