环境:Oracle 11g R2 + PL SQL Developer + SQL Plus
问题:Oracle主服务和监听器服务已经启动,使用SQL Plus能够正常连接,使用PL SQL Developer连接报次错误:ORA-12514: TNS: 监听程序当前无法识别连接描述符中请求的服务。如图:
解决:
打开H:Oracleproduct11.2.0dbhome_1NETWORKADMIN(不同机器目录可能不同)目录下的listener.ora文件,发现此文件内容如下:
修改成如下内容(注意红色部分的内容):
#listener.ora Network Configuration File:
H:Oracleproduct11.2.0dbhome_1networkadminlistener.ora
#Generated by Oracle configuration tools.
SID_LIST_LISTENER=
(SID_LIST =
(SID_DESC =
(GLOBAL_DBNAME = ORCL)
(ORACLE_HOME =H:Oracleproduct11.2.0dbhome_1)
(SID_NAME = ORCL)
)
(SID_DESC =
(SID_NAME = CLRExtProc)
(ORACLE_HOME = H:Oracleproduct11.2.0dbhome_1)
(PROGRAM = extproc)
(ENVS ="EXTPROC_DLLS=ONLY:H:Oracleproduct11.2.0dbhome_1binoraclr11.dll")
)
)
LISTENER=
(DESCRIPTION_LIST =
(DESCRIPTION =
(ADDRESS = (PROTOCOL = IPC)(KEY =EXTPROC1521))
(ADDRESS = (PROTOCOL = TCP)(HOST =localhost)(PORT = 1521))
)
)
ADR_BASE_LISTENER= H:Oracle
说明:每台电脑的Oracle安装目录和实例名不尽相同,修改此文件的ORACLE_HOME(本机Oracle安装目录)和SID_NAME应该按照你自己的设置。