Release MS Access LDB Lock File After Created It?

I have difficulty in removing the LDB generated by the "CREATE" method of ADOX in the following code segment.Aims: Create (on the fly) a new access database and then export data (says Arena modules) to that newly created database.

Expected: The newly created access database should be able to be used by some external operations, say Access.exe, after the end of the subroutine and without exiting the current VB program.

1) I tested that the "Arena code" do nothing about the create/release of the ldb file.

2) I tested the "Exclusive Mode" in connection string, but the access file is still locked by the vb program.

3) I tested under both inside the VB environment, and directly invoke the generated from Explorer, and same results.

4) Other database formats is not the options to me. (due to Arena export limit)

5) It is not a web app.

Code:

Sub Method1()
Dim logs As New System.Collections.Generic.List(Of String)
Dim arenaApp As Arena.Application = Nothing
Try

[code]....

Platform:

Windows 7 64bit, Office 2010 (32)
VB 2010 express
Lib: MS ADO Ext. 2.8 for DDL and Security