Stepping through your PL/SQL code is fun – but often you want to be able to ‘jump to’ a specific iteration of a loop or maybe when a certain condition evaluates to true.

Wait – how do I get started using the debugger??? Read this!.

Tip: Click in the gutter to add a breakpoint.

By default a breakpoint will always ‘break’ the execution. This is assuming your breakpoint is on an EXECUTABLE line. If you place a breakpoint in a comment, there’s nothing for the database to execute, so nothing to ‘break’ execution.

‘Condition’ and/or ‘Passes’ optionally allow you to define when the breakpoint will be honored.

If you hover over the breakpoint, you can add your conditions and passcounts there. Or you can use the breakpoints panel. I prefer the mouse hover, it’s faster and no navigation required!

I have my debugger panel docked to the bottom of my desktop, but you can put it anywhere!

So on my line 11 (executable line 8), if the local ‘names’ pl/sql variable evaluates to that string at that point in the Call Stack, the execution will pause.

An important note: the variable name must be in UPPERCASE. The database tracks these identifiers in the system in UPPERCASE. So for example, these conditions –

names = ‘Something’ won’t work but
NAMES = ‘Something’ will work.

The flags/checkboxes are pretty self-explanatory, but ‘Beep’ will play your OS notification sound, and ‘Log Stack’ will write a line to the debugger panel.

Note that Y is another local pl/sql variable –

As the breakpoint is tripped, it writes this line to the debugger output panel. Y is equal to 107.

What is sounds/looks like when it ‘breaks’

The breakpoint gutter item has a context menu popup and I can see the condition evaluation tied to the breakpoint.

Or, if I have a passcount assigned to my line, say I don’t want to stop until this line has been executed 5 times…
Note the big RED arrow in the Gutter, this is the line that’s ABOUT to be executed when we say ‘Step…’

You’ll see that I’ve asked the EMPLOYEE.ID to be logged, and I’ve put that in UPPERCASE into the breakpoint expression area.

A few more rules:

  • Complex types are not supported
  • Numbers, varchars, and booleans should work
  • Functions are not supported

I’ll have some more exciting debugger news once version 20.2 of SQL Developer is released (June’ish) – so stay tuned!


I'm a Master Product Manager at Oracle for Oracle SQL Developer. My mission is to help you and your company be more efficient with our database tools.

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