今天想测试点东西，登录测试库；发现实例是关闭的；

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SQL> startup
ORACLE instance started.

Total System Global Area 2722467840 bytes
Fixed Size                  2231472 bytes
Variable Size            1476395856 bytes
Database Buffers         1241513984 bytes
Redo Buffers                2326528 bytes
Database mounted.
ORA-03113: end-of-file on communication channel
Process ID: 23281
Session ID: 1 Serial number: 5


查看日志

SUCCESS: diskgroup ORAARCH was mounted
ARCH: Error 19504 Creating archive log file to '+ORAARCH'
Errors in file /u01/app/oracle/diag/rdbms/xhdb/xhdb1/trace/xhdb1_ora_23565.trc:
ORA-16038: log 5 sequence# 345 cannot be archived
ORA-19504: failed to create file ""
ORA-00312: online log 5 thread 1: '+ORADATA/xhdb/onlinelog/group_5.272.857422319                    '
USER (ospid: 23565): terminating the instance due to error 16038
System state dump requested by (instance=1, osid=23565), summary=[abnormal insta                    nce termination].
System State dumped to trace file /u01/app/oracle/diag/rdbms/xhdb/xhdb1/trace/xh                    db1_diag_23451.trc
Dumping diagnostic data in directory=[cdmp_20141218102056], requested by (instan                    ce=1, osid=23565), summary=[abnormal instance termination].
Instance terminated by USER, pid = 23565


查看(fdisk)查看磁盘都在；切换到grid集群也在运行，asm磁盘组都在；可能是归档空间不够了；把节点1的数据库实例启动到挂载状态下；



SQL> startup mount;
ORACLE instance started.

Total System Global Area 2722467840 bytes
Fixed Size                  2231472 bytes
Variable Size            1476395856 bytes
Database Buffers         1241513984 bytes
Redo Buffers                2326528 bytes
Database mounted.
SQL> archive log list;
Database log mode              Archive Mode
Automatic archival             Enabled
Archive destination            +ORAARCH
Oldest online log sequence     345
Next log sequence to archive   345


SQL> select group_number,name,state,total_mb,free_mb from v$asm_diskgroup;

GROUP_NUMBER NAME                           STATE         TOTAL_MB    FREE_MB
------------ ------------------------------ ----------- ---------- ----------
           1 CRS                            MOUNTED            998        600
           2 ORAARCH                        MOUNTED           8189         11
           3 ORADATA                        CONNECTED        20473      16198



发现是oraarch 归档空间不够了,节点1登录rman,把归档日志删除；在节点1和节点2启动数据库实例，正常；

RMAN> crosscheck archivelog all;

RMAN> delete archivelog all; 


SQL> select group_number,name,state,total_mb,free_mb from v$asm_diskgroup;

GROUP_NUMBER NAME                           STATE         TOTAL_MB    FREE_MB
------------ ------------------------------ ----------- ---------- ----------
           1 CRS                            MOUNTED            998        600
           2 ORAARCH                        CONNECTED         8189       5123
           3 ORADATA                        CONNECTED        20473      16198

SQL> alter database open;

Database altered.





节点2 也能正常打开
[oracle@rac2 ~]$ sqlplus / as sysdba

SQL*Plus: Release 11.2.0.3.0 Production on Thu Dec 18 10:56:54 2014

Copyright (c) 1982, 2011, Oracle.  All rights reserved.

Connected to an idle instance.

SQL> startup
ORACLE instance started.

Total System Global Area 2722467840 bytes
Fixed Size                  2231472 bytes
Variable Size            1191183184 bytes
Database Buffers         1526726656 bytes
Redo Buffers                2326528 bytes
Database mounted.
Database opened.

本文题目：RAC由于归档表空间满而无法启动实例的解决
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