I have 2 tables.these two tables have a blob column .
now I want to write a trigger on table one ,and when insert/update table one ,and this operation can make new data to table two.

But I found trigger can not work on trigger column.I search this question on internet,but I have not found a good way to resolve it.

my database is oracle 9,does any body can help me?
thx for help,contact me msn:leton2008#hotmail.com #=@.