How to manage environment variables in DB2

This article will introduce you to the management of environment variables in the DB2 database. In the DB2 database, the DB2 environment variables are managed through the db2set command, I hope this article will help you.

In a DB2 database, the management of environment variables is integrated with the database system. administrators can configure the environment variables of the database without having to know the commands of the Linux operating system.

There are multiple brief registries in the DB2 database, each of which is responsible for specific levels of environment variables. The specific categories include instance-level summary registry, global-level summary registry, and DB2 instance node-level summary registry.

When you understand these brief registries, the most important thing is to understand their priority. This is the same as the environment variables in the operating system. It has user-level and operating system-level environment variables.

Generally, the closer it is to the user, the higher the priority, that is, the proximity principle.

In the DB2 database, the DB2 environment variables in the brief registry are managed through the db2set command. Therefore, the DB2 database administrator must be familiar with the db2set command. In specific operations, the administrator should focus on the following:

1. Meaning of each option.

2. Do you need to restrict the environment variable settings.

3. Differences in environment variables.

4. Operating System permissions are required to change environment variables.