1.连接数据库时候报错
[ora10g@dbsvr dbs]$ sqlplus "sys/oracle@test as sysdba"
SQL*Plus: Release 10.2.0.4.0 - Production on Sun Jun 14 16:59:39 2009
Copyright (c) 1982, 2007, Oracle. All Rights Reserved.
ERROR:
ORA-28547: connection to server failed, probable Oracle Net admin error
2。查看监听状态
[ora10g@dbsvr admin]$ lsnrctl status
LSNRCTL for Linux: Version 10.2.0.4.0 - Production on 14-JUN-2009 17:02:15
Copyright (c) 1991, 2007, Oracle. All rights reserved.
Connecting to (DESCRIPTION=(ADDRESS=(PROTOCOL=TCP)(HOST=192.168.0.10)(PORT=1521)))
STATUS of the LISTENER
------------------------
Alias LISTENER
Version TNSLSNR for Linux: Version 10.2.0.4.0 - Production
Start Date 14-JUN-2009 16:59:04
Uptime 0 days 0 hr. 3 min. 11 sec
Trace Level off
Security ON: Local OS Authentication
SNMP OFF
Listener Parameter File /ora10g/app/product/10.2.0/db_1/network/admin/listener.ora
Listener Log File /ora10g/app/product/10.2.0/db_1/network/log/listener.log
Listening Endpoints Summary...
(DESCRIPTION=(ADDRESS=(PROTOCOL=tcp)(HOST=192.168.0.10)(PORT=1521)))
(DESCRIPTION=(ADDRESS=(PROTOCOL=ipc)(KEY=EXTPROC0)))
Services Summary...
Service "test" has 2 instance(s).
Instance "test", status UNKNOWN, has 1 handler(s) for this service...
Instance "test", status READY, has 1 handler(s) for this service...
Service "testXDB" has 1 instance(s).
Instance "test", status READY, has 1 handler(s) for this service...
Service "test_XPT" has 1 instance(s).
Instance "test", status READY, has 1 handler(s) for this service...
The command completed successfully
可以看到监听正常
3。tnsping连接正常
[ora10g@dbsvr admin]$ tnsping test
TNS Ping Utility for Linux: Version 10.2.0.4.0 - Production on 14-JUN-2009 17:02:54
Copyright (c) 1997, 2007, Oracle. All rights reserved.
Used parameter files:
Used TNSNAMES adapter to resolve the alias
Attempting to contact (DESCRIPTION = (ADDRESS = (PROTOCOL = TCP)(HOST = 192.168.0.10)(PORT = 1521)) (CONNECT_DATA = (SERVER = DEDICATED) (SERVICE_NAME = test)))
OK (0 msec)
数据库再次连接正常，可能是实例动态注册的过程，会有一小段时间延迟