Problems with UTL_HTTP and problems of access to the network

I have a similar problem to what is already on the next thread

https://forums.Oracle.com/thread/2454508

But were unable to come to any solution so more need help!

I have this all works well from my local laptop, but I am not able to run our test (behind a layer switch 7) Server

-- Testing for google.com

BEGIN
  DBMS_NETWORK_ACL_ADMIN.create_acl (
    acl          => 'google.xml',
    description  => 'Google ACL Control List',
    principal    => 'TEST_USER',
    is_grant     => TRUE,
    privilege    => 'connect');
/

BEGIN
  DBMS_NETWORK_ACL_ADMIN.assign_acl (
    acl         => 'google.xml',
    host        => 'google.com');
END;
/


  COMMIT;
END;
/

Run the following as TEST_USER

SQL> select utl_http.request('google.com') from dual              
                                                                  
   1 select utl_http.request('google.com') from dual              
            *                                                     
ORA-29273: HTTP request failed                                    
ORA-06512: at "SYS.UTL_HTTP", line 1722                           
ORA-24247: network access denied by access control list (ACL)     
ORA-06512: at line 1                                              

which suggests that the ACL is the problem, but if I use the tcpportping function

SQL> select tcpportping('google.com',80) from dual   
                                                     
TCPPORTPING('GOOGLE.COM',80)                         
----------------------------                         
                           0                         
                                                     
1 row selected                                       
                                                     
Elapsed time: 00:00:00.424                           

It works very well.  If I tried tcpportping with a different host...

SQL> select tcpportping('google.co.uk',80) from dual           
                                                               
   1 select tcpportping('google.co.uk',80) from dual           
            *                                                  
ORA-29260: network error: not connected                        
ORA-06512: at "SYS.UTL_TCP", line 212                          
ORA-06512: at "SYS.UTL_TCP", line 432                          
ORA-06512: at "TEST_USER.TCPPORTPING", line 47            
ORA-24247: network access denied by access control list (ACL)  
ORA-06512: at line 1                
                          

which makes me think that ACL is not the real issue for "select utl_http.request ('google.com') from dual" as tcpportping does not an ACL problem, but it does for a (supposed) different host.

I can run nslookup to user o/s DB

[oracle@test2 ~]$ nslookup google.com
Server:         8.8.8.8
Address:        8.8.8.8#53


Non-authoritative answer:
Name:   google.com
Address: 173.194.34.98
Name:   google.com
Address: 173.194.34.100
Name:   google.com
Address: 173.194.34.102
Name:   google.com
Address: 173.194.34.99
Name:   google.com
Address: 173.194.34.97
Name:   google.com
Address: 173.194.34.103
Name:   google.com
Address: 173.194.34.104
Name:   google.com
Address: 173.194.34.96
Name:   google.com
Address: 173.194.34.101
Name:   google.com
Address: 173.194.34.110
Name:   google.com
Address: 173.194.34.105

and telnet ok

[oracle@test2 ~]$ telnet google.com 80
Trying 173.194.34.103...
Connected to google.com (173.194.34.103).
Escape character is '^]'.
GET / HTTP/1.0


HTTP/1.0 302 Found
Location: http://www.google.co.uk/?gws_rd=cr&ei=aKlKUvKDH8K80QXM1oGABg
Cache-Control: private
Content-Type: text/html; charset=UTF-8
Set-Cookie: PREF=ID=636a9a715d3e713a:FF=0:TM=1380624744:LM=1380624744:S=UmAm64le9UZRtDQE; expires=Thu, 01-Oct-2015 10:52:24 GMT; path=/; domain=.google.com
Set-Cookie: NID=67=vydxBJQUOyjK20AY5G_h7yd23MWHY9L1dxCNRTnkwaVilDsEdMViDB9bbkecMILO7U9SBpTQqGpwBR9y0pL1qcdj0Mx_Rdh_Gu0D3KiunmSIV1nrRdV4Q3T3Y4MKDFLz; expires=Wed, 02-Apr-2014 10:52:24 GMT; path=/; domain=.google.com; HttpOnly
P3P: CP="This is not a P3P policy! See http://www.google.com/support/accounts/bin/answer.py?hl=en&answer=151657 for more info."
Date: Tue, 01 Oct 2013 10:52:24 GMT
Server: gws
Content-Length: 261
X-XSS-Protection: 1; mode=block
X-Frame-Options: SAMEORIGIN
Alternate-Protocol: 80:quic


<HTML><HEAD><meta http-equiv="content-type" content="text/html;charset=utf-8">
<TITLE>302 Moved</TITLE></HEAD><BODY>
<H1>302 Moved</H1>
The document has moved
<A HREF="http://www.google.co.uk/?gws_rd=cr&ei=aKlKUvKDH8K80QXM1oGABg">here</A>.
</BODY></HTML>
Connection closed by foreign host.
[oracle@test2 ~]$

Then nslookup/ping/telnet of o/s DB user is ok - UTL_TCP (using the TcpPortPing function) is ok - but UTL_HTTP returns errors in the ACL?

Help please?

PS - If I run as user SYS utl_http it fails also

SQL> Session [1] SYS@ORACLE_TEST                    
SQL> select utl_http.request('google.com') from dual    
                                                        
   1 select utl_http.request('google.com') from dual    
            *                                           
ORA-29273: HTTP request failed                          
ORA-06512: at "SYS.UTL_HTTP", line 1722                 
ORA-12543: TNS:destination host unreachable             
ORA-06512: at line 1                                    

Hey guys,.

Problem solved!  Thanks a lot to Billy, thomaso and Anar for help.

It turns out that the problem was a whole linux http_proxy variable incorrect!  I could find that by using curl on the linux command line and send the trace to a file "curl--trace-ascii debugdump.txt http://www.google.co.uk. The trace file showed a misuse of the http_proxy variable. Once I disconnected the variable and restarted the database - everything was fine. Just a shame it wasn't better logging of oracle - error message was really a Kipper.

* Embarrassed * sorry guys!

See you soon,.

Brent

Tags: Database

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