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      <h1>OmniAccess API - Functions</h1>
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      <p><a href="#syntax">Syntax</a></p>
      <p><a href="#options">Options</a></p>
      <p><a href="#example">Example</a></p>
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      <h2>OASAVEPOINT</h2>
      <p>oasavepoint marks a place in an update transaction for oarollback. It 
        can also roll a transaction forward and commit it. oasavepoint, along 
        with oabegin, oacommit, and oarollback are the four routines that support 
        transaction management from within OmniAccess.</p>
      <p>oasavepoint can serve either of two functions:</p>
      <ul>
        <li>It can mark a place in a complex transaction to prevent you from having 
          to roll back the indexing for the entire transaction if only a portion 
          of it failed.</li>
        <li>It can post as much of the index transaction that has occurred up 
          to that savepoint if the ROLLFORWARD option is used. This makes the 
          newly added keys available for searches using oaqualify, without actually 
          committing the index updates.</li>
      </ul>
      <p>oasavepoint is useful in complex transactions that include several update 
        steps. For example, oasavepoint would be useful in a transaction that 
        inserts a parent row, and then inserts rows to several of its related 
        child tables. If the last child table in a transaction ran out of space 
        before the row was added, it might be easier to rollback indexing for 
        that insertion instead of the entire transaction. If you had set a savepoint 
        before that insertion, you could roll back the insertion, create more 
        space in the target table, and then complete the insertion and its indexing.</p>
      <p>As you set savepoints in your native update transactions, you should 
        also call oasavepoint to mark indexing transactions. This keeps the indexes 
        synchronized with native data. If, for example, you roll a native transaction 
        back to a native savepoint, you should also roll the OmniAccess indexing 
        transaction back to a corresponding savepoint, otherwise the indexes will 
        wrongly reflect the rolled back updates to your native data.</p>
      <p><img src="../../../images/note.gif" width="12" height="15">Transaction 
        management applies to the Omnidex indexes only. If transaction management 
        is required for the database, use the DBMS transaction management system.</p>
      <p>See Also: <a href="../../../Utilities/ODXAIM/ODXAIM.htm">ODXAIM</a></p>
      <p>&nbsp;</p>
      <p class="line">&nbsp;</p>
      <h3><a name="syntax"></a>Syntax</h3>
      <P class="ex">oasavepoint (instance, options, status, savepoint)</P>
                  <P class="indent"><strong>instance</strong> -- Identifies a 
                    unique connection to a catalog previously established by oaconnect. 
                    Instance is a 32-bit signed integer passed by value.</P>
                  <P class="indent"><strong>options</strong> -- Is a character 
                    string, passed by reference, that indicates the action(s) 
                    for oasavepoint to take. Terminate the option list with a 
                    semicolon or a null character. If options contains only a 
                    semicolon or null character, oasavepoint defaults to the DELAYED 
                    option.</P>
                  <P class="indent"><strong>status</strong> -- Indicates the success 
                    or failure of the oasavepoint routine. A zero status.error 
                    means a successful call to oasavepoint. The status structure 
                    is passed by reference and contains fourteen 32-bit signed 
                    integers, followed by a 36-byte buffer.</P>
                  <P class="indent"><strong>savepoint</strong> -- Is a character 
                    string passed by value that sets a particular savepoint. If 
                    a rollback is required, oarollback can reference this savepoint 
                    to roll back to. This prevents having to roll back an entire 
                    transaction.</P>
	  <p>&nbsp;</p>
      <p class="line">&nbsp;</p>
      <h3><a name="options"></a>Options</h3>
      <P class="indent"><strong>DELAYED</strong> -- Default - causes 
                    all indexing transactions to be held and then posted either 
                    when oacommit is called, or when another oasavepoint is called 
                    with the ROLLFORWARD option. Use the DELAYED option to countermand 
                    an oabegin that used the IMMEDIATE option so that subsequent 
                    index updates are delayed until they are rolled forward or 
                    committed.</P>
                  <P class="indent"><strong>IMMEDIATE</strong> -- causes subsequent 
                    indexing transactions to be posted immediately when the call 
                    to the index update routine is called. Use the IMMEDIATE option 
                    to countermand an oabegin that used the DELAYED option so 
                    that subsequent index updates are posted immediately but not 
                    committed.</P>
                  <P class="indent"><strong>ROLLFORWARD</strong> -- causes all 
                    indexing transactions since the last call to oabegin to be 
                    posted to the indexes. These indexing transactions can still 
                    be rolled back if necessary.</P>
	  <p>&nbsp;</p>
      <p class="line">&nbsp;</p>
      <h3><a name="example"></a>Example</h3>
      <p>&nbsp;</p>
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