Cannot upload file to Oracle DB using blob datatype

Hi
I am uploading a file to Oracle DB through JAVA. I am inserting the file as
a BLOB datatype. I am using JRUN 4 . But when I am uploading the file to the DB through my application it is not showing anything in the DB. The samp application is working fine on my QA environment on the same server . Is there some setting that needs to be done . Could this be a problem with the version of classes12.zip.
Also when i try to view the file it is giving me this error
ORA-06550: line 1, column 13:
PLS-00201: identifier 'DBMS_LOB' must be declared
ORA-06550: line 1, column 7:
PL/SQL: Statement ignored
Please help

Not sure afterall if you mean that you are having a pblm uploading (from what kind of file BTW?) or viewing after upload?
Try these tutorials - I found them very helpful. Also, do you have the 'PL/SQL Programming' book from Oracle Press? That has an entire chapter devoted to LOB types.
[url http://www.oracle.com/technology/sample_code/tech/java/jsp/samples/blob/blob.html] How to deploy a PL/SQL function returning BLOB as Web Service
[url http://www.oracle.com/technology/sample_code/tech/java/sqlj_jdbc/files/advanced/LOBSample/LOBSample.java.html]LOBsample
HTH

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