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Posted to commits@openjpa.apache.org by mi...@apache.org on 2011/01/13 23:06:56 UTC
svn commit: r1058760 -
/openjpa/branches/1.3.x/openjpa-project/src/doc/manual/supported_databases.xml
Author: mikedd
Date: Thu Jan 13 22:06:56 2011
New Revision: 1058760
URL: http://svn.apache.org/viewvc?rev=1058760&view=rev
Log:
OPENJPA-1699: Add documentation for fully materialized LOB issue with streaming LOBs and DB2
Modified:
openjpa/branches/1.3.x/openjpa-project/src/doc/manual/supported_databases.xml
Modified: openjpa/branches/1.3.x/openjpa-project/src/doc/manual/supported_databases.xml
URL: http://svn.apache.org/viewvc/openjpa/branches/1.3.x/openjpa-project/src/doc/manual/supported_databases.xml?rev=1058760&r1=1058759&r2=1058760&view=diff
==============================================================================
--- openjpa/branches/1.3.x/openjpa-project/src/doc/manual/supported_databases.xml (original)
+++ openjpa/branches/1.3.x/openjpa-project/src/doc/manual/supported_databases.xml Thu Jan 13 22:06:56 2011
@@ -467,6 +467,23 @@ of DESCSTAT, DB2 metadata tables must be
See DB2 for z/OS documentation for additional information.
</para>
</listitem>
+ <listitem>
+ <para>
+When using LOBs with persistent attributes of a streaming data type (e.g.
+<literal>java.io.InputStream</literal>) in the case of very large lob, DB2 JCC
+driver will automatically use progressive streaming to retrieve the Lob data.
+With progressiveStreaming, the inputStream retrieved must be fully materialized
+before the next iteration of call to rs.next(). By default
+this will result in a LobClosedException when OpenJPA processes the InputStream.
+ </para>
+ <para>
+To work around this condition you may force fullyMaterializedLobData to true in
+the connection URL as shown below :
+<programlisting>
+openjpa.ConnectionURL: jdbc:db2://localhost:50000/demodb:fullyMaterializeLobData=true;progressiveStreaming=NO
+</programlisting>
+ </para>
+ </listitem>
</itemizedlist>
</section>
</section>