Docs/数据库/oracle/归档日志处理.md

查看归档日志使用情况

sqlplus / as sysdba
select * from v$recovery_file_dest;
select * from V$FLASH_RECOVERY_AREA_USAGE;

按小时统计归档量

SELECT SUBSTR(TO_CHAR(first_time, 'MM/DD/RR HH:MI:SS'),1,5) Day,
    SUM(DECODE(SUBSTR(TO_CHAR(first_time, 'MM/DD/RR HH24:MI:SS'),10,2),'00',1,0)) H00,
    SUM(DECODE(SUBSTR(TO_CHAR(first_time, 'MM/DD/RR HH24:MI:SS'),10,2),'01',1,0)) H01,
    SUM(DECODE(SUBSTR(TO_CHAR(first_time, 'MM/DD/RR HH24:MI:SS'),10,2),'02',1,0)) H02,
    SUM(DECODE(SUBSTR(TO_CHAR(first_time, 'MM/DD/RR HH24:MI:SS'),10,2),'03',1,0)) H03,
    SUM(DECODE(SUBSTR(TO_CHAR(first_time, 'MM/DD/RR HH24:MI:SS'),10,2),'04',1,0)) H04,
    SUM(DECODE(SUBSTR(TO_CHAR(first_time, 'MM/DD/RR HH24:MI:SS'),10,2),'05',1,0)) H05,
    SUM(DECODE(SUBSTR(TO_CHAR(first_time, 'MM/DD/RR HH24:MI:SS'),10,2),'06',1,0)) H06,
    SUM(DECODE(SUBSTR(TO_CHAR(first_time, 'MM/DD/RR HH24:MI:SS'),10,2),'07',1,0)) H07,
    SUM(DECODE(SUBSTR(TO_CHAR(first_time, 'MM/DD/RR HH24:MI:SS'),10,2),'08',1,0)) H08,
    SUM(DECODE(SUBSTR(TO_CHAR(first_time, 'MM/DD/RR HH24:MI:SS'),10,2),'09',1,0)) H09,
    SUM(DECODE(SUBSTR(TO_CHAR(first_time, 'MM/DD/RR HH24:MI:SS'),10,2),'10',1,0)) H10,
    SUM(DECODE(SUBSTR(TO_CHAR(first_time, 'MM/DD/RR HH24:MI:SS'),10,2),'11',1,0)) H11,
    SUM(DECODE(SUBSTR(TO_CHAR(first_time, 'MM/DD/RR HH24:MI:SS'),10,2),'12',1,0)) H12,
    SUM(DECODE(SUBSTR(TO_CHAR(first_time, 'MM/DD/RR HH24:MI:SS'),10,2),'13',1,0)) H13,
    SUM(DECODE(SUBSTR(TO_CHAR(first_time, 'MM/DD/RR HH24:MI:SS'),10,2),'14',1,0)) H14,
    SUM(DECODE(SUBSTR(TO_CHAR(first_time, 'MM/DD/RR HH24:MI:SS'),10,2),'15',1,0)) H15,
    SUM(DECODE(SUBSTR(TO_CHAR(first_time, 'MM/DD/RR HH24:MI:SS'),10,2),'16',1,0)) H16,
    SUM(DECODE(SUBSTR(TO_CHAR(first_time, 'MM/DD/RR HH24:MI:SS'),10,2),'17',1,0)) H17,
    SUM(DECODE(SUBSTR(TO_CHAR(first_time, 'MM/DD/RR HH24:MI:SS'),10,2),'18',1,0)) H18,
    SUM(DECODE(SUBSTR(TO_CHAR(first_time, 'MM/DD/RR HH24:MI:SS'),10,2),'19',1,0)) H19,
    SUM(DECODE(SUBSTR(TO_CHAR(first_time, 'MM/DD/RR HH24:MI:SS'),10,2),'20',1,0)) H20,
    SUM(DECODE(SUBSTR(TO_CHAR(first_time, 'MM/DD/RR HH24:MI:SS'),10,2),'21',1,0)) H21,
    SUM(DECODE(SUBSTR(TO_CHAR(first_time, 'MM/DD/RR HH24:MI:SS'),10,2),'22',1,0)) H22,
    SUM(DECODE(SUBSTR(TO_CHAR(first_time, 'MM/DD/RR HH24:MI:SS'),10,2),'23',1,0)) H23,
    COUNT(*) TOTAL
FROM v$log_history a
WHERE first_time>=to_char(sysdate-11)
GROUP BY SUBSTR(TO_CHAR(first_time, 'MM/DD/RR HH:MI:SS'),1,5)
ORDER BY SUBSTR(TO_CHAR(first_time, 'MM/DD/RR HH:MI:SS'),1,5) DESC;

查询日志目录位置

show parameter recover;

计算fast_recovery_area已经占用的空间

select sum(percent_space_used)*3/100 from v$flash_recovery_area_usage;

修改fast_recovery_aread的空间

ALTER SYSTEM SET DB_RECOVERY_FILE_DEST_SIZE=8g;

rman清理日志

rman target /

删除过期归档日志

crosscheck archivelog all;
delete expired archivelog all;

删除昨天以前的归档日志

delete noprompt archivelog until time  'sysdate-1';

其他

显示rman配置

show all;

报告目标数据库的物理结构

report schema;

报告陈旧备份

report obsolete;

报告不可恢复的数据文件

report unrecoverable;

列出备份信息

list backup;
list backup summary;
list backup of database;
list backup of tablespace table_name;
list backup of controlfile;
list backup of spfile;
list backupset id;

校验备份

crosscheck backup;
crosscheck backup of database;
crosscheck backup of tablespace system;
crosscheck backup of controlfile;
crosscheck backup of spfile;
crosscheck backup of archivelog all;

校验没有备份过的归档日志

crosscheck archivelog all;
delete noprompt expired archivelog all;

刪除所有的Archivelog files

delete archivelog all;　

強制刪除昨天以前的archivelog files

delete force archivelog until time 'sysdate -1';
delete noprompt  force archivelog until time 'sysdate -2';

刪除所有过期的Archivelog files

delete expired archivelog all;

删除陈旧备份

delete obsolete;
delete noprompt obsolete;

删除所有expired的备份（包括归档日志、控制文件、备份聚）

delete expired backup;

删除所有备份

delete backup;

删除指定tag备份

delete backup tag xxx;

改为长期备份

change backupset id unavailable;
change backupset id keep forever logs;
change backupset id keep until time 'sysdate+30' logs;
change backupset id nokeep;

改为基于时间的备份

configure retention policy to recovery window of 30 days;

改为基于冗余数量的备份

configure retention policy to redundancy  n ;

取消备份保留策略

configure retention policy to none;

设置归档日志存放在其它位置

set archivelog destination to 'e: emp';