Utilisation of XMLInputStream and OutOfMemoryError (WLS 8.1 SP5)

Question

Hello,
Did somebody use weblogic.xml.stream.XMLInputStream to read/parse a large XML file?
If I understand it well, this class uses SAX to parse the files, so it must be stateless and it must not consume a lot of memory.
However, when I try to read a 15 Mb XML file, using the following code :
XMLInputStream matchingStream = XMLInputStreamFactory.newInstance().newInputStream(pFile);
while (matchingStream.hasNext()) {
XMLEvent event = matchingStream.next();
, memory's being consumed quickly and I get OutOfMemoryError when the java process' memory exceedes 74 Mb.
Can you approve/disapprove my utilisation of this class ?
Thanks in advance

Answer 1

I would normally suggest raising the issue with support, but I recall hearing that 8.1 is nearing the end of its support cycle, so I'm not sure that's an option for you. Other options:
- try upgrading to a newer SP, or better yet, a new version of WebLogic
- try changing to synchronous forwarding
- examine thread dumps from when the bridge appears to be stalled
- post the exception that bridge is throwing when it tries to connect
- try patching MQ (the problem could be on the MQ side, and perhaps an older version of the bridge may not be fully capable of handling all of MQs minor quirks)
- write a program to (A) detect inactivity on the src destination, and (B) somehow restart the bridge and/or all of WL when this occurs
Tom