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For details see http://docs.oracle.com/cd/B28359_01/appdev.111/b28419/u_compr.htm
Edited by: user503635 on Mar 29, 2013 4:09 AM
to zip file you must call OS command. Search for "execute an OS command from PL/SQL".
See this blog for a package which can zip blobs http://technology.amis.nl/2010/03/13/utl_compress-gzip-and-zlib/
but I would like use class java.util.zip. Can I?
Yes, you can write code in Java and then use it within Oracle. Check out the Java developer's guide: http://docs.oracle.com/cd/E11882_01/java.112/e10588/toc.htm (11g)