■ Table 3-6 describes the environment variables used to enable and control tracing.
Table 3-6. Environment Variables for Tracing <Correlation#> <Timestamp> <CurrentThreadName>
<Object Address> <ObjectName.MethodName> ENTER (or EXIT)Argument #1 : <Argument#1 Value>Argument #2 : <Argument#2 Value>Correlation# is a unique number that can be used to match ENTER and EXIT entries for the same method call in an application.Value is the hash code of an object appropriate to the individual function calls.All DataDirect Connect for ADO.NET data providers install a set of PerfMon counters that let you tune and debug applications that use the data provider. The data provider’s counters are located in the Performance Monitor under a category name, for example, DataDirect Oracle ADO.NET Data Provider.NOTE: If you have the DataDirect Connect for .NET 2.2 data providers installed on the same machine, those data provider’s counters are located in the Performance Monitor under a provider-specific category name, for example, DataDirect Oracle .NET Data Provider.Table 3-7 describes the counters that you can use to tune connections for your application.
Table 3-7. PerfMon Counters For additional information about using performance statistics, refer to the DataDirect Connect Series for ADO.NET Troubleshooting Guide.
■ Network layer items retrieve values associated with network activities, such as the number of bytes and packets that are sent and received and the length of time the data provider waited for replies from the server.
■ Aggregate items return a calculated value, such as the number of bytes sent or received per round trip to the server.
■ Row disposition statistical items provide information about the time and resources required to dispose of rows not read by the application.
■ Statement statistical items return values that pertain to the number of statements and stored procedures that have been executed.
■ Statement cache statistical items return values that describe the activity of statements in a statement cache (see “Using Statement Caching” for more information on using the statement cache).For additional information about the supported statistical items and using performance statistics, refer to the DataDirect Connect Series for ADO.NET Troubleshooting Guide.