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Oracle Tips by Burleson

Listener Passwords

The password can be set either by specifying it through the command CHANGE_PASSWORD, or through a parameter in the listener.ora file. We saw how to do that through the CHANGE_PASSWORD command earlier. If the password is changed this way, it should not be specified in the listener.ora file. The password is not displayed anywhere. When supplying the password in the listener control utility, you must supply it at the Password: prompt as shown above. You cannot specify the password in one line as shown below.

LSNRCTL> set password t0p53cr3t
LSNRCTL> stop
Connecting to (DESCRIPTION=(ADDRESS=(PROTOCOL=IPC)(KEY=EXTPROC)))
TNS-01169: The listener has not recognized the password
LSNRCTL>

The password has to be specified on the prompt as follows.

LSNRCTL> set password
Password: Enter t0p53cr3t here; it will not be displayed.
The command completed successfully
LSNRCTL> stop

The other method of setting the password is through the parameter file. In the file listener.ora, insert the following line.

passwords_listener = t0p53cr3t

To specify passwords for other listeners, use the name appended to the word passwords above. For example,

passwords_listener1 = t0p53cr3t

sets the password for listener1. In this method, setting the password has to be passed in one line such as:

LSNRCTL> set password t0p53cr3t

The method of getting a prompt and entering the non-displayed password will not work.

However, when the password is changed in the case where the password is explicitly mentioned in the parameter file, the operation will never be successful.

LSNRCTL> set password manager1
The command completed successfully

LSNRCTL> change_password
Old password:
New password:
Reenter new password:
Connecting to (DESCRIPTION=(ADDRESS=(PROTOCOL=TCP)(HOST=DBDEV1)(PORT=1526)))
TNS-01169: The listener has not recognized the password
LSNRCTL> set password
Password:
The command completed successfully
LSNRCTL> change_password
Old password:
New password:
Reenter new password:
Connecting to (DESCRIPTION=(ADDRESS=(PROTOCOL=TCP)(HOST=DBDEV1)(PORT=1526)))
TNS-01169: The listener has not recognized the password
LSNRCTL>

Regardless of how you enter the password, through a single line or on the prompt, the change will not be successful. To change the password, you have to remove the line passwords_listener in the file listener.ora and then change the password.



 


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