问题
I have installed sqlplus based on instruction given here
sqlplus 'username/password@(DESCRIPTION=(ADDRESS=(PROTOCOL=TCP)(HOST=192.168.0.100)(PORT=1521))(CONNECT_DATA=(SID=ORCL)))'
This is giving me error
SQL*Plus: Release 11.2.0.4.0 Production on Fri Jul 10 16:10:38 2015
Copyright (c) 1982, 2013, Oracle. All rights reserved.
ERROR:
ORA-21561: OID generation failed
Enter user-name:
What is the solution for this problem?
PS: I have already added hostname and hosts have already have value.
回答1:
Append the name of your server to the hosts file.
If your /etc/hosts file looks like this:
127.0.0.1 localhost localhost.localdomain
It should be changed to:
127.0.0.1 localhost localhost.localdomain hostname
hostname can be obtained from the command "hostname".
回答2:
If you are using Mac add local computer name to your 127.0.0.1 in /etc/hosts
It will be like
127.0.0.1 localhost <local_computer_name>
Way to find local computer name
System Preferences>Sharing(search for it if you cant find) on the top you can see your local computer name
or you can use "hostname" command to get local computer name
回答3:
This issue can also be cause by wrong permissions on the /etc/hosts file. If it is not readable for the Oracle uid, the errors will show.
Make sure your /etc/hosts is readable by everybody:
$ ls -l /etc/hosts
-rw-r--r-- 1 root system 7446 Mar 28 23:03 /etc/hosts
$
回答4:
Answer obtained here.
1 - Get your hostname:
$ hostname
new-host
2 - Change the contents of /etc/hosts:
$ sudo cat /etc/hosts
127.0.0.1 localhost localhost.localdomain localhost4 localhost4.localdomain
::1 localhost localhost.localdomain localhost6 localhost6.localdomain6
$ sudo nano /etc/hosts
$ sudo cat /etc/hosts
127.0.0.1 localhost new-host
::1 localhost localhost.localdomain localhost6 localhost6.localdomain6
Hope this helps (:
回答5:
look at /etc/sysconfig/network change if needed the hostname
回答6:
try this, don't put single quotes
sqlplus username/password@(DESCRIPTION=(ADDRESS=(PROTOCOL=TCP)(HOST=192.168.0.100)(PORT=1521))(CONNECT_DATA=(SID=ORCL)))
来源：https://stackoverflow.com/questions/31338916/sqlplus-remote-connection-giving-ora-21561