I confirm that values for CHAR, VARCHAR and LONGVARCHAR columns are set and
read through /CharacterStream/s.
Basically we have a proprietary ORM that maps every String-related column
read and write respectively to  /ResultSet.getCharacterStream() /and
/PreparedStatement.setCharacterStream()/ calls .


Noel Grandin wrote
> On 2013-08-12 17:15, davide.cavestro wrote:
>> Follows a partial call stack for a /Connection.close()/ call. I took it
>> at
>> JVM shutdown time for the Tomcat main thread on a JRockit JVM :
>>
> 
> 
> The DB size issue is probably down to fragmentation and fill-factor in 
> the internal data-structures.
> I don't see that we'll be able to improve things much here.
> 
> The shutdown issue is more interesting.
> It's spending time cleaning up the temporary LOB's that get created when 
> we need to pass them around, or when other things are casted into being 
> an LOB.
> 
> Is it possible that something in your code is either casting to an LOB 
> when it retrieves data, or passing data in or out of H2 using 
> InputStream or OutputStream?
> e.g. calling getOutputStream() on a ResultSet.
> 
> It doesn't look like we clean those things anywhere except for during a 
> shutdown(), which is a potential problem if you manage to generate a lot 
> of them.
> 
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