I've never seen this, but googling for "File ID mismatch got="  
suggests that H2 somehow got corrupted. I would recommend asking on the 
H2 list if the suggestion below does not work out:

We recently discovered that the GWC module in GeoServer was missing a 
module exclusion, causing it to ship with both H2 1.104 and 1.119. The 
database files should be compatible, and I didn't find any problems when 
I tested, but you could try stopping GeoServer, moving 1.104 out of the 
WEB-INF/libs directory , and start it again. (Or the same thing with 
1.119).

If you do so, I'd appreciate feedback on the issue.

-Arne




On 8/12/10 3:48 PM, Jeff Gerbracht wrote:
> I've a layer set up with a parameter filter and I have it configured
> in gwc.  It's been working well for weeks now, or so I thought.
> Yesterday I found out that some of the requests for specific parameter
> values were not returning tiles. The log file was filled with the
> following errors.
>
> 2010-08-10 11:28:42,402 ERROR [jdbc.JDBCMBIdCache] - General error:
> java.lang.RuntimeException: File ID mismatch got=54 expected=28
> pos=2074066 false
> org.h2.store.DiskFile:/web/geoserver/geoserverDataDir/gwc/meta_jdbc_h2/gwc_metastore.index.db
> blockCount:9 [50000-104]
> 2010-08-10 11:28:42,402 ERROR [geowebcache.GeoWebCacheDispatcher] -
> null http://myna.ornith.cornell.edu:8080/geoserver/gwc/service/wms
> 2010-08-10 11:28:42,407 ERROR [jdbc.JDBCMBIdCache] - General error:
> java.lang.RuntimeException: File ID mismatch got=54 expected=28
> pos=2074066 false
> org.h2.store.DiskFile:/web/geoserver/geoserverDataDir/gwc/meta_jdbc_h2/gwc_metastore.index.db
> blockCount:9 [50000-104]
> 2010-08-10 11:28:42,407 ERROR [geowebcache.GeoWebCacheDispatcher] -
> null http://myna.ornith.cornell.edu:8080/geoserver/gwc/service/wms
>
> I ended up resolving it, temporarily at least, by stopping Geoserver,
> deleting the meta_jdbc_h2 directory and restarting Geoserver.    Is
> there another way of resolving these issues???
>
>     Thanks
>       Jeff
>


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