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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).<br />
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I used to move the CSession m_session to a global variable, but it crashes when I exit the function!! <br />
so how can I make the database connection to a global object. One thing maybe I should mention, I'm writing dll, not exe. <br />

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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. 


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

Kernel and system programming is the process of creating the software necessary for a computer or device to function and operate other programs. Some operating systems (such as Microsoft Windows) are proprietary, but others, such as the various Linux distributions, are open source.