冷备份系统后（见Oracle EBS系统整体备份(冷备份) ），然后重启DB Listener和DB没报什么错误，再起通过命令adstrtal.sh apps/apps来启动Apps Server的时候报错

[oracle@bej301441 scripts]$ adstrtal.sh apps/apps
You are running adstrtal.sh version 120.15.12010000.3
adstrtal.sh: Database connection could not be established. Either the database is down or the APPS credentials supplied are wrong.
USAGE:  adstrtal.sh
        adstrtal.sh -secureapps
        adstrtal.sh -nodbchk
adstrtal.sh: exiting with status 1

[oracle@bej301441 mc3yd213_bej301441]$ sqlplus apps/apps@mc3yd213
SQL*Plus: Release 10.1.0.5.0 - Production on Sat Jun 30 03:18:39 2012
Copyright (c) 1982, 2005, Oracle.  All rights reserved.
ERROR:
ORA-12537: TNS:connection closed
Enter user-name:

sqlplus不能连上instance，那么应该是数据库的问题。

ping服务器的IP

C:Documents and Settingsptian>ping 10.182.74.181
Pinging 10.182.74.181 with 32 bytes of data:
Reply from 10.182.74.181: bytes=32 time=229ms TTL=57
Reply from 10.182.74.181: bytes=32 time=230ms TTL=57
Reply from 10.182.74.181: bytes=32 time=230ms TTL=57
Reply from 10.182.74.181: bytes=32 time=228ms TTL=57
Ping statistics for 10.182.74.181:
    Packets: Sent = 4, Received = 4, Lost = 0 (0% loss),
Approximate round trip times in milli-seconds:
    Minimum = 228ms, Maximum = 230ms, Average = 229ms
C:Documents and Settingsptian>

能够ping通，说明网络没问题

SELINUX=disabled，防火墙也是关闭的，不存在防火墙阻挡的问题。

[oracle@bej301441 mc3yd213_bej301441]$ vi /etc/selinux/config
# This file controls the state of SELinux on the system.
# SELINUX= can take one of these three values:
#       enforcing - SELinux security policy is enforced.
#       permissive - SELinux prints warnings instead of enforcing.
#       disabled - SELinux is fully disabled.
SELINUX=disabled
# SELINUXTYPE= type of policy in use. Possible values are:
#       targeted - Only targeted network daemons are protected.
#       strict - Full SELinux protection.
SELINUXTYPE=targeted

tnsping这个instance

C:Documents and Settingsptian>tnsping mc3yd213
TNS Ping Utility for 32-bit Windows: Version 10.1.0.2.0 - Production on 30-6月 -2012 18:14:29
Copyright (c) 1997, 2003, Oracle.  All rights reserved.
Used parameter files:
D:oracleproduct10.1.0Db_1NETWORKADMINsqlnet.ora
Used TNSNAMES adapter to resolve the alias
Attempting to contact (DESCRIPTION = (ADDRESS = (PROTOCOL = tcp) (HOST = bej301441.cn.oracle.com)(PORT = 1522)) (CONNECT_DATA = (SID = mc3yd213)))
OK (770 msec)
C:Documents and Settingsptian>

这是说明服务器端DB Listener已经启动了。

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