• Disable Oracle 11g ACL | emoracle
  Network ACLs disable ... risky for production.
  in Public bookmarks with 11g acl acls dbms_network disable network oracle utl_tcp
• Oracle Database 11g
  The Top New Features for DBAs and Developers | Security including Profiles and Password Verify Function
  in Oracle > Security with acl arup dba network packages security utl_http utl_tcp

utl_tcp from all users