tns
- oracle instant client，tnsping，tnsnames.ora和ORACLE_HOME
- windows下 sqlplus / as sysdba 报ora-12560的终极解决方法
- Oracle中tnsping 主机名/Ip 显示TNS-12541: TNS:no listener
- Oracle 11g客户端及PLSQL Developer配置
- ORA-12170: TNS:Connect timeout occurred ORA-06512: at "SYS.DBMS_SNAPSHOT"
- PL/SQL Developer ORA-12154: TNS: 无法解析指定的连接标识符
- linux 下安装mysql
- PL/SQL连接报错
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