How to bypass the password settings of the oracle listener and use oraclelistener

How to bypass the password settings of the oracle listener and use oraclelistener
Zookeeper

How to bypass the password settings for oracle listening:

1. Find the pid of the listening process and kill it.
Ps-ef | grep tns

[Oracle @ lixora admin] $ ps-ef | grep tns
Root 9 2 0 Jul11? 00:00:00 [netns]
Oracle 29668 1 0? 00:00:00/oracle/bin/tnslsnr LISTENER-inherit
Oracle 29677 29487 0 00:00:00 pts/1 grep tns

Kill-9 pid

Kill-9 29668

2. Replace the original listener. ora file.

3. Start the listener.

Oracle listener password and listener Security

Many people know that the Oracle listener has always had a security risk. If security measures are not set, users who can access the listener can close the listener remotely.

Example:

D: \> lsnrctl stop eygle

LSNRCTL for 32-bit Windows: Version 10.2.0.3.0-Production on-2007 10:02:40

Copyright (c) 1991,200 6, Oracle. All rights reserved.

Connecting to (DESCRIPTION = (ADDRESS = (PROTOCOL = TCP) (HOST = 172.16.33.11) (PORT = 1521 ))
(CONNECT_DATA = (SERVICE_NAME = eygle )))
Command executed successfully

You can find that the default listener log cannot record the operation address at this time:

No longer listening on: (DESCRIPTION = (ADDRESS = (PROTOCOL = tcp) (HOST = 172.16.33.11) (PORT = 1521 )))
28-NOV-2007 09:59:20 * (CONNECT_DATA = (CID = (PROGRAM =) (HOST =) (USER = Administrator) (COMMAND = stop)
(ARGUMENTS = 64) (SERVICE = eygle) (VERSION = 169870080) * stop * 0

To ensure the security of the listener, you are advised to set a password for the listener:

[Oracle @ jumper log] $ lsnrctl

Linux: Version 9.2.0.4.0-Production on 28-NOV-2007 10:18:17

Copyright (c) 1991,200 2, Oracle Corporation. All rights reserved.

Welcome to LSNRCTL, type "help" for information.

LSNRCTL> set current_listener listener
Current Listener is listener
LSNRCTL> change_password
Old password:
New password:
Reenter new password:
Connecting to (DESCRIPTION = (ADDRESS = (PROTOCOL = TCP) (HOST = 172.16.33.11) (PORT = 1521 )))
Password changed for listener
The command completed successfully
LSNRCTL> set password
Password:
The command completed successfully
LSNRCTL> save_config
Connecting to (DESCRIPTION = (ADDRESS = (PROTOCOL = TCP) (HOST = 172.16.33.11) (PORT = 1521 )))
Saved LISTENER configuration parameters.
Listener Parameter File/opt/oracle/product/9.2.0/networ ...... the remaining full text>

Oracle does not have a listener, and listener and tnsnames services are configured.

DEMO =
(DESCRIPTION =
(ADDRESS_LIST =
(ADDRESS = (PROTOCOL = TCP) (HOST = 172.22.12.33) (PORT = 1521 ))
)
(CONNECT_DATA =
(SERVER = DEDICATED)
(SERVICE_NAME = demo)
)
)

Change SERVICE_NAME in to the same as the SID in the listener, that is, SERVICE_NAME = ORCL;

If not, tnsping will take a look at the results.