Dumping a database in Hex!

[Norman Dunbar-2]

Yes, I know the subject is a bit weird, but I do have a purpose.

At the moment I'm using hexdump (on Linux) to dump some database pages
and decoding the hex values and offsets into page descriptions. It's
hard work and I discovered a utility in the source code -
<blah>/jrd/dmp.cpp which looks remarkably like it could help me in my
task.

I cannot find a 'main' function nor any instructions on building this
potentially useful utility. Does anyone have any clues please? I'd much
rather use a prewritten and probably bug free utility than write my own
- at present.

Ann has informed me, on the support list, that it is used by the server
itself when running in debug mode so it may not be suitable as a
standalone tool, however, as she hasn't done development work for three
years or so, she's not 100% sure and suggested I ask here.

Thanks.


Cheers,
Norman.

Norman Dunbar
Dunbar IT Consultants Ltd

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[Ann W. Harrison]

Norman,

    What I would suggest is that you call the dmp code from
cch.cpp - probably in CCH_checksum.  Check for the checks for
the page number or page type you want to dump.  Start the
server in a debugger and the pages appear, somewhat formatted.


Cheers,

Ann

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[Norman Dunbar-2]

Evening Ann,

>     What I would suggest is that you call the dmp code from
> cch.cpp - probably in CCH_checksum.
I had a look there today, thanks. It's probably the best place to call
the dump routines.

Unfortunately I have never built Firebird from source and I've certainly
never run it under a debugger. I feel a whole new "life" coming on! ;-)

I was rather hoping for a stand alone utility, but If I have to go down
the route of running Firebird under a debugger, I better start learning!

Cheers,
Norman.



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