Setting Up the SAP DB WebDAV
Service 
A SAP DB-based WebDAV service is installed along during the installation of the SAP DB Web Tools. A SAP DB database instance is used to store all WebDAV-related data, including the Web resources.
Before you can use the WebDAV service, you must set up the connection to the desired database instance.

If you are working with a SAP DB database instance with a software version below 7.4.03.09, you must also load additional catalog information into the database before you set up the WebDAV service (see Inserting the WebDAV Schema).
...
1.
Start the database
instance with the
Database
Manager.
2. Start the SAP DB Web Server.
3.
Call the administration
tool for the SAP DB Web Tools. To do this, open the Web browser and enter the
following URL:
http://<web_server>:<port>/waadmin.wa
4. Choose Session Pools ® WebDAV.
5.
Specify the following
parameters: the name of the database instance, the name of the host on which
the database instance is installed, the name of the
SYSDBA user and
its password.

If you are working with a SAP DB database instance with a software version below 7.4.03.09, instead of the SYSDBA user, use the name of the user with which you inserted the WebDAV schema.
6. If desired, adjust the size of the Pool Size value. This specifies the maximum number of parallel database sessions that the WebDAV service can open.
7. Choose Services ® WebDAV and then Reload Service. The WebDAV service is restarted.
The WebDAV service is now set up with the SAP DB connection. The WebDAV server is automatically started every time the SAP DB Web Server is started.