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连接Oracle 报错:ORA-09817: Write to audit file failed. [Oracle@qs-dmm-rh1 dave]$ sqlplus sys/oracle as sysdba;SQL*Plus: Release 10.2.0.4.0 - Production on Thu Mar 17 16:35:02 2011Copyright (c) 1982, 2007, Oracle. All Rights Reserved. ERROR:ORA-09817: Write to audit file failed.--这种错误基本是磁盘空间满了Enter user-name: ERROR:ORA-01017: invalid username/password; logon denied Enter user-name: ERROR:ORA-01017: invalid username/password; logon denied SP2-0157: unable to CONNECT to ORACLE after 3 attempts, exiting SQL*Plus[oracle@qs-dmm-rh1 dave]$ oerr ora 981709817, 00000, "Write to audit file failed."// *Cause: ORACLE was unable to write an entry to the file used as the// audit trail.// *Action: Check the UNIX error number for a possible operating system error.// If there is no error, contact Oracle Support Services.[oracle@qs-dmm-rh1 dave]$ df -lhFilesystem Size Used Avail Use% Mounted on/dev/sda3 13G 12G 136K 100% //dev/sda1 99M 12M 83M 12% /boottmpfs 506M 0 506M 0% /dev/shm[oracle@qs-dmm-rh1 dave]$ 删除部分文件后: [oracle@qs-dmm-rh1 u01]$ df -lhFilesystem Size Used Avail Use% Mounted on/dev/sda3 13G 9.1G 2.8G 77% //dev/sda1 99M 12M 83M 12% /boottmpfs 506M 0 506M 0% /dev/shm 再次连接正常: [oracle@qs-dmm-rh1 u01]$ sqlplus / as sysdba;SQL*Plus: Release 10.2.0.4.0 - Production on Thu Mar 17 17:06:43 2011 Copyright (c) 1982, 2007, Oracle. All Rights Reserved. Connected to:Oracle Database 10g Enterprise Edition Release 10.2.0.4.0 - ProductionWith the Partitioning, OLAP, Data Mining and Real Application Testing options SQL> select open_mode from v$database; OPEN_MODE----------MOUNTED有关Oracle Data Guard Failover 的说明Oracle 非系统表空间"noncrit " 无法使用系统回退段 详细解析相关资讯 Oracle教程