Creating the Database Administrator User - Teradata Database - Teradata Vantage NewSQL Engine

1. From an administrative client, log on as user DBC.
2. Create the database administrator as follows:

   Field	Description
   User Name	Required. The name of the database administrator user. All administrative procedures in this publication use the name DBADMIN for the principal administrator.
   Owner	The owner of user DBADMIN, which is DBC.
   Permanent Space	Required. The space in bytes that contains all objects that user DBADMIN creates or owns. Perm space can also be specified with a constant expression resulting in a numeric value in bytes. This allows you to specify perm space per AMP, which is useful when porting applications from a smaller test system to a production system. See the next example. Because user DBADMIN will create and own nearly all Teradata databases and tables, assign it the majority of space on the system. Recommendation: 60-65% of available system (DBC) space.
   Password	Required. The temporary password for DBADMIN. Recommendation: Any simple password will work that follows the default system password controls and site policy. Each user is prompted to change the temporary password to a permanent, private password at first logon. Be sure to review the default password control values to determine whether they conform to your site security requirements. For information on password control options, see Teradata Vantage™ NewSQL Engine Security Administration, B035-1100.
   Spool Space	Optional. The spool space specification is only a limit to the amount of space available for intermediate query results or formatted answer sets to queries and volatile tables. The system borrows spool space for a user from unused permanent space anywhere in the system. Spool space can also be specified with a constant expression resulting in a numeric value in bytes. This allows you to specify spool space per AMP, which is useful when porting applications from a smaller test system to a production system. See the example below. Recommendation: Spool space specification is not normally needed. Spool is already allocated in AdminProfile.
   Default Database	Optional. The user or database containing the space in which the Teradata Database stores or searches for new or target objects unless a different database is specified in the transaction SQL. Recommendation: Specify DBADMIN.
   FALLBACK	Optional. Specification of FALLBACK automatically creates a duplicate of each table stored in the user space, in addition to the duplicates already created by disk mirroring, to which the system can revert in the event of a failure. You cannot use the NO FALLBACK option and the NO FALLBACK default on platforms optimized for fallback.
   Profile	Required. The name of the profile in which the user has membership. A user can be a member of only one profile. Recommendation: Enter AdminProfile, the profile created for user DBADMIN in Creating the Database Administrator Profile.

For example:

CREATE USER "DBADMIN" FROM "DBC"
AS PERM = 2e5 * (hashamp() + 1)
PASSWORD =  "temp" 
SPOOL =  spool_space 
PROFILE = AdminProfile
STARTUP = ''
NO BEFORE JOURNAL
NO AFTER JOURNAL;

The hashamp() function is a database built-in function that returns the highest AMP number in the system configuration. Because AMP numbers start from zero, (hashamp() + 1) returns the total number of AMPs in the system. The example expression: 2e5 * (hashamp() + 1) means allocate 200,000 bytes on each AMP for perm or spool space for the user or database.

Keep the client application open for use in the Granting Database Privileges to User DBADMIN.

Reference Information

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