在安装好oracle数据库后，sqlplus登录数据库发现报错：

ERROR:

ORA-12547: TNS:lost contact

Enter user-name:

参照官方文档（ID：552979.1）给出的建议进行处理：查看文件：

$ ls -ld bin/ora*

-rwsr-s--x 1 oracle dba 0 Aug 15 2005 bin/oracle

-rwxr-xr-x 1 oracle dba 0 Jun 22 2005 bin/oracleO

... and the <$ORACLE_HOME>/rdbms/lib/config.o object file is zero filesize as well ...

$ cd $ORACLE_HOME/rdbms/lib

$ ls -l config*

-rw-r----- 1 oracle dba 255 Jan 18 11:43 config.c

-rw-r----- 1 oracle dba 0 Jan 18 11:53 config.o

发现文件大小均为0

config.o was not generated during the installation, and it will not be re-compiled if it already exists. Remove the zero-length config.o and then re-compile oracle as mentioned below

$ cd $ORACLE_HOME/rdbms/lib

$ rm config.o

$ make -f ins_rdbms.mk config.o ioracle

$ ls -l config*

-rw-r----- 1 oracle dba 255 Jan 18 11:43 config.c

-rw-r--r-- 1 oracle dba 1448 Feb 6 14:56 config.o

$ cd $ORACLE HOME/bin

$ ls -l oracle*

-rwsr-s--x 1 oracle dba 112842648 Feb 6 14:57 oracle

-rwsr-s--x 1 oracle dba 0 Aug 15 2005 oracleO

这下使用sqlplus登录就正常了

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[重庆思庄每日技术分享]-sqlplus登录数据库时报错：ORA-12547

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