Oracle v$system_parameter: A Guide for Database Administrators

Introduction

In this tutorial, discover how to effectively query the “v$system_parameter” in Oracle databases. You’ll learn essential SQL commands to access and manage system parameters that control various Oracle database functions.

This guide is ideal for Oracle DBAs who need to monitor or adjust system settings for optimized database performance. Gain insights into best practices for querying and interpreting the values of critical system parameters in Oracle.

• Oracle v$system_parameter: Displays system-wide parameter settings for the entire database instance.
• Oracle v$parameter: Shows parameter values specific to the current session, allowing session-specific adjustments.
• Key Differences:
  • Scope: v$system_parameter is instance-wide, while v$parameter is session-specific.
  • Usage: Understanding the difference helps in effective database management, optimizing both system stability and session flexibility.

What does Oracle “v$system_parameter” mean?

“Oracle v$system_parameter is the view shows instance level parameters”. How to check v$system_parameter values in Oracle Databases.

For example, Oracle v$system_parameter

Log in and connect to the database as “SYSDBA“.

[huupv@devopsroles ~]$ sudo su - oracle
[oracle@devopsroles ~]$ sqlplus "/as sysdba"

Check value “db_block_size” in Oracle Database.

SYS@DEVOPSROLES > SELECT name, value FROM V$SYSTEM_PARAMETER where name = 'db_block_size';

The output screen terminal

NAME                 VALUE
-------------------- -----
db_block_size        9100

To check value “db_cache_size” in Oracle Database.

SYS@DEVOPSROLES > SELECT name, value FROM V$SYSTEM_PARAMETER where name = 'db_cache_size';

Check value “java_pool_size” in Oracle Database.

SYS@DEVOPSROLES > SELECT name, value FROM V$SYSTEM_PARAMETER where name = 'java_pool_size';

To check value “nls_language” in Oracle Database.

SYS@DEVOPSROLES > SELECT name, value FROM V$SYSTEM_PARAMETER where name = 'nls_language';

Check value “processes” in the Oracle Database.

SYS@DEVOPSROLES > SELECT name, value FROM V$SYSTEM_PARAMETER where name = 'processes';

To check the value “shared_pool_size” in Oracle Database.

SYS@DEVOPSROLES > SELECT name, value FROM V$SYSTEM_PARAMETER where name = 'shared_pool_size';

Conclusion

the article on querying “v$system_parameter” in Oracle, it is essential to understand the power and significance of system parameters in managing and optimizing Oracle database environments.

This guide offers a comprehensive look at how to access and manipulate these settings, providing database administrators with the knowledge needed to ensure efficient database operation.

For further mastery of Oracle system parameters, continue exploring and experimenting with different queries and settings. I hope will this your helpful. Thank you for reading the DevopsRoles page!