PLSQL Developer配置，出现“ORA-12154: TNS:无法解析指定的连接标识符”

在oracle客户端中编辑配置文件tnsnames.ora

szpicc161 =

(DESCRIPTION =

(ADDRESS = (PROTOCOL = TCP)(HOST = IP)(PORT = 1521))

(CONNECT_DATA =

(SERVER = DEDICATED)

(SERVICE_NAME = SID)

)

)

szpicc163 =

(DESCRIPTION =

(ADDRESS = (PROTOCOL = TCP)(HOST = IP)(PORT = 1521))

(CONNECT_DATA =

(SERVER = DEDICATED)

(SERVICE_NAME = SID)

)

)

登陆出现 出现“ORA-12154: TNS:无法解析指定的连接标识符”

用PLSQL Devloper登录时，点击取消，进入PLSQL
Developer主界面，菜单Tools-Preferences，在设置窗口中，选择Oracle-Connection，对应设置窗口中，找到Oracle Home，选择OraDb10g_home1，保存设置，重新登录PLSQL
Developer即可