How to confirm whether the Oracle installation is complete and valid

Title: Method to confirm whether Oracle installation is complete and effective, specific code examples are required

With the development of information technology, database management systems have become an important part of enterprise data management and processing one of the key tools. As the world's leading relational database management system, Oracle is widely used in enterprises. However, a complete and effective Oracle installation is critical to an enterprise's data management and business operations. This article will introduce how to confirm whether the Oracle installation is complete and valid, and provide specific code examples to help administrators check.

1. Confirm whether the Oracle database service starts normally.

First, confirm whether the Oracle database service starts normally. You can check through the following steps:

1. Open the command prompt window (Windows system) or terminal window (Linux system);
2. Enter the following command to check whether the Oracle database service has been started:

net start OracleService[数据库实例名] (Windows系统)

or

ps -ef | grep smon (Linux系统)

If the returned result includes the Oracle database service process, it means that the database service has started normally.

2. Confirm whether the Oracle database connection is successful

Secondly, confirm whether the Oracle database connection is successful. You can check by following the steps:

1. Open SQL*Plus or other database connection tools;
2. Enter the following command to connect to the Oracle database:

sqlplus 用户名/密码@数据库连接名

If If you successfully connect to the database and can query data, the database connection is normal.

3. Check the database instance status

You can check the database instance status through the following SQL statement:

SELECT INSTANCE_NAME, STATUS FROM V$INSTANCE;

If the STATUS field in the returned result displays OPEN, it means the database instance normal operation.

4. Check the database table space

You can check whether the database table space is normal through the following SQL statement:

SELECT TABLESPACE_NAME, STATUS FROM DBA_TABLESPACES;

If the STATUS field in the returned result displays ONLINE, it means The database tablespace is normal.

5. Check database backup

Regular backup is an important means to ensure database security. You can check the database backup status through the following SQL statement:

SELECT
   RECID,
   DB_NAME,
   BACKUP_TYPE,
   COMPLETION_TIME
FROM V$BACKUP_SET;

If the returned result contains the latest backup record and the status is displayed as COMPLETED, the database backup is proceeding normally.

6. Check the database log

The database log records detailed information of database operations, including error logs and operation logs. You can check the database log through the following SQL statement:

SELECT
   NAME,
   LOG_MODE,
   FLASHBACK_ON
FROM V$DATABASE;

If the LOG_MODE field in the returned result displays ARCHIVELOG, and the FLASHBACK_ON field is YES, the database log is normal.

By checking the above steps, you can confirm whether the Oracle installation is complete and effective. Administrators can regularly check the database status to ensure data security and business operation stability. I hope the above content is helpful to readers.

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