Installation Issues
The complete list of files required to install SQL DMO and SQL Namespace listed in
Appendix A were taken from the Redist.txt file distributed with SQL Server. Pay
special attention to the following instructions about the placement and registration
of some of the key library files:
Installation Notes for Distributed Management Objects (DMO)
The sqldmo.dll file must be registered using the regsvr32.exe utility.
Example: regsvr32 \mssql7\binn\sqldmo.dll)
The sqlwoa.dll file should reside in the system folder
(i.e., \winnt\system32 or \windows\system).
Installation Notes for SQL Namespace (SQLNS) Files
The following files must be registered using the regsvr32.exe utility:
sqlns.dll
sqllex.dll
Example: regsvr32 \mssql7\binn\sqlns.dll
It has been my experience that these instructions need to be followed exactly.
Placing even a single file in the wrong directory or forgetting to register any
of the above mentioned files will cause a failure when trying to instantiate a
SQL Namespace object. It seems that SQL DMO is more forgiving, but I still
suggest that you distribute these components exactly as suggested by Microsoft.
In Summary
The Microsoft Data Engine (MSDE) provides a robust alternative for desktop
applications currently using the JET database, file-server option. By designing
applications for MSDE you pave the way for a more painless, hassle free upsize
to SQL Server when that time comes. Thanks to the SQL DMO and SQL Namespace COM
libraries, developers now have the ability to include all the administrative
utilities necessary for your client to manage the database without requiring
years of training or hours of coding.
In a future article, I will discuss what is required to perform a remote,
unattended install of the MSDE database engine on a client machine.
See All Articles by Columnist Danny Lesandrini
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