HP 3000 Manuals

IMAGE/SQL Administration Guide

Task 9:Detaching a TurboIMAGE/XL Database 

This task describes how to detach a TurboIMAGE/XL database from a
DBEnvironment.

Getting Ready 

Before detaching a TurboIMAGE/XL database, do the following:

   *   Obtain exclusive access to the DBEnvironment before detaching a
       TurboIMAGE/XL database.

   *   Make sure the appropriate SET SQLDBE and SET TURBODB commands have
       been issued.  To check the status of these commands, use the
       DISPLAY OPTIONS command:
___________________________________________
|                                         |
|     >>DISPLAY OPTIONS                   |
|     Current base      :                 |
|     Current SQLDBE    :                 |
|     Echo              : ON              |
|     Command Logging   : ON              |
|     Current Log File  : ATCLOG.SERED.ATC|
|     >>                                  |
___________________________________________

            

   *   If necessary, issue the SET commands.  For example:
______________________________________
|                                    |
|     >>SET SQLDBE PARTSDBE.SERED.ATC|
|     >>SET TURBODB SALES.SERED.ATC  |
|     >>                             |
______________________________________

            

Performing the Task 

Once you have issued the appropriate SET commands, you are ready to
detach the database from the DBEnvironment.  For example:
_____________________________________
|                                   |
|     >>DETACH                      |
|     >>                            |
_____________________________________

            

This command detaches the SALES database from the PartsDBE DBEnvironment.
If SALES is the only database attached to PartsDBE, the ATCINFO file
(DBEnvironmentNameCR) will be deleted.  If PartsDBE is the only
DBEnvironment to which SALES is attached, the SALESTC file will also be
deleted.

Task Reference 

   *   There are several reasons to detach a TurboIMAGE/XL database from
       a DBEnvironment:
          *   If the database is to be restructured.  (This includes
              restructuring with DBChange and other third-party
              restructuring tools.)
          *   If you want to reset all mapping information to default
              values.

   *   All mapped tables, all IMAGE/SQL views based on these tables, and
       all user-created views based on IMAGE/SQL views and tables are
       dropped when the database is detached.

   *   The ATCINFO file (default name DBEnvironmentNameCR) is purged when
       it no longer contains mapping information about any databases.

   *   The DBaseNameTC file is deleted when the database is no longer
       attached to any DBEnvironments.

MPE/iX 5.5 Documentation