1.安装instantclient的相关包：
instantclient-basic-linux-x86-64-11.2.0.2.0.zip 基础包
instantclient-sdk-linux-x86-64-11.2.0.2.0.zip 使用c或perl连接db
instantclient-sqlplus-linux-x86-64-11.2.0.2.0.zip sqlplus
2.设置环境变量
export PATH=/home/loganalysis/perlM/instantclient/instantclient_11_2:$PATH
export ORACLE_HOME=/home/loganalysis/perlM/instantclient/instantclient_11_2
export LD_LIBRARY_PATH=/home/loganalysis/perlM/instantclient/instantclient_11_2
export SQLPATH=/home/loganalysis/perlM/instantclient/instantclient_11_2:${SQLPATH}
export TNS_ADMIN=/home/loganalysis/perlM/instantclient/instantclient_11_2:${TNS_ADMIN}
3.复制tnsnames.ora至/home/loganalysis/perlM/instantclient/instantclient_11_2