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Design Issue with Database Access

Hi

I have a database that can be accessed at any point in time to retrieve data. The database also periodically gets updated with information from a text file that the program imports.

Is there any nice way to restrict access to the database while the database is been updated and make any other requests wait until it has finished?

Thanks
Adam
0
adam_pedley
Asked:
adam_pedley
1 Solution
 
Nandakumar SakthivelTechnology LeadCommented:

If you want to stop accessing the Tables for the particular table means you can acheive this by using transaction objects
using  "SqlCon.BeginTransaction(IsolationLevel.RepeatableRead)"


       Dim sqlCmd As SqlCommand
       Dim SqlCon As SqlConnection
       Dim trans As SqlTransaction

            SqlCon = New SqlConnection("")
            SqlCon.Open()
            sqlCmd = New SqlCommand
            trans = SqlCon.BeginTransaction(IsolationLevel.RepeatableRead)
            sqlCmd.CommandTimeout = 0
            sqlCmd.Connection() = SqlCon
            sqlCmd.CommandType = CommandType.Text
            sqlCmd.Transaction = trans
     
It is a way called pessimistic locking

http://builder.com.com/5100-6388-1049842.html

Thanks,
Nanda
0

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