今天在linux 64位(Linux machine_name 2.4.21-47.ELsmp #1 SMP Wed Jul 5 20:38:41 EDT 2006 i686 i686 i386 GNU/Linux)的机器上安装了oracle客户端后，输入sqlplus命令后报错segmentation fault(段错误)。

查找$ORACLE_HOME/install/make.log中发现有如下报错信息：

/usr/bin/ld: skipping incompatible /usr/lib/gcc-lib/i386-redhat-linux/2.96/libgcc.a when searching for -lgcc

/usr/bin/ld: skipping incompatible /usr/lib/gcc-lib/i386-redhat-linux/2.96/libgcc.a when searching for -lgcc

/usr/bin/ld: warning: i386 architecture of input file `/usr/lib/gcc-lib/i386-redhat-linux/2.96/crtbegin.o' is incompatible with i386:x86-64 output

/usr/bin/ld: warning: i386 architecture of input file `/usr/lib/gcc-lib/i386-redhat-linux/2.96/crtend.o' is incompatible with i386:x86-64 output

mv -f /oracle/product/9.2.0/bin/sqlplus /oracle/product/9.2.0/bin/sqlplusO

mv -f /oracle/product/9.2.0/sqlplus/lib/sqlplus /oracle/product/9.2.0/bin/sqlplus

/bin/chmod 751 /oracle/product/9.2.0/bin/sqlplus

/usr/bin/make -f ins_plsql.mk install ORACLE_HOME=/oracle/product/9.2.0/chmod 755 /oracle/product/9.2.0/bin

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/usr/bin/ld:skippingincompatible/usr/lib/gcc-lib/i386-redhat-linux/2.96/libgcc.awhensearchingfor-lgcc

/usr/bin/ld:skippingincompatible/usr/lib/gcc-lib/i386-redhat-linux/2.96/libgcc.awhensearchingfor-lgcc

/usr/bin/ld:warning:i386architectureofinputfile`/usr/lib/gcc-lib/i386-redhat-linux/2.96/crtbegin.o' is incompatible with i386:x86-64 output

/usr/bin/ld: warning: i386 architecture of input file `/usr/lib/gcc-lib/i386-redhat-linux/2.96/crtend.o'isincompatiblewithi386:x86-64output

mv-f/oracle/product/9.2.0/bin/sqlplus/oracle/product/9.2.0/bin/sqlplusO

mv-f/oracle/product/9.2.0/sqlplus/lib/sqlplus/oracle/product/9.2.0/bin/sqlplus

/bin/chmod751/oracle/product/9.2.0/bin/sqlplus

/usr/bin/make-fins_plsql.mkinstallORACLE_HOME=/oracle/product/9.2.0/chmod755/oracle/product/9.2.0/bin

该报错信息是因为在/usr/bin目录下的gcc/g++ compilers是一个文件，引起了在link的时候错误编译。我们可以采用如下的方式解决：

1. cd /usr/bin (as root)

2. mv gcc gcc.script

3. mv g++ g++.script

4. ln -s gcc32 gcc

5. ln -s g++32 g++

6. login as oracle software owner (make sure environment is correct)

7. cd $ORACLE_HOME/bin

8. relink all

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1.cd/usr/bin(asroot)

2.mvgccgcc.script

3.mvg++g++.script

4.ln-sgcc32gcc

5.ln-sg++32g++

6.loginasoraclesoftwareowner(makesureenvironmentiscorrect)

7.cd$ORACLE_HOME/bin

8.relinkall

参考：

Segmentation Fault When Execute Sqlplus, Oracle, Lsnrctl After New/Patchset Install (Doc ID 316746.1)