oracle installation password

[Password for Oracle installation]

Oracle is one of the most popular database management systems in the world and is widely used in various enterprise-level applications. When installing Oracle, it is necessary to set a safe and reliable password. This article will introduce how to set the password for Oracle installation.

1. Download and install Oracle database software
   Before installing Oracle, you need to determine the required Oracle version and operating system type, download the corresponding software from the official website, and then install it. The Oracle installation process will not be explained in detail here, only how to set the password.
2. Open the "netca" tool in the Oracle installation directory
   Find the "netca" directory in the Oracle installation directory and open the "netca.bat" tool in it, as shown in the following figure:
3. Create Listener
   Select "Listener Configuration" in the "netca" tool, and then click the "New" button to create a Listener. In the "Password" column of the interface, set the Oracle Root password, as shown in the following figure:
4. Test Listener
   After creating the Listener, you need to test whether it is running normally. You can use the "lsnrctl" command to check, and enter the Oracle Root password you just set, as shown in the following figure:
5. Modify Oracle privileged user password
   When installing Oracle, Oracle creates a privileged user by default "SYS" and "SYSTEM", these two users have the highest authority in Oracle database management. Therefore, the passwords of these two users need to be modified to ensure safety and security.

Log in to Oracle and run the following three lines of commands to modify the passwords of the SYS and SYSTEM users respectively:

ALTER USER SYSTEM identified by "new_password";
ALTER USER SYS identified by "new_password";
ALTER USER SYSMAN identified by "new_password";

6. Configuring Oracle security options
   In order to ensure the security of the Oracle database, we also need to modify some security options.

Find the "Database Configuration Assistant" tool in the Oracle installation directory and open it. Then select the "Modify Configuration" option and select the Oracle database to be modified, as shown in the following figure:

Then in the "Options" interface, select the "Security" tab and set some security options, such as:

• Disable the default SCOTT user associated with the default administrative user SYS
• Disable and delete useless users
• Prohibit the use of weak passwords

7. Apply modifications
   After modifying the above settings, you need to apply these modifications to take effect. Click the "Apply" button, and then enter the Oracle Root password in the prompt box, as shown in the following figure:

At this point, the password setting for the Oracle installation has been completed. During the management and development of Oracle database, passwords must be set strictly in accordance with password requirements, and always maintain a sense of precaution to ensure the security and reliability of the database.

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