Some times we get weird issues in
production and some of they are not consistent and canot be
reproduced in development environment.To deal with such issues I am
giving some tips based on my experience.
1)Fist thing we need to do is to check
the application log files and database log tables and see if the
information logged will help us in anyway to understand the root
cause.If the information is not sufficient we can add extra logging
and deploy the latest code to capture more information.
In below method we are capturing empId
for additional information regarding the exceptional scenario.There
are cases issues can be occurred for only particular employee so
empId will help us in understanding the all employee information.
public List<Employee>
GetEmployee(string empId)
{
…............
}
catch
(Exception
exception)
{
var
exMessage = exception.Message + Environment.NewLine
+
exception.StackTrace
+ Environment.NewLine
+ "EmplId:"
+ empId;
Logger.Write(ErrorLogTittle,
exMessage);
}
In GetEmployee method if there is any
exception occurred it will log exception message,StackTrace and also
empId.
StackTrace will help us in identifying
the code file and line no apart from exception details.
Logging transaction details like empId
is very important to find the root cause in some weird cases.
Catching the exceptions and logging the
details in database table and also a text file before displaying the
error to user should be compulsory.
In some scenarios,we might need to add additional logs to
track the work flow.
a)Record processing started
b)Reading employee details
C).....
d)End
This way we can easily identify after
which step the exception occurred.
2)In some scenarios like below
a)If our application is trying to
access remote machines/Network resources.
b)Need some dll's for application
functioning but unable to load.
We can get helpful information to identify the root cause from
Windows event logs.
To check event logs,Open Run dialog box
type and type eventvwr.
Expand Windows Logs
and click on Application.
It will display the list of all
application events.It
will display 3 types of information.They are Information,Warning and
Error.We know where to check right?
I
will try to add more tips later.. :-)
