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  73                       <li class="asset-meta-list-item">Posted on <time datetime="2007-05-04T14:35:52-08:00" itemprop="datePublished">May  4, 2007</time></li>
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  85   <li>Change primitives::login and ldap_authenticate to return a user record of user information if we can find it in LDAP, even if we could not authenticate the password, and pass back proper status</li>
  86
  87   <li>Straightened out new views WRT Synonyms and Grants</li>
  88
  89   <li>Implemented Users, Clearcase and DesignSync reports</li>
  90 </ul>
  91                   <h2>Synonyms and Grants</h2>
  92
  93 <p>When one creates a table or view in Oracle it appears to be "private" to the user who has created it. Others can get to the table but they need to specify a more qualified name. Additionally the need to have been granted access to it (at least select access).</p>
  94
  95 <p>So if we create a view, say foo, we also need to grant select access to those tables to the other users who might be using it. Additionally, in GPDB we have 3 DB level usernames: cm_gpdb, cm_gpdb_readonly and cm_gpdb_update. So if we create the view foo while logged in as cm_gpdb then login as say cm_gpdb_readonly, this new session will not be able to see foo.</p>
  96
  97 <p>So then the sequence is:</p>
  98
  99 <ol>
 100   <li>Create the table or view</li>
 101
 102 <div class=code><pre>
 103 create or replace view foo ...
 104 </pre></div>
 105
 106   <li>Grant select privileges to the table or view:</li>
 107
 108 <div class=code><pre>
 109 grant select to foo on cm_gpdb.foo for cm_gpdb_readonly
 110 </pre></div>
 111
 112   <li>Log into Oracle database as other user and create synonym:</li>
 113
 114 <div class=code><pre>
 115 create or replace synonym foo for cm_gpdb.foo
 116 </pre></div>
 117 </ol>
 118
 119 <h4>Notes</h4>
 120
 121 <ol>
 122   <li>The database's schema name for GPDB is cm_gpdb above</li>
 123
 124   <li>Grants need to be done whenever the table or view is recreated. Synonyms, being pointers, need to be created only when a new pointer is needed</li>
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