修改$ORACLE_HOME/network/admin/listener.ora(下面是改好的).(曾经按照网上的改法修改后,仍然不能解决此问题,最后只能参照网上的改法,以及 $ORACLE_HOME/network/admin/samples/listener.ora文件的语法规则进行更改后才得以解决此问题)
SID_LIST_LISTENER =
(SID_LIST =
(SID_DESC =
(GLOBAL_DBNAME = orcl)
# (SID_NAME = PLSExtProc)
(ORACLE_HOME = /usr/oracle_db/product/10.2.0/)
(SID_NAME = orcl)
# (PROGRAM = extproc)
)
LISTENER =
(DESCRIPTION_LIST =
(DESCRIPTION =
(ADDRESS = (PROTOCOL = IPC)(KEY = EXTPROC1))
(ADDRESS = (PROTOCOL = TCP)(HOST = localhost.localdomain)(PORT = 1521))
)
)