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shared libs and bad magic number

Posted on 2000-04-10
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Last Modified: 2013-12-06
what can typically cause a bad magic number on a shared lib ?
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Question by:migue
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by:jlevie
ID: 2702931
In what context? Typically it would indicate something wrong with the shared lib, but it could also be a problem with how the lib is being examined.
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by:migue
ID: 2709017
need more detailed answer, examples etc....
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Expert Comment

by:jlevie
ID: 2709268
Well, what are you doing when you get "bad magic number" reported?
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Author Comment

by:migue
ID: 2710021
running a script thats loads some procs..to have other procs connect to oracle db on hp-ux.

I don't do anything. I just get the error and then crack open the DBA manuals.....
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Accepted Solution

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jlevie earned 40 total points
ID: 2710334
Does it give you a clue as to what shared lib it doesn't like? My suspicion is that there's either a path or filename problem and something is being specified that's not a shared lib, or that one of the shared libs is in fact bogus.

The "magic number" is just that. There's a file somewhere (perhaps in /etc or /usr/share) on your system that defines certain special numbers that will in appear in files of a specific type at a certain location(s) in the file ("man magic" should tell you more). The magic number is always used by the file(1) command when it tells you what a give file type is. Other things might use the same process to determine the validity of a file they've been given for processing, like a dynamic loader.
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