Query oracle parameters

Oracle is a very powerful and widely used relational database management system. Its operation and performance are affected by multiple parameter configurations. In order to obtain the best operating results, we need to set and adjust these parameters. So, how to query Oracle parameters? See below.

The first way: use SQL commands

We can use SQL commands to query Oracle parameters. The specific steps are as follows:

1. Log in to the Oracle database system;
2. Open the SQL command line or use Oracle SQL development tools (such as Toad, SQL Developer, etc.);

3. Enter the following command in the SQL command line window or tool:

   SHOW PARAMETERS;

   This command will list all parameters and configuration values ​​of the current Oracle database.

4. If you only want to query the configuration value of a certain parameter, you can use the following command:

   SHOW PARAMETER parameter name;

   Among them, parameter name is the parameter name you want to query.

For example, if you want to view the configuration value of the SGA_TARGET parameter in the Oracle database, you can enter the following command:

SHOW PARAMETER SGA_TARGET;

The result will return the following information:

NAME TYPE VALUE

---

sga_target big integer 512M

This result indicates that the current configuration value of the SGA_TARGET parameter is 512M.

Second way: Use Oracle Enterprise Manager

Oracle Enterprise Manager is a management tool integrated with the Oracle database system. It contains many useful functions, including querying Oracle parameter configuration. The following are the steps to use Oracle Enterprise Manager to query Oracle parameters:

1. Log in to Oracle Enterprise Manager;
2. Find the "Database" menu and click the "Monitor" menu item;
3. Click the "Database Preferences" link;
4. In the "Database Preferences" page, you can see all parameter configuration information of the current Oracle database.

In this page, you can view the configuration value, description, data type and other information of each parameter. You can also modify these parameters to meet specific needs.

Summary

Querying Oracle parameters can be achieved using SQL commands or tools such as Oracle Enterprise Manager. If you want to know all the parameter configuration information of the current Oracle database, you can use the SHOW PARAMETERS command; if you only want to query the configuration information of a certain parameter, you can use the SHOW PARAMETER command. Of course, if you want to manage and modify the parameter configuration of the Oracle database more conveniently, we recommend using Oracle Enterprise Manager.

The above is the detailed content of Query oracle parameters. For more information, please follow other related articles on the PHP Chinese website!