How to view the operation history of an Oracle database

Methods to view operation history: 1. Use Oracle's built-in audit function to record various operations that occur in the database, including login, DDL statements, DML statements, etc.; 2. Use Oracle log files, where Contains various operations that occur in the database, and you can obtain the operation history by viewing the log file; 3. Using Oracle's Flashback function, you can view the operation history of the database at a certain point in time; 4. Use third-party tools, etc.

To view the operation history of Oracle database, you can do it through the following methods:

1. Use Oracle's built-in audit function : Oracle database provides a built-in audit function that can record various operations that occur in the database, including logins, DDL statements, DML statements, etc. You can enable and query audit records through the following steps:

- Enable the audit function: Execute the following statement in the Oracle database to enable the audit function:

ALTER SYSTEM SET AUDIT_TRAIL=db SCOPE=SPFILE;

- Restart the database to make the settings take effect:

     SHUTDOWN IMMEDIATE;
     STARTUP;

- Query audit records: You can use the following statement to query audit records:

SELECT * FROM dba_audit_trail;

2. Use Oracle log files: Oracle database will generate log files, which contain various events that occur in the database. operate. Operation history can be obtained by viewing log files. You can use the following steps to view the log file:

- Determine the location of the log file: Execute the following statement in the Oracle database to determine the location of the log file:

SELECT member FROM v$logfile;

- Use operating system tools to view the log File: Based on the log file location obtained in the previous step, you can use operating system tools (such as cat, tail, etc.) to view the log file content.

3. Use Oracle's Flashback function: Oracle database provides the Flashback function, which can be used to restore the database to a certain point in the past. You can use the Flashback function to view the operation history of the database at a certain point in time. You can use the following steps to use the Flashback function:

- Enable the Flashback function: Execute the following statement in the Oracle database to enable the Flashback function:

ALTER DATABASE FLASHBACK ON;

- Query history: You can use the following statement to query The operation history of the database at a certain point in time:

 SELECT * FROM table AS OF TIMESTAMP TO_TIMESTAMP('yyyy-mm-dd hh24:mi:ss', '时间点');

Where, 'point in time' needs to be replaced with a specific point in time.

4. Use third-party tools: In addition to the above methods, you can also use some third-party tools to view the operation history of the Oracle database. These tools usually provide more convenient and flexible query and analysis functions, and you can choose the appropriate tool to use according to actual needs.

Summary

To view the operation history of the Oracle database, you can use Oracle's built-in audit function, view log files, use the Flashback function, or use third-party tools. . Which method to choose depends on actual needs and circumstances.

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