Step1: Check logs
|Debug logs||Audit Trails|
|Records||Records automated actions and results generated by end user or code||Tracks configuration changes by Salesforce user in the Org|
|Example||Apex trigger actions, workflow, validation rules||Create/updates happened on workflows, validation rule, sharing rules, classes etc|
Debug Logs: Will provide you information what actions are getting performed and in which order
Audit Trails: Helpful to find out it some newly made org changes has broken the functionality
Step 1: System Debugs
Debug log recording in Setup is turned on for your User via: Setup > Monitoring > Debug Logs. See here for more information.
I would place temporary debug statements such as
System.Debug('>>>> the value of x is ' + x);
within my code to make sure that the code is executing the way I think its working. Individual SObjects, Maps of SObjects and Lists of SObjects can all be appended and that shows you all populated SObject fields.
The >>>> is a unique string that usually doesn’t appear anywhere else in the log files. This allows me to quickly find my debug output. (Logs are truncated after 2M bytes of output – there are workarounds for this.)
Step 2: Use the Developer Console
The Developer Console is a great tool for debugging. You do the following things (and more) with the developer console
- View Logs – This is another way of viewing debug outputs.
- Execute SOQL – This can be used to verify that the SOQL in your code is returning the correct information
- Execute Anonymous – Apex code can be run directly from the dev console
Log lines are included in units of code and indicate which code or rules are being executed. Log lines can also be messages written to the debug log. For example:
Log lines are made up of a set of fields, delimited by a pipe (|).
The format is:
· timestamp: Consists of the time when the event occurred and a value between parentheses. The time is in the user’s time zone and in the format HH:mm:ss.SSS. The value in parentheses represents the time elapsed in nanoseconds since the start of the request. The elapsed time value is excluded from logs reviewed in the Developer Console when you use the Execution Log view. However, you can see the elapsed time when you use the Raw Log view. To open the Raw
Log view, from the Developer Console’s Logs tab, right-click the name of a log and select Open Raw Log.
· event identifier: Specifies the event that triggered the debug log entry (such as SAVEPOINT_RESET or VALIDATION_RULE). Also includes any additional information logged with that event, such as the method name or the line and character number where the code was executed.
Events: · EXECUTION_STARTED · EXECUTION_FINISHED · CODE_UNIT_STARTED · CODE_UNIT_FINISHED · METHOD_ENTRY · METHOD_EXIT · CONSTRUCTOR_ENTRY · CONSTRUCTOR_EXIT · SOQL_EXECUTE_BEGIN · SOQL_EXECUTE_END · SOSL_EXECUTE_BEGIN · SOSL_EXECUTE_END · CALLOUT_REQUEST · CALLOUT_RESPONSE · FATAL_ERROR
Step 3: Explain like I’m five
Simplest meaning of it is “Explain a complicated subject in a way five years old can understand.” Try to explain your code stepwise to yourself or someone else(Dry Run). A lot of the time you figure out the problem when you are explaining the code to someone else. (If exceptions are involved, take a look at your code at the line numbers reported and consider what could have generated the exception.)
Step 4: Create a Unit Test
A unit test is a great way to figure out what is going on with a piece of code. It allows you to:
- Execute your code in an environment with no other data
- Create test data that you can use over and over again.
- Use asserts to check your code
e.g. System.assert(contacts.size() > 0); System.assertEquals(expectedX, actualX);
Step 5: Take a break
Sometimes taking a break helps to refresh your mind and allows you to take a look at the problem from a different angle. This has really helped in most of the time. If you don’t think you have enough time to take very short breaks you’re probably spending a lot of time doing things that aren’t productive. It’s important to take a step back and ask “Am I doing working in correct direction?”
Step 6: Ask for help
If you have done all the steps above and reached this point then you most likely need help. This is where a colleague or stack exchange come in. Make sure when asking a question that you clearly state your problem, provide enough information to make it understandable to others and if you are providing a code sample make sure that it is well formatted.