ORA-03113 ORA-27103: internal error MMAN (ospid: 21061)

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本文介绍了Oracle数据库在11.1.0.7版本上启动失败的问题，特别是在memory_target设置超过3GB时触发的bug。文章提供了详细的解决方案，包括应用补丁7272646，并调整相关内存参数来解决问题。

SQL> startup
ORA-32004: obsolete and/or deprecated parameter(s) specified
ORACLE instance started.

Total System Global Area 1.0088E+10 bytes
Fixed Size                  2162320 bytes
Variable Size            5301600624 bytes
Database Buffers         4764729344 bytes
Redo Buffers               19697664 bytes
ORA-03113: end-of-file on communication channel
Process ID: 31529
Session ID: 280 Serial number: 3

oracle环境：10.137.5.87
---原因分析：
在oracle的alert日志中报错：
Errors in file /opt/oracle/diag/rdbms/oracle/oracle/trace/oracle_mman_21061.trc:
ORA-27103: internal error
Linux-x86_64 Error: 17: File exists
Additional information: -1
Additional information: 1
MMAN (ospid: 21061): terminating the instance due to error 27103
Instance terminated by MMAN, pid = 21061
Wed Sep 15 10:20:50 2010

这个是oracle的在11.1.0.7上的bug，与我们的参数设置有关系 memory_target 设置超过3G 后会触发此bug，解决方式：
Due to Bug:7272646
This problem is introduced in 11.1.0.7 on 64bit Linux .
In some cases after applying the 11.1.0.7 patch set on 64Bit Linux x86 the instance will not start when
MEMORY_TARGET > 3GB.
Solution
To solve the issue need to do the following :

1.) Download and apply Patch 7272646 available on metalink for Linux x86-64 11.1.0.7
2.) After applying the patch, test with memory_target set > 3GBto verify patch resolves issue

create pfile ='initwsj.ora' from spfile='/dev/vx/rdsk/vgora/lv_spfile';

oracle.__db_cache_size=4764729344
oracle.__java_pool_size=67108864
oracle.__large_pool_size=67108864
oracle.__oracle_base='/opt/oracle'#ORACLE_BASE set from environment
oracle.__pga_aggregate_target=4093640704
oracle.__sga_target=6039797760
oracle.__shared_io_pool_size=0
oracle.__shared_pool_size=1073741824
oracle.__streams_pool_size=0
*.audit_file_dest='/opt/oracle/admin/oracle/adump'
*.audit_trail='db'
*.compatible='11.1.0.0.0'
*.control_files='/dev/vx/rdsk/vgora/lv_ctl01','/dev/vx/rdsk/vgora/lv_ctl02','/dev/vx/rdsk/vgora/lv_ctl03'
*.db_block_size=4096
*.db_domain=''
*.db_name='oracle'
*.db_recovery_file_dest='/opt/oracle/flash_recovery_area'
*.db_recovery_file_dest_size=2147483648
*.diagnostic_dest='/opt/oracle'
*.log_archive_format='%t_%s_%r.dbf'
*.memory_target=10077863936
*.open_cursors=300
*.processes=250
*.remote_listener=''
*.remote_login_passwordfile='EXCLUSIVE'
*.remote_os_authent=TRUE
*.sessions=280
*.undo_tablespace='UNDOTBS1'

目前设置的是10G，需要调整为小于3G,然后打oracle的补丁。

恢复方式：
修改initwsj.ora 中的配置，与内存有关的大小调整memory_target 调整为小于3 G，转换成bit
其他参与也要相应调整或删除
oracle.__db_cache_size=4764729344
oracle.__java_pool_size=67108864
oracle.__large_pool_size=67108864
oracle.__pga_aggregate_target=4093640704
oracle.__sga_target=6039797760
oracle.__shared_io_pool_size=0
oracle.__shared_pool_size=1073741824
oracle.__streams_pool_size=0
然后从initcao.ora启动

sql>startup pfile =initwsj.ora;
启动成功后再恢复spfile
sql>create spfile='/dev/vx/rdsk/vgora/lv_spfile' from pfile='initwsj.ora';
重启oracle