[ADMIN] reg:file transfer error

[sandhya]

hi....    when i am using select lo_export(filemanip.objid,'/tmp/sss.txt') from filemanip where fname = '/usr/sample.txt' ERROR:  could not create server file "/tmp/sss.txt": Permission denied please tell me what may be the problem.Any permissions i have to change? Where to modify inorder to perform successful operation. I am in root permission only.....Though it is not working.   Pls tell me what to do as early as possible....I need it urgently..   Thanks&Regards Sandhya