一台老的测试AIX服务器，没人理过，最近一看Oracle闪回满了。清理了下。
Version: Oracle 10gR2 for AIX
现象:
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1 2 3 4 5 6 7 SQL> alter database open; alter database open * ERROR at line 1: ORA-16014: log 3 sequence# 157 not archived, no available destinations ORA-00312: online log 3 thread 1: '/opt/oracle/software/oradata/orcl/redo03.log'报这个错误是因为闪回区满了：
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1 2 3 4 5 6 7 8 -- 扩大闪回区空间 SQL> alter system set db_recovery_file_dest_size=3g scope=both; System altered. SQL> alter database open; Database altered.闪回区相关信息查询:
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1 2 3 4 5 6 7 8 --查看归档模式 SQL> archive log list; --归档空间使用率 SQL> select * from v$flash_recovery_area_usage; --闪回区所占用的空间 SQL> select sum(percent_space_used)*3/100 from v$flash_recovery_area_usage;释放空间:
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1 2 3 4 5 6 7 8 9 10 11 12 13 --删除备份 crosscheck backupset; delete noprompt expired backupset; delete obsolete; delete noprompt expired backup; delete noprompt expired copy; --清掉归档 --清掉过期的归档 crosscheck archivelog all; delete noprompt expired archivelog all; --要还不够，强制删除掉指定天数前的归档 delete noprompt archivelog all completed before 'sysdate-7';除了在闪回区删文件，或扩空间的方式，还可以通过将归档指定到其它目录的方式来做。
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1 2 3 4 5 6 7 8 9 10 11 SQL> alter system set log_archive_dest_1='location=/nfsdisk/oraarc' scope=both ; System altered. SQL> archive log list; Database log mode Archive Mode Automatic archival Enabled Archive destination /nfsdisk/oraarc Oldest online log sequence 161 Next log sequence to archive 161 Current log sequence 163新闻热点
疑难解答
