Installing Db2 database servers as a non-root user
Most Db2 database products can be installed as a non-root user.
Before you begin
Before you install any Db2 database product as a non-root user, be aware of the differences between root installations and non-root installations, and the limitations of non-root installations. Refer to the Related Links at the end of this topic for details.
- You must be able to mount the installation DVD, or have it mounted for you.
You must have a valid user ID that can be used as the owner of a Db2 instance.
The User ID used for the Instance Owner has the following restrictions and requirements:
- Must be in a primary group other than guests, admins, users, and local
- Can include lowercase letters (a-z), numbers (0-9), and the underscore character ( _ )
- Cannot be longer than 8 characters
- Cannot begin with IBM, SYS, SQL, or a number
- Cannot be a Db2 reserved word (USERS, ADMINS, GUESTS, PUBLIC, or LOCAL), or an SQL reserved word
- Cannot use any User ID with root privilege.
- Cannot include accented characters
- If existing user IDs are specified instead of creating new user IDs, make sure that the user IDs:
- Are not locked
- Have passwords that are not locked
- The hardware and software prerequisites that exist for the product you are installing apply to the non-root user just as they do for root users.
- Ensure that kernel parameters are updated. On Linux®, kernel parameters are managed automatically for root installation but must be updated manually for non-root installations.
- On AIX®, Asynchronous I/O (AIO) must be enabled. Enabling I/O Completion Ports (IOCP) is recommended.
- Your home directory must be a valid Db2 path. Db2 installation paths have the following rules:
- Can include lowercase letters (a-z), uppercase letters (A-Z), and the underscore character ( _ ).
- Cannot exceed 128 characters.
- Cannot contain spaces.
- Cannot contain characters that are other than English characters.
- The path name cannot be a subdirectory of an existing Db2 installation.
- The installation paths cannot be symbolic links.
About this task
You do not need to do anything special to install a Db2 database product as a non-root user, other than being logged in as a non-root user.
To install a Db2 database product as a non-root user:
- Log in as a non-root user
Install your Db2 database product by
using any of the methods available to you.
- The Db2 Setup wizard (GUI installation)
- The db2setup command with a response file (silent installation)Note: Since non-root users cannot choose the directory where Db2 database products are installed, any FILE keyword in your response file is ignored.
Open a new login session to use the non-root Db2 instance after the
product is installed.
Alternatively, you can use the same login session if you set up the Db2 instance environment with $HOME/sqllib/db2profile (Bourne shell and Korn shell) or $HOME/sqllib/db2chsrc (C shell), where $HOME is the non-root user's home directory.