win平台报ORA-15055 ORA-21561错误处理—增加SharedSection值

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标题：win平台报ORA-15055 ORA-21561错误处理—增加SharedSection值

作者：惜分飞©版权所有[未经本人同意,不得以任何形式转载,否则有进一步追究法律责任的权利.]

有一套win环境的rac，不定期的异常，alert日志经常报ORA-15055 ORA-21561错误,经过分析是由于win默认的Desktop Heap Size值太小导致该问题,以此提醒各位win平台跑oracle 的朋友注意。
alert日志报错

  Current log# 6 seq# 1820 mem# 0: +DATA/rac/onlinelog/group_6.3110.876059421
Thread 2 advanced to log sequence 1821 (LGWR switch)
  Current log# 5 seq# 1821 mem# 0: +DATA/rac/onlinelog/group_5.3109.876059417
Mon Jul 06 14:11:34 2015
WARNING: ASM communication error: op 0 state 0x0 (15055)
ERROR: direct connection failure with ASM
WARNING: ASM communication error: op 0 state 0x0 (15055)
ERROR: direct connection failure with ASM
NOTE: Deferred communication with ASM instance
Errors in file D:\APP\ADMINISTRATOR\diag\rdbms\rac\rac2\trace\rac2_arc0_276.trc:
ORA-15055: 无法连接到 ASM 实例
ORA-21561: 生成 OID 失败
ORA-15055: 无法连接到 ASM 实例
ORA-21561: 生成 OID 失败
NOTE: deferred map free for map id 28882
Errors in file D:\APP\ADMINISTRATOR\diag\rdbms\rac\rac2\trace\rac2_arc0_276.trc:
ORA-00313: 无法打开日志组 6 (用于线程 2) 的成员
ORA-00312: 联机日志 6 线程 2: '+DATA/rac/onlinelog/group_6.3110.876059421'
ORA-17503: ksfdopn: 2 未能打开文件 +DATA/rac/onlinelog/group_6.3110.876059421
ORA-15055: 无法连接到 ASM 实例
ORA-21561: 生成 OID 失败
ARCH: Archival stopped, error occurred. Will continue retrying
WARNING: ASM communication error: op 0 state 0x0 (15055)
ERROR: direct connection failure with ASM
WARNING: ASM communication error: op 0 state 0x0 (15055)
ERROR: direct connection failure with ASM
NOTE: Deferred communication with ASM instance
Errors in file D:\APP\ADMINISTRATOR\diag\rdbms\rac\rac2\trace\rac2_arc0_276.trc:
ORA-15055: 无法连接到 ASM 实例
ORA-21561: 生成 OID 失败
ORA-15055: 无法连接到 ASM 实例
ORA-21561: 生成 OID 失败
NOTE: deferred map free for map id 28883
Errors in file D:\APP\ADMINISTRATOR\diag\rdbms\rac\rac2\trace\rac2_arc0_276.trc:
ORA-00313: 无法打开日志组 6 (用于线程 2) 的成员
ORA-00312: 联机日志 6 线程 2: '+DATA/rac/onlinelog/group_6.3110.876059421'
ORA-17503: ksfdopn: 2 未能打开文件 +DATA/rac/onlinelog/group_6.3110.876059421
ORA-15055: 无法连接到 ASM 实例
ORA-21561: 生成 OID 失败

数据库版本

SQL> select * from v$version;
BANNER
--------------------------------------------------------------------------------
Oracle Database 11g Enterprise Edition Release 11.2.0.3.0 - 64bit Production
PL/SQL Release 11.2.0.3.0 - Production
CORE    11.2.0.3.0      Production
TNS for 64-bit Windows: Version 11.2.0.3.0 - Production
NLSRTL Version 11.2.0.3.0 - Production

OS版本

SQL> host systeminfo
主机名:           RAC2
OS 名称:          Microsoft Windows Server 2008 R2 Enterprise
OS 版本:          6.1.7601 Service Pack 1 Build 7601
OS 制造商:        Microsoft Corporation
OS 配置:          独立服务器
OS 构件类型:      Multiprocessor Free
注册的所有人:     Windows 用户

通过查询MOS,发现该问题主要是由于win的SharedSection设置不足导致,而此类问题可能还导致其他错误，如：TNS12531:TNS:cannot allocate memory。

建议：对于Microsoft Windows 平台数据库，数据库版本为Version 11.2.0.1 to 12.1.0.2的系统，根据实际情况适当增加SharedSection大小。

例如：修改\HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Control\Session Manager\SubSystems\: SharedSection=1024,20480,1024。
这里的第二个为交互式的Desktop Heap Size，第三个是非交互式的Desktop Heap Size,我们主要修改第三个值

ORA-21561: OID generation failed故障解决

联系：手机/微信(+86 17813235971) QQ(107644445)

标题：ORA-21561: OID generation failed故障解决

作者：惜分飞©版权所有[未经本人同意,不得以任何形式转载,否则有进一步追究法律责任的权利.]

数据库无法登陆报ORA-21561: OID generation failed错误

[oracle@essc ~]$ sqlplus XIFENFEI/"www.xifenfei.com"@172.16.50.200/orcl
SQL*Plus: Release 11.2.0.4.0 Production on Mon Jun 1 16:52:29 2015
Copyright (c) 1982, 2013, Oracle.  All rights reserved.
ERROR:
ORA-21561: OID generation failed
Enter user-name:
ERROR:
ORA-12545: Connect failed because target host or object does not exist
Enter user-name:
ERROR:
ORA-12545: Connect failed because target host or object does not exist
SP2-0157: unable to CONNECT to ORACLE after 3 attempts, exiting SQL*Plus

主机名无法ping通

[root@essc ~]# ping essc
ping: unknown host essc
[root@essc ~]# hostname
essc
[root@essc ~]# more /etc/hosts
127.0.0.1   localhost localhost.localdomain localhost4 localhost4.localdomain4
::1         localhost localhost.localdomain localhost6 localhost6.localdomain6
172.16.10.11 app1
[oracle@essc ~]$ ifconfig
eth3      Link encap:Ethernet  HWaddr 00:50:56:BB:00:6B
          inet addr:172.16.10.30  Bcast:172.16.10.255  Mask:255.255.255.0
          inet6 addr: fe80::250:56ff:febb:6b/64 Scope:Link
          UP BROADCAST RUNNING MULTICAST  MTU:1500  Metric:1
          RX packets:9597 errors:0 dropped:0 overruns:0 frame:0
          TX packets:4018 errors:0 dropped:0 overruns:0 carrier:0
          collisions:0 txqueuelen:1000
          RX bytes:1549999 (1.4 MiB)  TX bytes:470158 (459.1 KiB)
lo        Link encap:Local Loopback
          inet addr:127.0.0.1  Mask:255.0.0.0
          inet6 addr: ::1/128 Scope:Host
          UP LOOPBACK RUNNING  MTU:16436  Metric:1
          RX packets:164 errors:0 dropped:0 overruns:0 frame:0
          TX packets:164 errors:0 dropped:0 overruns:0 carrier:0
          collisions:0 txqueuelen:0
          RX bytes:11424 (11.1 KiB)  TX bytes:11424 (11.1 KiB)

修改hosts文件
让hosts中含主机名,也就是为了主机名能够ping通

[oracle@essc ~]$ more /etc/hosts
127.0.0.1   localhost localhost.localdomain localhost4 localhost4.localdomain4
::1         localhost localhost.localdomain localhost6 localhost6.localdomain6
172.16.10.11 app1
172.16.10.30 essc

数据库登录测试

[oracle@essc ~]$ sqlplus XIFENFEI/"www.xifenfei.com"@172.16.50.200/orcl
SQL*Plus: Release 11.2.0.4.0 Production on Mon Jun 1 16:56:39 2015
Copyright (c) 1982, 2013, Oracle.  All rights reserved.
Connected to:
Oracle Database 11g Enterprise Edition Release 11.2.0.1.0 - 64bit Production
With the Partitioning, OLAP, Data Mining and Real Application Testing options
SQL>
SQL> exit
Disconnected from Oracle Database 11g Enterprise Edition Release 11.2.0.1.0 - 64bit Production
With the Partitioning, OLAP, Data Mining and Real Application Testing options

具体见官方说明
Ora-21561: OID Generation Failed (Doc ID 1335327.1)

APPLIES TO:
Oracle Net Services - Version 9.2.0.8 to 11.2.0.3 [Release 9.2 to 11.2]
Information in this document applies to any platform.
***Checked for relevance on 14-Jan-2013***
SYMPTOMS
When attempting to connect to the database using SQL*Plus or DBCA,
the following error occurs intermittently:
ERROR
-----------------------
ORA-21561: OID generation failed
CAUSE
This could be caused by not having the host name for the
target database fully qualified in the hosts file.
To verify if you are hitting this issue, the following symptoms should be met:
- ORA-21561: OID generation failed.
- Hosts file has un-fully qualified entry for the target database host:
127.0.0.1 loopback localhost # loopback (lo0) name/address
10.210.9.111 dbhost
In this sample, dbhost is the target db host.
This is reported in an unpublished Bug 12597261:
"ORA-21561 IF HOSTNAME ENVIRONMENT VARIABLE IS NOT FULLY QUALIFIED",
 which should be resolved as of 12G.
SOLUTION
Modify the hosts file to have the fully qualified host names,
by adding the fully qualified domain name to the entry.
127.0.0.1 loopback localhost # loopback (lo0) name/address
10.210.9.111 dbhost.sample.com
Verify that other environment and service handles are properly defined as well.
If this is a Windows environment, please check :
Windows: Connections Fail with ORA-12640 or ORA-21561 (Doc ID 744125.1)

再次建议:修改主机名请修改完全,具体参考：linux上安装oracle10g注意事项中修改主机名部分