ORA-03113 解决办法

有个数据库，好久没碰了，今天临时需要用一下，发现instance挂了，启动时候报如下错误：

SQL*Plus: Release 11.2.0.1.0 Production on Wed Nov 27 13:42:46 2013

Copyright (c) 1982, 2009, Oracle.  All rights reserved.

SQL> conn /as sysdba
Connected to an idle instance.
SQL> startup
ORACLE instance started.

Total System Global Area 6747725824 bytes
Fixed Size		    2213976 bytes
Variable Size		 5234493352 bytes
Database Buffers	 1476395008 bytes
Redo Buffers		   34623488 bytes
Database mounted.
ORA-03113: end-of-file on communication channel
Process ID: 19925
Session ID: 96 Serial number: 3

报了03113错误

[oracle@yoo ~]$ oerr ora 03113
03113, 00000, "end-of-file on communication channel"
// *Cause: The connection between Client and Server process was broken.
// *Action: There was a communication error that requires further investigation.
//          First, check for network problems and review the SQL*Net setup.
//          Also, look in the alert.log file for any errors. Finally, test to
//          see whether the server process is dead and whether a trace file
//          was generated at failure time.

就查了下日志，有如下关键信息：

ORA-19815: WARNING: db_recovery_file_dest_size of 4070572032 bytes is 100.00% used, and has 0 remaining bytes avail
able.

<txt>Errors in file /usr/local/oracle/diag/rdbms/hiboxbi/hiboxBI/trace/hiboxBI_arc1_19938.trc:
ORA-16038: log 2 sequence# 5651 cannot be archived
ORA-19809: limit exceeded for recovery files
ORA-00312: online log 2 thread 1: '/usr/local/oracle/oradata/HIBOXBI/onlinelog/o1_mf_2_71qg20vh_.log'
ORA-00312: online log 2 thread 1: '/usr/local/oracle/flash_recovery_area/HIBOXBI/onlinelog/o1_mf_2_71qg21kq_.l
og'
</txt>
</msg>
<msg time='2013-11-27T13:43:03.116+08:00' org_id='oracle' comp_id='rdbms'

很明显了，db_recovery空间满了，解决办法有2个（增加空间大小或者清理过期的归档日志），这里采用了前者，问题解决。

SQL> startup mount;
ORACLE instance started.

Total System Global Area 6747725824 bytes
Fixed Size		    2213976 bytes
Variable Size		 5234493352 bytes
Database Buffers	 1476395008 bytes
Redo Buffers		   34623488 bytes
Database mounted.
SQL> show parameter db_recovery_file_dest_size;

NAME				     TYPE	 VALUE
------------------------------------ ----------- ------------------------------
db_recovery_file_dest_size	     big integer 3882M
SQL> alter system set db_recovery_file_dest_size=8G scope=both;

System altered.

SQL> start^H^H^H^H^H
SP2-0310: unable to open f.sql"
SQL> alter database open;

Database altered.

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