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Transcription

1 Objectivity/DB DB : a few basic exercises '%RQDFRUVL -XO\ 287/,1( How to create a shallow copy of an existing FD How to add/create DBs to this FD How to delete a DB from my FD How to re-attach a DB to my FD How to move DBs around in the FS Detecting and removing stale locks

2 How to create a shallow copy of an existing FD n create on your workstation a directory /[yourname] and cd into it o create a directory /myoofd and cd into it p check AMS and lock-server status [infn-corsi07] ~/daniele/myoofd > oocheckams Objectivity/DB (TM) Check AMS Utility, Version Copyright (c) Objectivity, Inc 1994, All rights reserved. AMS is running on 'infn-corsi07.corsi.infn.it'. [infn-corsi07] ~/daniele/myoofd > oocheckls infn-corsi98.corsi.infn.it Objectivity/DB (TM) Check Lock Server Utility, Version Copyright (c) Objectivity, Inc 1994, All rights reserved. The Lock Server is running on 'infn-corsi98.corsi.infn.it'. ) in the following we will both use a FD and copy and manipulate it locally

3 Â we can use muon0300.boot and muon0300.fddb : (original location: cmsfarm1gw.bo.infn.it::/gwpool/cmsdata/db/muon0300/ ) [infn-corsi07] ~/daniele/myoofd > echo $OO_FD_BOOT OO_FD_BOOT: Undefined variable. [infn-corsi07] ~/daniele/myoofd > oodumpcatalog Objectivity/DB (TM) List Database Files Utility, Version Copyright (c) Objectivity, Inc 1990, All rights reserved. ** Error #11514: oodumpcatalog: Missing Federated Database name. No Federated Database name specified, and no default (OO_FD_BOOT) available. Processing terminated. [infn-corsi07] ~/daniele/myoofd > setenv OO_FD_BOOT cmsfarm1gw.bo.infn.it::/gwpool/cmsdata/db/muon0300/muon0300.boot [infn-corsi07] ~/daniele/myoofd > oodumpcatalog Objectivity/DB (TM) List Database Files Utility, Version Copyright (c) Objectivity, Inc 1990, All rights reserved. FD Name = muon0300 FD ID = 101 FD File = cmsfarm1gw.bo.infn.it::/gwpool/cmsdata/db/muon0300/muon0300.fddb Boot File = cmsfarm1gw.bo.infn.it::/gwpool/cmsdata/db/muon0300/muon0300.boot Jnl Dir = cmsfarm1gw.bo.infn.it::/gwpool/cmsdata/db/muon0300 Lock Host = cmsfarm1gw.bo.infn.it ( )

4 VHH 25&$RYHUYLHZ SDUW 6HPLQDULR25&$&$5) The FD catalogue : oodumpcatalog [infn-corsi07] ~/daniele/myoofd > oodumpcatalog FD Name = muon0300 FD ID = 101 FD File = cmsfarm1gw.bo.infn.it::/gwpool/cmsdata/db/muon0300/muon0300.fddb Boot File = cmsfarm1gw.bo.infn.it::/gwpool/cmsdata/db/muon0300/muon0300.boot Jnl Dir = cmsfarm1gw.bo.infn.it::/gwpool/cmsdata/db/muon0300 Lock Host = cmsfarm1gw.bo.infn.it DB Name = CARF_System.META.muonHit118 DB ID = 7001 DB Image = cmsfarm1gw.bo.infn.it:: /db1/mb1mu_pt20/carf_system.meta.muonhit118.muontest0300.db ( ) DBs also have a DBID (and a DB Name), unique within one FD but not across them even if they share the same lockserver should still be unique if you want to share your DBs DBs have a DB Image path to specify their location (actually stored in the.fddb)

5 Â we can copy muon0300.boot and muon0300.fddb : (original location: cmsfarm1gw.bo.infn.it::/gwpool/cmsdata/db/muon0300/ ) c if you can get access to the CMS farm, do this: [infn-corsi07] ~/daniele/myoofd > scp cmsfarm1gw.bo.infn.it: /gwpool/cmsdata/db/muon0300/muon0300.boot. cmsprod@cmsfarm1gw.bo.infn.it's password: muon0300.boot 0 KB 0.2 kb/s ETA: 00:00:00 100% [infn-corsi07] ~/daniele/myoofd > scp cmsfarm1gw.bo.infn.it: /gwpool/cmsdata/db/muon0300/muon0300.fddb. cmsprod@cmsfarm1gw.bo.infn.it's password: muon0300.fddb 8576 KB kb/s ETA: 00:00:00 100% [infn-corsi07] ~/daniele/myoofd > ls -trl -rw-r--r-- 1 cmsprod zh 179 Jul 22 19:09 muon0300.boot -rw-r--r-- 1 cmsprod zh Jul 22 19:09 muon0300.fddb d otherwise just copy it from my local directory: [infn-corsixx] ~/[yourname]/myoofd > cp ~/daniele/myoofd/muon0300.boot. [infn-corsixx] ~/[yourname]/myoofd > cp ~/daniele/myoofd/muon0300.fddb.

6 VHH 25&$RYHUYLHZ SDUW Example of bootfile FDID FDs have a pagesize (Objy/DB reads and writes in pages) CMS uses a 32kb pagesize. [infn-corsi07] ~/daniele/myoofd > cat muon0300.boot oofdnumber=101 oolfdnumber=65535 oopagesize=32768 oolockservername=[mypc].bo.infn.it oofddbhost=[mypc].bo.infn.it oofddbfilename=/gwpool/home/cmsprod/daniele/myoofd/muon0300.fddb oojnlhost=[mypc].bo.infn.it oojnlpath=/gwpool/home/cmsprod/daniele/myoofd/journal name of lock-server host Host name and path of the journal files directory Host name and path of the.fddb file 9 the BOOT FILE name is the only one you should know in your application 9 it is created and managed using Objy/DB tools ( oonewfd, oochange )

7 n first of all, change the.boot file according to your needs: %()25( [infn-corsi07] ~/daniele/myoofd > cat muon0300.boot oofdnumber=3011 oolfdnumber=65535 oopagesize=32768 oolockservername=cmsfarm1gw.bo.infn.it oofddbhost=cmsfarm1gw.bo.infn.it oofddbfilename=/gwpool/cmsdata/db/muon0900/muon0900.fddb $)7(5 o then : [infn-corsi07] ~/daniele/myoofd > cat muon0300.boot oofdnumber=3011 oolfdnumber=65535 oopagesize=32768 oolockservername=infn-corsi98.corsi.infn.it oofddbhost=infn-corsi98.corsi.infn.it oofddbfilename=/gwpool/home/cmsprod/[yourname]/myoofd/muon0300.fddb [infn-corsi07] ~/[yourname]/myoofd > setenv OO_FD_BOOT /gwpool/home/cmsprod/[yourname]/myoofd/muon0300.boot [infn-corsi07] ~/[yourname]/myoofd > oodumpcatalog Objectivity/DB (TM) List Database Files Utility, Version Copyright (c) Objectivity, Inc 1990, All rights reserved. ** Error #2175: oohandle(oofdobj)::open(): Object Manager: The Lock Server host registered in the Federated Database file (pccmsgw.cmsfarm1.bo.infn.it) does not match the host given in the bootstrap file (infn-corsi98.corsi.infn.it). ( ) to make it into a real FD instead of just a pair of copied files, it must be installed!

8 n install the FD muon0300 : Â using a script (by T.Wildish) Â by hand using Objy/DB commands PHWKRG o copy /afs/cern.ch/w/wildish/public/bin/shallow-federation-copy.pl : [infn-corsi07] ~/daniele/myoofd > cp ~/daniele/myoofd/shallow-federation-copy.pl. [infn-corsi07] ~/daniele/myoofd > ls -trl total rwxr-xr-x 1 cmsprod zh Jul 20 11:46 muon0300.fddb -rw-r--r-- 1 cmsprod zh 152 Jul 20 16:38 muon0300.boot -rwxr-xr-x 1 cmsprod zh 5792 Jul 20 16:40 shallow-federation-copy.pl p run the script : [infn-corsi07] ~/daniele/myoofd > shallow-federation-copy.pl --source muon0300.boot --lockserver infn-corsi98.corsi.infn.it --nocopy Lockserver will be infn-corsi98.corsi.infn.it Using your Unix account ID for the federation ID: 101 Setting unix file permissions on the federation file OOInstalling the new federation parameters... Updating Name Service values... Now updating System Name Space (catalog) values... WARNING: Updating of Database File locations will be skipped... Federated Database Installation complete. All done. Your bootfile is infn-corsi07::/gwpool/home/cmsprod/daniele/myoofd/muon0300.boot

9 [infn-corsi07] ~/daniele/myoofd > ls -trl total rwxr-xr-x 1 cmsprod zh 5792 Jul 22 20:44 shallow-federation-copy.pl -rwxr-xr-x 1 cmsprod zh Jul 22 20:46 muon0300.fddb -rw-r--r-- 1 cmsprod zh 254 Jul 22 20:46 muon0300.boot drwxrwxr-x 2 cmsprod zh 4096 Jul 22 20:46 journal [infn-corsi07] ~/daniele/myoofd > cat muon0300.boot oofdnumber=101 oolfdnumber=65535 oopagesize=32768 oolockservername=infn-corsi98.corsi.infn.it oofddbhost=infn-corsi98 oofddbfilename=/gwpool/home/cmsprod/daniele/myoofd/muon0300.fddb oojnlhost=infn-corsi98 oojnlpath=/gwpool/home/cmsprod/daniele/myoofd/journal the FD has been installed locally, as can be checked with oodumpcatalog : [infn-corsi07] ~/daniele/myoofd > oodumpcatalog Objectivity/DB (TM) List Database Files Utility, Version Copyright (c) Objectivity, Inc 1990, All rights reserved. FD Name = muon0300 FD ID = 101 FD File = infn-corsi98::/gwpool/home/cmsprod/daniele/myoofd/muon0300.fddb Boot File = infn-corsi98::/gwpool/home/cmsprod/daniele/myoofd/muon0300.boot Jnl Dir = infn-corsi98::/gwpool/home/cmsprod/daniele/myoofd/journal Lock Host = infn-corsi98.corsi.infn.it ( )

10 [infn-corsi07] ~/daniele/myoofd > oodumpcatalog Objectivity/DB (TM) List Database Files Utility, Version Copyright (c) Objectivity, Inc 1990, All rights reserved. PHWKRG FD Name = muon0300 FD ID = 101 FD File = infn-corsi98::/gwpool/home/cmsprod/daniele/myoofd/muon0300.fddb Boot File = infn-corsi98::/gwpool/home/cmsprod/daniele/myoofd/muon0300.boot Jnl Dir = infn-corsi98::/gwpool/home/cmsprod/daniele/myoofd/journal Lock Host = infn-corsi98.corsi.infn.it DB Name = CARF_System.META.muonHit118 DB ID = 7001 DB Image = cmsfarm1gw.bo.infn.it::/db1/mb1mu_pt20/carf_system.meta.muonhit118.muontest0300.db DB Name = LogBook.META.muonHit118 DB ID = 7002 DB Image = cmsfarm1gw.bo.infn.it::/db1/mb1mu_pt20/logbook.meta.muonhit118.muontest0300.db DB Name = RUNS.META.muonHit118 DB ID = 7003 DB Image = cmsfarm1gw.bo.infn.it::/db1/mb1mu_pt20/runs.meta.muonhit118.muontest0300.db DB Name = SysCollections.META.muonHit118 DB ID = 7004 DB Image = cmsfarm1gw.bo.infn.it::/db1/mb1mu_pt20/syscollections.meta.muonhit118.muontest0300.db DB Name = SelectedStream.META.muonHit118 DB ID = 7005 DB Image = cmsfarm1gw.bo.infn.it::/db1/mb1mu_pt20/selectedstream.meta.muonhit118.muontest0300.db ( )

11 n install the FD muon0300 : Â using a script (by T.Wildish) Â by hand using Objy/DB commands PHWKRG First of all, restore the initial situation : [infn-corsi07] ~/daniele/myoofd > rm -R * [infn-corsi07] ~/daniele/myoofd > cp ~/daniele/myoofd/muon0300.boot_correct muon0300.boot [infn-corsi07] ~/daniele/myoofd > [infn-corsi07] ~/daniele/myoofd > [infn-corsi07] ~/daniele/myoofd > [infn-corsi07] ~/daniele/myoofd > [infn-corsi07] ~/daniele/myoofd > [infn-corsi07] ~/daniele/myoofd > cp ~/daniele/myoofd/muon0300.fddb. HGLWPXRQERRW DQGSXW³<2851$0(

12 n install the FD muon0300 : Â using a script (by T.Wildish) Â by hand using Objy/DB commands PHWKRG o create the journal directory, the directory where journal files are stored : [infn-corsi07] ~/daniele/myoofd > mkdir journal p use ooinstallfd : [infn-corsi07] ~/daniele/myoofd > ooinstallfd -fdnumber lockserverhost infn-corsi98.corsi.infn.it -jnldirpath /gwpool/home/cmsprod/daniele/myoofd/journal/ -nocatalog -nocheck /gwpool/home/cmsprod/daniele/myoofd/muon0300.boot Objectivity/DB (TM) Install Federated Database Utility, Version Copyright (c) Objectivity, Inc 1993, All rights reserved. Updating Name Service values... Now updating System Name Space (catalog) values... WARNING: Updating of Database File locations will be skipped... Federated Database Installation complete. the FD has been installed locally, as can be checked with oodumpcatalog :

13 [infn-corsi04] ~/daniele/myoofd > oodumpcatalog Objectivity/DB (TM) List Database Files Utility, Version Copyright (c) Objectivity, Inc 1990, All rights reserved. PHWKRG FD Name = muon0300 FD ID = FD File = infn-corsi98::/gwpool/home/cmsprod/daniele/myoofd/muon0300.fddb Boot File = infn-corsi98::/gwpool/home/cmsprod/daniele/myoofd/muon0300.boot Jnl Dir = infn-corsi98::/gwpool/home/cmsprod/daniele/myoofd/journal Lock Host = infn-corsi98.corsi.infn.it DB Name = CARF_System.META.muonHit118 DB ID = 7001 DB Image = cmsfarm1gw.bo.infn.it::/db1/mb1mu_pt20/carf_system.meta.muonhit118.muontest0300.db DB Name = LogBook.META.muonHit118 DB ID = 7002 DB Image = cmsfarm1gw.bo.infn.it::/db1/mb1mu_pt20/logbook.meta.muonhit118.muontest0300.db DB Name = RUNS.META.muonHit118 DB ID = 7003 DB Image = cmsfarm1gw.bo.infn.it::/db1/mb1mu_pt20/runs.meta.muonhit118.muontest0300.db DB Name = SysCollections.META.muonHit118 DB ID = 7004 DB Image = cmsfarm1gw.bo.infn.it::/db1/mb1mu_pt20/syscollections.meta.muonhit118.muontest0300.db DB Name = SelectedStream.META.muonHit118 DB ID = 7005 DB Image = cmsfarm1gw.bo.infn.it::/db1/mb1mu_pt20/selectedstream.meta.muonhit118.muontest0300.db ( )

14 Now I have my shallow copy of muon0300 FD If you liked the game so far, play it further and go on!

15 How to add/create DBs to this FD If I add/create DBs to my shallow copy of muon0300 FD, the original FD will not be modified! n Created and added DB files will be attached to the FD (usually I don't create DBs like this: ORCA and CARF will create DBs by theirselves as needed...) [infn-corsi07] ~/daniele/myoofd > oonewdb -db MyTestDB muon0300.boot Objectivity/DB (TM) Create Database Utility, Version Copyright (c) Objectivity, Inc 1992, All rights reserved. Created Database MyTestDB [DBID = 2]. [infn-corsi07] ~/daniele/myoofd > ls -trl total rw-r--r-- 1 cmsprod zh 262 Jul 22 20:06 muon0300.boot -rw-r--r-- 1 cmsprod zh Jul 22 20:11 muon0300.fddb drwxr-xr-x 2 cmsprod zh 4096 Jul 22 20:11 journal -rw-rw-rw- 1 cmsprod zh Jul 22 20:11 MyTestDB.muon0300.DB [infn-corsi07] ~/daniele/myoofd > oodumpcatalog grep -C MyTest DB Name = MyTestDB DB ID = 2 DB Image = infn-corsi98::/gwpool/home/cmsprod/daniele/myoofd/mytestdb.muon0300.db The new DB is created and attached!

16 o Let s check the attribute of the newly created DB : [infn-corsi07] ~/daniele/myoofd > oofile MyTestDB.muon0300.DB Objectivity/DB (TM) Examine Database File Utility, Version Copyright (c) Objectivity, Inc 1992, All rights reserved. Attempting to interpret the file... Data format : Linux Database format compatible with Objectivity release through 5.x File Type : Database DB ID : 2 Page Size : You may only attach this Database file to a Federated Database with the same Page Size and Schema. ***************************WARNING************************** * You should verify that this file does not belong to an * * active Federated Database before moving or modifying it. * ************************************************************

17 Beginning of oodumpcatalog s output just after the oonewdb command: Objectivity/DB (TM) List Database Files Utility, Version Copyright (c) Objectivity, Inc 1990, All rights reserved. FD Name = muon0300 FD ID = FD File = infn-corsi98::/gwpool/home/cmsprod/daniele/myoofd/muon0300.fddb Boot File = infn-corsi98::/gwpool/home/cmsprod/daniele/myoofd/muon0300.boot Jnl Dir = infn-corsi98::/gwpool/home/cmsprod/daniele/myoofd/journal Lock Host = infn-corsi98.corsi.infn.it DB Name = MyTestDB DB ID = 2 DB Image = infn-corsi98::/gwpool/home/cmsprod/daniele/myoofd/mytestdb.muon0300.db DB Name = CARF_System.META.muonHit118 DB ID = 7001 DB Image = cmsfarm1gw.bo.infn.it::/db1/mb1mu_pt20/carf_system.meta.muonhit118.muontest0300.db DB Name = LogBook.META.muonHit118 DB ID = 7002 DB Image = cmsfarm1gw.bo.infn.it::/db1/mb1mu_pt20/logbook.meta.muonhit118.muontest0300.db ( )

18 How to delete a DB from my FD n You can use the Objy/DB command oodeletedb : [infn-corsi07] ~/daniele/myoofd > oodeletedb -catalogonly -db MyTestDB muon0300.boot Objectivity/DB (TM) Delete Database Utility, Version Copyright (c) Objectivity, Inc 1992, All rights reserved. Are you sure you want to delete the Database? [Y-N]=> y Deleted the Database "MyTestDB" (ID = 2) from the Federated Database catalog. The -catalogonly flag ensures that the file is not deleted from the disk: the DB file is still there, but the DB entry has gone from the catalogue [infn-corsi07] ~/daniele/myoofd > oodumpcatalog grep -C MyTestDB [infn-corsi04] ~/daniele/myoofd > ls -trl total rw-r--r-- 1 cmsprod zh 262 Jul 22 20:06 muon0300.boot -rw-rw-rw- 1 cmsprod zh Jul 22 20:11 MyTestDB.muon0300.DB -rw-r--r-- 1 cmsprod zh Jul 22 20:23 muon0300.fddb drwxr-xr-x 2 cmsprod zh 4096 Jul 22 20:23 journal

19 How to re-attach a DB to my FD n You can use the Objy/DB command ooattachdb : [infn-corsi07] ~/daniele/myoofd > ooattachdb -id db MyTestDB -filepath /gwpool/home/cmsprod/daniele/myoofd/mytestdb.muon0300.db -host infn-corsi98.corsi.infn.it muon0300.boot Objectivity/DB (TM) Attach Database Utility, Version Copyright (c) Objectivity, Inc 1992, All rights reserved. First pass through... Attaching database...mytestdb ** Error #2837: DC: The Identifier specified (7001) is already being used by the Database "CARF_System.META.muonHit118". ** Error #2928: ooattachdb : An error has occurred. Processing terminated. Dangerous: always check id XXXX: it must be FREE!

20 [infn-corsi07] ~/daniele/myoofd > oodumpcatalog grep -C 2222 [infn-corsi07] ~/daniele/myoofd > [infn-corsi07] ~/daniele/myoofd > ooattachdb -id db MyTestDB -filepath /gwpool/home/cmsprod/daniele/myoofd/mytestdb.muon0300.db -host infn-corsi98.corsi.infn.it muon0300.boot Objectivity/DB (TM) Attach Database Utility, Version Copyright (c) Objectivity, Inc 1992, All rights reserved. First pass through... Attaching database...mytestdb Second pass through... Attaching database...mytestdb [infn-corsi07] ~/daniele/myoofd > oodumpcatalog grep -C 2222 DB Name = MyTestDB DB ID = 2222 DB Image = infn-corsi98.corsi.infn.it:: /gwpool/home/cmsprod/daniele/myoofd/mytestdb.muon0300.db Note: you can also attach the DB to another FD ( just specify a different bootfile). In advance, always remember to check for id XXXX to be FREE!

21 How to move DBs around in the FS How can I move a DB file to another directory? n Create the directory and move the DB file using standard UNIX commands... [infn-corsi07] ~/daniele/myoofd > ls -trl total rw-r--r-- 1 cmsprod zh 262 Jul 22 20:06 muon0300.boot -rw-r--r-- 1 cmsprod zh Jul 22 20:32 muon0300.fddb drwxr-xr-x 2 cmsprod zh 4096 Jul 22 20:32 journal -rw-rw-rw- 1 cmsprod zh Jul 22 20:32 MyTestDB.muon0300.DB [infn-corsi07] ~/daniele/myoofd > mkdir mydir [infn-corsi07] ~/daniele/myoofd > mv MyTestDB.muon0300.DB mydir/ [infn-corsi07] ~/daniele/myoofd > cd mydir/ [infn-corsi07] ~/daniele/myoofd/mydir > ls -trl total 548 -rw-rw-rw- 1 cmsprod zh Jul 22 20:32 MyTestDB.muon0300.DB the catalogue is still ignorant [infn-corsi07] ~/daniele/myoofd/mydir > oodumpcatalog grep -C 2222 DB Name = MyTestDB DB ID = 2222 DB Image = infn-corsi98.corsi.infn.it:: /gwpool/home/cmsprod/daniele/myoofd/mytestdb.muon0300.db so...

22 o remember to notify the FD about the new DB file location... [infn-corsi07] ~/daniele/myoofd/mydir > oochangedb -db MyTestDB -filepath /gwpool/home/cmsprod/daniele/myoofd/mydir/mytestdb.muon0300.db -host infn-corsi98.corsi.infn.it -catalogonly /gwpool/home/cmsprod/daniele/myoofd/muon0300.boot Objectivity/DB (TM) Change Database Utility, Version Copyright (c) Objectivity, Inc 1993, All rights reserved. p so that the catalog can be properly updated : [infn-corsi07] ~/daniele/myoofd/mydir > oodumpcatalog grep -C 2222 DB Name = MyTestDB DB ID = 2222 DB Image = infn-corsi98.corsi.infn.it:: /gwpool/home/cmsprod/daniele/myoofd/mydir/mytestdb.muon0300.db The new filepath for this DB file in the FD catalogue has been specified!

23 Detecting and removing stale locks Stale locks are locks that are left behind by processes that die abnormally Trivial example (but quite self-explanatory and very useful to a beginner...): n run ootoolmgr to view the FD: browsing it (by selecting Browse FD from the Tools menu) will create 2 read locks : [infn-corsi07] ~/daniele/myoofd > ootoolmgr muon0300.boot & [1] [infn-corsi07] ~/daniele/myoofd > oolockmon Objectivity/DB (TM) Lock Monitor Utility, Version Copyright (c) Objectivity, Inc 1989, All rights reserved. Lock Table for Lock Server on node "infn-corsi98.corsi.infn.it" - your UID is 101 UID HostID PID TransID APID Mode Type FdbID DbID OclID Lock table displayed, no entries. [infn-corsi07] ~/daniele/myoofd > [infn-corsi07] ~/daniele/myoofd > [infn-corsi07] ~/daniele/myoofd >

24 [infn-corsi07] ~/daniele/myoofd > [infn-corsi07] ~/daniele/myoofd > [infn-corsi07] ~/daniele/myoofd > [infn-corsi07] ~/daniele/myoofd > oolockmon here I started browsing the FD Objectivity/DB (TM) Lock Monitor Utility, Version Copyright (c) Objectivity, Inc 1989, All rights reserved. Lock Table for Lock Server on node "infn-corsi98.corsi.infn.it" - your UID is 101 UID HostID PID TransID APID Mode Type FdbID DbID OclID infn-corsi read Ocl infn-corsi read Ocl Lock table displayed, 2 entries.

25 o kill the ootoolmgr process and attempt to clean up the locks afterwards: [infn-corsi07] ~/daniele/myoofd > pp grep ootoolmgr cmsprod pts/1 S 22:58 0:01 ootoolmgr muon0300.boot [infn-corsi07] ~/daniele/myoofd > kill [1] Killed ootoolmgr muon0300.boot [infn-corsi07] ~/daniele/myoofd > oolockmon Objectivity/DB (TM) Lock Monitor Utility, Version Copyright (c) Objectivity, Inc 1989, All rights reserved. Lock Table for Lock Server on node "infn-corsi98.corsi.infn.it" - your UID is 101 UID HostID PID TransID APID Mode Type FdbID DbID OclID infn-corsi read Ocl infn-corsi read Ocl Lock table displayed, 2 entries. Locks are still there! We absolutely need to remove them!

26 n Remove locks : Â cleaning up with the transaction ID Â cleaning up all transactions started locally o Use the Objy/DB command oocleanup : [infn-corsi07] ~/daniele/myoofd > oocleanup -transaction muon0300.boot Objectivity/DB (TM) Transaction Recovery Utility, Version Copyright (c) Objectivity, Inc 1991, All rights reserved. Recovered transaction for FD "muon0300.boot". Finished processing all autonomous partitions. Finished attempting to recover all specified transactions. [infn-corsi07] ~/daniele/myoofd > oolockmon Objectivity/DB (TM) Lock Monitor Utility, Version Copyright (c) Objectivity, Inc 1989, All rights reserved. PHWKRG Lock Table for Lock Server on node "infn-corsi98.corsi.infn.it" - your UID is 101 UID HostID PID TransID APID Mode Type FdbID DbID OclID Lock table displayed, no entries. Locks removed. OK.

27 n Remove locks : Â cleaning up with the transaction ID Â cleaning up all transactions started locally o Instead of having to find the transaction ID for all the transactions that are in process, I can just tell it to clean up all transactions that were started locally, i.e. on this host [infn-corsi07] ~/daniele/myoofd > oocleanup -local muon0300.boot Objectivity/DB (TM) Transaction Recovery Utility, Version Copyright (c) Objectivity, Inc 1991, All rights reserved. Recovering local transactions for FD "muon0300.boot" on host "infn-corsi04.corsi.infn.it". ** Error #3104: oocleanup: Failed to recover transaction for FD "muon0300.boot". Error #0:. Finished processing all autonomous partitions. Finished attempting to recover all specified transactions. [infn-corsi07] ~/daniele/myoofd > oolockmon Objectivity/DB (TM) Lock Monitor Utility, Version Copyright (c) Objectivity, Inc 1989, All rights reserved. PHWKRG Lock Table for Lock Server on node "infn-corsi98.corsi.infn.it" - your UID is 101 UID HostID PID TransID APID Mode Type FdbID DbID OclID Lock table displayed, no entries. Again, locks removed. OK.

28 Is it enough? n No (obviously ). Look to official documentation on the Web (i.e. : and just practice Objy/DB yourself, n Remember that help on single commands is available by typing: [Objy-command] -help Sometimes trivial, sometimes useful, sometimes tricky. But use it. Acknowledgements & credits Thanks to T.Wildish for providing the original material for most of these exercises (see ORCA Tutorial - March 2001) and to C.Grandi for his help and support.