Hi Everyone: In the past couple weeks, I started looking at Zope for my future development work. One of the requirements is to be able to upload and download Oracle blob via Zope. In the last few days, I spent most of my time searching through the mailing list for help from installing DCOracle to inserting blob from an external method. So far I've successfully used DCOracle to create an Oracle connection in an external method and performed some simple db tasks. Now here're my questions for all the zope gurus: 1. Can I use ZSQL method to insert blob into Oracle? It works for querying blob out of the database. Why doesn't it work in insertion? 2. In an external method can I get a hold of the connection object from zope by doing these: import Shared.DCOracle def sql_exec(self, param) ..... conn = self.oracle_connection cur = conn.cursor() cur.execute(sqlstat) ..... When I execute the function from Zope, it keeps giving me an AttributeError for the cursor. Can someone please explain? And if I create the db connection inside using conn = Shared.DCOracle.Connect('scott/tiger@oracledb'), I'll be getting the cursor successfully. 3. With the connection created in the external method, I thought I could make the blob insertion work. Obviously, I'm wrong! I keep getting an error about invalid hex number "oci.error: (1465, 'ORA-01465: invalid hex number\012')". The way I'm testing the insertion is to select a blob from one table and try to insert it in another as follow: cur.execute('select no, blob_data from res_info where no=1000') data = cur.fetchall() a,b = data[0] image = (100, b) cur.execute('insert into test_info (no, data) values(:p1, :p2)', image) I found that the returned "data" is a list of tuple. So I get the first tuple and unpack it. Then I created a new tuple and tried to insert it into the test_info table. And I keep getting the invalid hex number error. When I took this and converted it to a standalone program with a print statement for 'b', it printed out the correct binary data. So I suspect that I may have to convert the binary stream into a string before I can do the insertion? I also tried to set b = 'ff00ff00ff' (a text string of hex numbers), and it didn't complain about it. Can someone please tell me how blob shall be handled? Thanks in advance. - Cheuk