HTTP Error 500: Currently in a transaction

[Alexander Dutton <al...@it.ox.ac.uk>]

Hi all,

Our TDB-backed SPARQL endpoint is intermittently returning "HTTP Error 
500: Currently in a transaction". The Googlebot is prodding pages on the 
site, which performs SPARQL queries, which occasionally 500. When 
subsequently viewing those pages the queries succeed.

There doesn't seem to be anything in the server logs. The journal files 
are empty, and the server has been restarted a couple of times without a 
change in behaviour.

Any ideas?

Here are server versions (a trunk build from today):

Jena:       VERSION: 2.7.5-SNAPSHOT
Jena:       BUILD_DATE: 20121020-1638
ARQ:        VERSION: 2.9.5-SNAPSHOT
ARQ:        BUILD_DATE: 20121020-1638
TDB:        VERSION: 0.9.5-SNAPSHOT
TDB:        BUILD_DATE: 20121020-1638
Fuseki:     VERSION: 0.2.6-SNAPSHOT
Fuseki:     BUILD_DATE: 2012-10-20T23:21:00+0100


Best regards,

Alex

-- 
Alexander Dutton
Developer, Office of the CIO; data.ox.ac.uk, OxPoints
IT Services, University of Oxford

Re: HTTP Error 500: Currently in a transaction

[Alexander Dutton <al...@it.ox.ac.uk>]

Hi all,

Turns out I'm an idiot. It was our staging instance that was throwing 
the errors, and it has a rather large journal file. (And everything I 
was doing to fix the problem I was doing on the wrong machine.

Sigh. Sorry for the noise.

Best regards,

Alex