若Oracle出现“监听程序当前无法识别连接描述符中请求的服务”这个错误可以按照以下方法解决：
可以通过这个路径找到一个文本文件： oracle\product\10.2.0\db_1\NETWORK\ADMIN\listener.ora 还一个在同路径下的tnsnames.ora文件，这两个文本中的一些信息要是这样的： listener.ora # listener.ora Network Configuration File: F:\oracle\product\10.2.0\db_1\network\admin\listener.ora # Generated by Oracle configuration tools.
SID_LIST_LISTENER = (SID_LIST = (SID_DESC = (SID_NAME = PLSExtProc) (ORACLE_HOME = F:\oracle\product\10.2.0\db_1) (PROGRAM = extproc) ) (SID_DESC = (GLOBAL_DBNAME = orcl) (ORACLE_HOME = F:\oracle\product\10.2.0\db_1) (SID_NAME = orcl) )
)
LISTENER = (DESCRIPTION_LIST = (DESCRIPTION = (ADDRESS = (PROTOCOL = TCP)(HOST = 127.0.0.1)(PORT = 1521)) ) )
出现“监听程序当前无法识别连接描述符中请求的服务”一般是因为缺少了上面中间位置的
(SID_DESC = (GLOBAL_DBNAME = orcl) (ORACLE_HOME = F:\oracle\product\10.2.0\db_1) (SID_NAME = orcl) ) 只要把它加在上面就ＯＫ了！！！！！！！！！！！！！
tnsnames.ora # tnsnames.ora Network Configuration File: F:\oracle\product\10.2.0\db_1\network\admin\tnsnames.ora # Generated by Oracle configuration tools.
ORCL = (DESCRIPTION = (ADDRESS = (PROTOCOL = TCP)(HOST = 127.0.0.1)(PORT = 1521)) (CONNECT_DATA = (SERVER = DEDICATED) (SERVICE_NAME = orcl) ) )
EXTPROC_CONNECTION_DATA = (DESCRIPTION = (ADDRESS_LIST = (ADDRESS = (PROTOCOL = IPC)(KEY = EXTPROC1)) ) (CONNECT_DATA = (SID = PLSExtProc) (PRESENTATION = RO) ) )