ODBC Too Many connections acuxdbc

Question

I have a production API that connect to a cobol database through ODBC. The ODBC driver sometime pop a too many connections error. I don't think I can do much more to close the connection.

Stopwatch stopwatch = Stopwatch.StartNew();
        OdbcConnection con = new OdbcConnection(System.Configuration.ConfigurationManager.ConnectionStrings["LCM"].ConnectionString);
        try
        {
            using (con)
            {
                
                con.Open();
                
                var result = GetProductsFromDB(searchEntities, con, clientID);
                con.Close();
                OdbcConnection.ReleaseObjectPool();
                con.Dispose();
                stopwatch.Stop();
                result.Total = Convert.ToInt32( stopwatch.Elapsed.TotalMilliseconds);
                return result.Data;
            }
        }
        catch (Exception ex)
        {
            OnActionReport(new ReportActionArgs(ex.Message));
            throw;
        }
        finally
        {
            if (con.State != System.Data.ConnectionState.Closed)
            {
                con.Close();
                OdbcConnection.ReleaseObjectPool();
                con.Dispose();
                OnActionReport(new ReportActionArgs("Connection Closed finally"));
            }
        }

When I restart the IIS service the issue clear up and everything work as it should. Does someone have faced this issue with an ODBC driver before?

Answer 1

I finally made a custom connection pool that will chose an available open connection. it's been almost two weeks now without an issue.