object reference not set to an instance of an object Error

On the same machine can you use Toad or SQL*Plus to connect to your Oracle database?

An Object is an instance of a Class , it is stored some where in memory. A reference is what is used to describe the pointer to the memory location where the Object resides. The message "object reference not set to an instance of an object" means that you are referring to an object the does not exist or was deleted or cleaned up. It's usually better to avoid a NullReferenceException than to handle it after it occurs. To prevent the error, objects that could be null should be tested for null before being used.

if (mClass != null)
{
// Go ahead and use mClass
mClass.property = ...
}
else
{
// Attempting to use mClass here will result in NullReferenceException
}

A NullReferenceException typically reflects developer error and is thrown in the following scenarios:

• Forgotten to instantiate a reference type.
• Forgotten to dimension an array before initializing it.
• Is thrown by a method that is passed null.
• Get a null return value from a method, then call a method on the returned type.
• Using an expression to retrieve a value and, although checking whether the value is null.
• Enumerating the elements of an array that contains reference types, and attempt to process one of the elements.

Hi v-lionel-msft ,

I am trying to connect Oracle Automomus DB (Cloud) to dataflow gen2 in Fabric.

I did all the set up following the MS learning instructions from here

I was able to connect to the DB in my PBI desktop and all worked fine.

I am now trying to connect using DataFlowGen2 to the same db using a Data Gateway and I am getting this message.

"An exception occurred: An error happened while reading data from the provider: 'Object reference not set to an instance of an object.' (Session..."

Any ideas?

Regards

Pedro