Starting the server instance
You can start the server by using the instance user ID, which is the preferred method, or the root user ID.
Before you begin
About this task
When you start the server by using the instance user ID, you simplify the setup process and avoid potential issues. However, in some cases, it might be necessary to start the server with the root user ID. For example, you might want to use the root user ID to ensure that the server can access specific devices. You can set up the server to start automatically by using either the instance user ID or the root user ID.

If you must complete maintenance or reconfiguration tasks, start the server
in maintenance mode.
Procedure
- Start the server by using the instance user ID.
For instructions, see Starting the server from the instance user ID.
For instructions, see Starting the server from the instance user ID. 
Start the server automatically.
For instructions,
see Automatically starting servers on AIX systems.
For instructions, see Automatically starting servers on Linux systems.- Start the server in maintenance mode.
For instructions, see Starting the server in maintenance mode.