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VC++ ODBC connection-how to open the database connection globally??

Posted on 2002-07-21
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Last Modified: 2013-11-20
I've used the VC++ wizard to connect to the database and generated some classes. Understand that each time I want to query a table, I have to call the Open(),OpenDataSource(), and OpenRowset() functions, which will open the database connection and fetch the rowset. When finished using the table, I will call Close() to close the table as well as the database connection. My question is, I don't want to close the database connection, I want the connection remain opened so next time when I query the table or other table (class) in the same database, I don't have to open the database connection again (which will take some time if I reopen the database connection).

I used to move the CSession m_session to a global variable, but it crashes when I exit the function!!
so how can I make the database connection to a global object. One thing maybe I should mention, I'm writing dll, not exe.
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Question by:eugeneng
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cediger earned 300 total points
ID: 7169343
I have a class that is derived from CDatabase that I use for my database connection.  I call the CDatabase::OpenEx() function to establish the connection.  

I then create another class derived from CRecordset to hold the query data.  This is done using the Classwizard.  I open the recordset using an SQL statement, then process the record(s).  I then close the recordset, not the database.

I close the database once I am finished collecting all the information.

Hope this helps,
Cameron
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