DB2 Connect User's Guide

Appendix D. 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. CDS is supported for all DB2 Universal Database clients and DB2 Connect Enterprise Edition on all platforms.
Note: If you want to use DCE Cell 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 host or AS/400 database server that you will access, before creating these objects, you should:

Ensure 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: represents the drive name.
On a Windows 32-bit system: the filename is x:\root\dcelocal\etc\cds_attributes where x: represents the drive name and root represents the directory where you installed DCE.

   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

Ensure you have logged into DCE with sufficient authority to create the objects. The following DCE command can be used to login on a UNIX or Windows 2000 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 host or AS/400 database server and workstations. This information is described in the appropriate Quick Beginnings book.

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