Olivier VERMEULEN created QPID-8297:
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Summary: [Broker-J][Oracle Message Store] QPID_MESSAGE_CONTENT
reserved space keeps growing until it reaches the limit and crashes
Key: QPID-8297
URL: https://issues.apache.org/jira/browse/QPID-8297
Project: Qpid
Issue Type: Bug
Components: Broker-J
Affects Versions: qpid-java-broker-7.1.0
Reporter: Olivier VERMEULEN
Under a continuous high load, the Oracle message store crashes because the
reserved space for the table QPID_MESSAGE_CONTENT keeps on growing (even if the
table itself is empty since we consume as fast as we produce).
This only happens for "big" messages (over 4KB) and comes from the way Oracle
handles the LOB types (content column is declared as a BLOB). For LOB values
over 4KB Oracle reserves some space in the table to handle the value but, by
default, it won't actually release it (even if the value is removed) before a
few hours.
So when we have a high load of big messages that lasts a few hours we end up
reaching the max size of the tablespace and the database crashes...
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