User's Guide

Appendix C. Using DCE Directory Services

With DCE Cell Directory Services (CDS), you can store server information in CDS rather than having to store server information on each client. At present, this is supported for DB2 Universal Database V5.0 clients and DB2 Connect Enterprise Edition V5.0 on AIX, other supported UNIX operating systems, and OS/2.
Note: If you want to use DCE directory services support in DB2 Connect to connect to DB2 for MVS/ESA over SNA connections, then you must apply the DB2 for MVS/ESA PTF UN73393 that supports the use of DB2DRDA as the name of the remote transaction program name (RTPN).

If you want to use a DCE directory, you must create the following:

The database object, which contains information about a database
The database locator object, which contains information about the connection between remote clients and the DB2 Connect workstation
The routing information object, which matches database objects to database locator objects

For each DRDA server database that you will access, before creating these objects, you should:

Make sure that the following DCE attributes have been added to the cds attributes file on the workstation from which you created the objects. On an AIX system, the filename is /etc/dce/cds_attributes. On an OS/2 system, the filename is x:\opt\dcelocal\etc\cds_attr, where x: is the drive name.

   1.3.18.0.2.4.30 DB_Comment                 char
   1.3.18.0.2.4.31 DB_Communication_Protocol  char
   1.3.18.0.2.4.32 DB_Database_Protocol       char
   1.3.18.0.2.4.33 DB_Database_Locator_Name   char
   1.3.18.0.2.4.34 DB_Native_Database_Name    char
   1.3.18.0.2.4.35 DB_Object_Type             char
   1.3.18.0.2.4.36 DB_Product_Name            char
   1.3.18.0.2.4.37 DB_Product_Release         char
   1.3.18.0.2.4.38 DB_Target_Database_Info    char
   1.3.18.0.2.4.39 DB_Authentication          char
   1.3.18.0.2.4.63 DB_Principal               char

Make sure you have logged into DCE with sufficient authority to create the objects. The following DCE command can be used to login on a UNIX system:
```
   dce_login principal-id password
```
The following DCE command can be used to login on an OS/2 system:
```
   dcelogin principal-id password
```

Note:

Before you can connect to databases using these objects, you should also configure communications on the DRDA server and workstations. This is described in DB2 Connect Enterprise Edition Quick Beginnings, and DB2 Connect Personal Edition Quick Beginnings.

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