Memory is not reclaimed after deleting element through deleteDocument

Hi,
I am using xmldb 2.3.10 in a large setup. Periodically db versions are created. While trying to purge the versions I am not able to see the memory usage going down until I restart the app. But after purging the versions and then restarting the app I can see huge memory gain. Can you please suggest ways to handle the same without restart.
Here is what I am doing:
Input : XmlTransaction& txn and integer type lastVersionToPurge
/*Code for xquery*/
string xquery;
xquery.append(" for $i in collection('").append(getName()).append("')");
xquery.append(" where $i/dbxml:metadata('").append(XdbConstants::METADATA_HIGH_DBVERID)
.append("')<=").append(Utils::uintToStr(lastVersionToPurge));
xquery.append(" return $i");
XmlQueryContext qc = getXmlManager().createQueryContext();
qc.setEvaluationType(XmlQueryContext::Lazy);
XmlResults res = getXmlManager().query(txn, xquery, qc, DBXML_LAZY_DOCS);
XmlDocument doc;
while (res.next(doc)) {
string docId = doc.getName();
//Setting up a boolean flag for metadat and ...
XmlUpdateContext uc = getXmlManager().createUpdateContext();
container_->deleteDocument(txn, docId, uc);
Now issue is that the process containing xmldb is approx 1GB before purging these versions. If without purging these version I restart the process there is not significant reduction in memory usage but if I restart the process after purge I can see huge reduction in memory footprint of containing process. Since restart of containing process includes stop/start of dbxml, is it possible to only restart the xmldb after the purge? If so what are the api's. If no are there other alternatives that do not require a restart of containing process.

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       1043Edited by: Sidney Chen on Aug 15, 2009 3:10 PM

Sidney Chen wrote:
hi All,
this the example from Tom's book <<expert oracle database architecture>>, may anyone explain why the leaf_block oes not decrease to 523 after delete.It's just the way it works - when a leaf block is emptied it is linked into the freelist, but also stays linked into the correct place in the index structure. It will be detached from the structure by a coalesce, or when Oracle needs to use a free block to handle new data.
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<ul>
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</ul>
Regards
Jonathan Lewis
http://jonathanlewis.wordpress.com
http://www.jlcomp.demon.co.uk
"Science is more than a body of knowledge; it is a way of thinking"
Carl Sagan

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