Traversing through oracle directory in Plsql

Hi experts ,
I want to traverse the oracle directory to search for a particluar pdf file and then convert that pdf file into blob file.
This blob file will be store in the oracle table.
The problem is that the path of the oracle directory will be dynamically set with the variables.
Please guide me for this as i dont't have the enough knowledge about the oracle directory objects.
Any useful link will also be appreciated.
Thanks

Oracle is a database software. Asking it to do OS level operation is in a sense wrong. But such a thing is achievable in oracle if you take the help programming language like C or Java.
Here is a very old post from ASKTOM where in Tom demonstrates how to do a list directory using embedded Java code and with the help of global temporary table.
Ask Tom "reading files in a directory -- how to get a list of available files."
This should get you started. If you have expertise in Java or C you can improvise it, as its a decade old code.
And to load the file into blob column of a table, again I will refer you to an ASKTOM post.
Ask Tom "Display PDF file stored in the Database"

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ops$tkyte@8i> GRANT JAVAUSERPRIV to ops$tkyte
2 /
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http://asktom.oracle.com/pls/asktom/f?p=100:11:4403621974400865::::P11_QUESTION_ID:439619916584
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Traversing through oracle directory in Plsql

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