ORA-12547错误

http://www.linuxidc.com/Linux/2013-03/81330p3.htm << good http://www.verydemo.com/demo_c158_i6478.html http://down.51cto.com/data/759985 http://blog.csdn.net/aaaaaaaa2000/article/details/7598369 << good $ chmod 6755 $GRID_HOME/bin/oracle The oracle binary for both GRID_HOME/bin and RDBMS ORACLE_HOME/bin should have 6755 permission, eg: -rwsr-s--x   环境是： [oracle@localhost ~]$ uname -a Linux localhost.localdomain 2.6.18-8.el5PAE #1 SMP Fri Jan 26 14:28:43 EST 2007 i686 i686 i386 GNU/Linux 安装的是10.2.0.1 按照文档上发现自己的系统包少了compat-libstdc++-33/compat-libstdc++-296这2个包包，然后使用 [oracle@localhost ~]$ strace   -f -o /tmp/trace.1.log $ORACLE_HOME/bin/sqlplus / as sysdba 发现10336 open("/home/oracle/product/10.2.0/db_1/lib/tls/sse2/libsqlplus.so", O_RDONLY) = -1 ENOENT (No such file or directory) 好多这样的错误，那应该是在安装的时候因为少了包导致的问题，没有办法只能重新relink了

ORA-12547: TNS:Lost Contact From SqlPlus [ID 422173.1]
		修改时间 01-MAR-2012     类型 PROBLEM     状态 PUBLISHED

  In this Document Symptoms Cause Solution References

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Applies to:

Oracle Server - Enterprise Edition - Version: 10.1.0.2 to 11.2.0.2 - Release: 10.1 to 11.2 Linux x86 HP-UX PA-RISC (64-bit) Oracle Solaris on x86 (32-bit) z*OBSOLETE: IBM AIX 4.3 Based Systems (64-bit) Linux x86-64

Symptoms

- Not able to make a local connection. - Getting the following error when trying to connect using Sql*Plus ERROR: ---------------- ORA-12547: TNS:lost contact For example:

$sqlplus / as sysdba SQL*Plus: Release 11.1.0.7.0 - Production on Wed Mar 30 11:59:06 2011 Copyright (c) 1982, 2008, Oracle. All rights reserved. ERROR: ORA-12547: TNS:lost contact

 

Cause

This could be due to

1. to kernel parameters settings
2. Incorrect permissions on the ORACLE executable
3. Insufficient ulimit setting for stack
4. $ORACLE_HOME/rdbms/lib/config.o is 0 bytes
5. Oracle binaries have not been linked correctly
6. A missing $ORACLE_HOME/dbs directory Note that creating an empty dbs directory already solves this error and you can for instance shutdown the instance. However, you will obviously not be able to restart because of the missing parameter file. So, the dbs directory needs to be fully restored.

 

Solution

To implement the solution, please execute the following steps: 1.  This could be due to kernel parameters settings Please check the notes below that provide the required settings for kernel parameters Note 169706.1 Oracle Database on AIX,HP-UX,Linux,MacOSX,Solaris,Tru64 2.  This could be due to incorrect permissions on the ORACLE.exe Optionally, if you collect the OS trace with:

$strace -f -o /tmp/trace.1.log $ORACLE_HOME/bin/sqlplus / as sysdba

You may see some (Permission denied) in the trace.1.log like the following:

21810 open("/oracle/PROD/db/tech_st/11.1.0/admin/PROD_erptest/diag/rdbms/prod/PROD/alert/log.xml", O_WRONLY|O_CREAT|O_APPEND, 0664) = -1 EACCES (Permission denied) ...... 21810 open("/oracle/PROD/db/tech_st/11.1.0/admin/PROD_erptest/diag/rdbms/prod/PROD/trace/alert_PROD.log", O_WRONLY|O_CREAT|O_APPEND, 0664) = -1 EACCES (Permission denied)

The 'ls' command should show permissions 6751 (as follows) Please check permissions by running:

$ cd $ORACLE_HOME/bin $ ls -l oracle

The output should show the correct permission which is:

-rwsr-s--x 1 oracle dba

If not, then please execute the following to correct the permissions:

$ cd $ORACLE_HOME/bin $ chmod 6751 oracle $ ls -l oracle

Please also verify if the following are correct: echo $ORACLE_HOME echo $ORACLE_SID echo $LD_LIBRARY_PATH echo $PATH 3. Check the current ulimit setting for stack ulimit -a Check the install guide for your specific platform and version of Oracle and set the stack appropriately. 4.  Check to ensure the following two files are not 0 bytes:

$ORACLE_HOME/bin/oracle $ORACLE_HOME/rdbms/lib/config.o

If yes, rename the following file:

% cd $ORACLE_HOME/rdbms/lib % mv config.o config.o.bad

Then, relink the oracle binary:

% relink oracle

5. If the above does not resolve I suggest that you shutdown the database and listener and then "relink all" Note 131321.1 How to Relink Oracle Database Software on UNIX

References

NOTE:131321.1 - How to Relink Oracle Database Software on UNIX NOTE:169706.1 - Oracle Database on Unix AIX,HP-UX,Linux,Mac OS X,Solaris,Tru64 Unix Operating Systems Installation and Configuration Requirements Quick Reference (8.0.5 to 11.2) NOTE:555565.1 - Troubleshooting ORA-12547 TNS: Lost Contact NOTE:188149.1 - How to Display and Change UNIX Process Resource Limits NOTE:744512.1 - Ora-12547: Tns:Lost Contact Creating Database After Clean Installation