What to do if the oracle user password is wrong

Oracle is an enterprise-level database management system. When using Oracle for data processing and management, we often need to log in to the Oracle database. Then, we enter our username and password to log in. But sometimes, we may encounter the following error message: "ORA-01017: invalid username/password; logon denied" or "ORA-28000: the account is locked". This is usually caused by an incorrect user or password or the account being locked out.

When encountering these error messages when using Oracle, we must first confirm whether the user name and password we entered are correct. In Oracle, usernames and passwords are case-sensitive. If we forget our password, we can try to log in using the system administrator account and change our password.

If we confirm that the username and password we entered are correct but still encounter login errors, it may be because the account has been locked. In Oracle, when a user enters an incorrect password multiple times in a row, the system automatically locks the account to protect data security. At this time we need to use administrator rights to unlock the account. You can unlock it through the following steps:

1. Log in with an administrator account

2. Execute the following command:

   ALTER USER username ACCOUNT UNLOCK;

   Among them, username is the name of the account that needs to be unlocked.

3. Then try to log in to the database again using this account.

In addition, in order to protect the security of the Oracle database, we need to pay attention to the following points:

1. For administrator accounts and ordinary user accounts, strong passwords need to be set, and Change passwords regularly.
2. Limit the maximum number of incorrect logins for each account to prevent malicious password attempts.
3. Shared accounts are prohibited, each user needs to log in with his or her own account.
4. For accounts that have not been used for a long time, they need to be disabled or deleted in time.

This article introduces some common reasons that may lead to incorrect Oracle user passwords and how to solve these problems. By strengthening account management and following security best practices, we can effectively protect the security of Oracle databases.

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