System.NullReferenceException: Object reference not set to an instance of an object.~~ at Sybase.Data.AseClient1.AseConnection.Open()

Hi All,

We are getting random failures of sessions to the server.

It's an booking system

We are seeing these kind of errors:

System.NullReferenceException: Object reference not set to

an instance of an object.~~ at

Sybase.Data.AseClient1.AseConnection.Open()

More details

ASEClient 15.7 (Sybase.AdoNet4.AseClient 4.157.104.0, Size 6,96MB)

Code

_conexaoSybase = newAseConnection(CONNECTION_STRING_SYBASE);

_conexaoSybase.NamedParameters = false;                   

_conexaoSybase.Open();

Error

1. System.NullReferenceException: Object reference not set to an instance of an object.

   at Sybase.Data.AseClient1.AseConnection.Open()

   at Sybase.Data.AseClient.AseConnection.Open()

   at XYZ.Nucleo.Util.Contexto.Contexto.get_ConexaoSybase()

We then loose all connection on that particular server and have to do a reset to resolve the problem. Any idea on what could be causing this ?

Thanks in advanced!

Daniel Castro