== Data Access ==

<<TableOfContents(3)>>

=== Run Query ===

http://atlas-runquery.cern.ch/

=== Good Runs Lists ===

https://twiki.cern.ch/twiki/bin/view/Atlas/GoodRunsLists

https://twiki.cern.ch/twiki/bin/view/Atlas/GoodRunsListsTutorial

https://twiki.cern.ch/twiki/bin/view/AtlasProtected/GoodRunListsForData

=== Interesting Runs ===

https://twiki.cern.ch/twiki/bin/view/AtlasProtected/InterestingRuns2009

=== Luminosity Calculation ===

https://twiki.cern.ch/twiki/bin/view/Atlas/CoolLumiCalc

https://twiki.cern.ch/twiki/bin/viewauth/Atlas/CoolLumiCalcTutorial

=== TAGs ===

https://twiki.cern.ch/twiki/bin/view/Atlas/CommissioningTag

=== Trouble shooting ===

When running over ESDs first, encountered problems with database access, error messages like:
{{{
IOVDbSvc     ERROR Tag COMCOND-ES1CT-003-00 cannot be resolved for folder /LAR/Align
}}}

Reason: Database conditions not properly set

Solution: In exeSingleTopDPDMaker.py add somewhere at the beginning (e.g. before sequence initialisations):
{{{
from AthenaCommon.GlobalFlags import GlobalFlags
GlobalFlags.DetGeo.set_atlas()
GlobalFlags.DataSource.set_data()
from IOVDbSvc.CondDB import conddb
}}}

Details can be found: 
 * https://twiki.cern.ch/twiki/bin/view/Atlas/CoolTroubles#Tag_not_defined_or_cannot_be_res
 * https://twiki.cern.ch/twiki/bin/view/Atlas/CoolIOVDbSvcConfigurable#Conditions_DB_in_standalone_cont

----

Second error: POOL file GUID requested by COOL is not found in the attached catalogues. Gives messages like:
{{{
T_AthenaPoolCnv                           ERROR poolToObject: caught error: FID "74981861-8AD2-DE11-95BD-001CC466D3D3" is not existing in the catalog ( POOL : "PersistencySvc::UserDatabase::connectForRead" from "PersistencySvc" )
PixelDetectorManager                      ERROR Cannot find AlignableTransformContainer for key /Indet/Align - no misalignment
PixelDetectorManager                      FATAL Unable to apply Inner Detector alignments
}}}

Solution: could be resolved by either running on lxplus, where database is up-to-date or by following instructions here: 
 * https://twiki.cern.ch/twiki/bin/view/Atlas/CoolTroubles#Missing_POOL_file

On lxplus do:
{{{
grep -A 2 74981861-8AD2-DE11-95BD-001CC466D3D3 /afs/cern.ch/atlas/conditions/poolcond/catalogue/poolcond/PoolCat_oflcond.xml
}}}
or
{{{
grep -A 2 74981861-8AD2-DE11-95BD-001CC466D3D3 /afs/cern.ch/atlas/conditions/poolcond/catalogue/poolcond/PoolCat_comcond.xml
}}}
In this case, as we are looking at data, only the second gives output. Mind the different names for the xml-files for Monte Carlo and real data.

Copying /afs/cern.ch/atlas/conditions/poolcond/catalogue/poolcond/PoolCat_comcond.xml to the share directory of SingleTopDPDMaker fixes the problem.

If it still doesn't work then (was the case for me when processing mc09_900), follow the instructions given here and create a local database: https://twiki.cern.ch/twiki/bin/view/Atlas/AthenaDBAccess#Switching_to_use_local_SQLite_fi

{{{
ln -s /afs/cern.ch/user/a/atlcond/coolrep/sqlite200 sqlite200
ln -s /afs/cern.ch/atlas/project/database/DBREL/packaging/DBRelease/current/geomDB geomDB
}}}

=== Detector Description and Condition ===

You have to make sure you set the right detector conditions. There have been defined several new conditions, details:
 * https://twiki.cern.ch/twiki/bin/view/Atlas/AtlasGeomDBTags
 * https://twiki.cern.ch/twiki/bin/view/Atlas/AtlasDBRelease821TopTags