Db2 Sql Error Code 68
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Db2 Sql Error Code 404
each other. Join them; it only takes a minute: Sign up DB2 deadlock timeout Sqlstate: 40001, reason code 68 due to update statements called from servlet using SQL up vote 6 down vote favorite 3 I am calling
Db2 Sql Error Code 104
update statements one after the other from a servlet to DB2. I am getting error sqlstate 40001, reason code 68 which i found it is due to deadlock timeout. How can I resolve this issue? Can it be resolved by setting query timeout? If yes then how to use it with update statements in servlet or where to use it? db2 share|improve this question edited Nov 22 '11 at 22:28 Adam Wagner 8,61742858 asked Oct 31 '11 db2 sql error code 803 at 18:18 user1022467 31112 add a comment| 1 Answer 1 active oldest votes up vote 9 down vote The reason code 68 already tells you this is due to a lock timeout (deadlock is reason code 2) It could be due to other users running queries at the same time that use the same data you are accessing, or your own multiple updates. Begin by running db2pd -db locktest -locks show detail from a db2 command line to see where the locks are. You'll then need to run something like: select tabschema, tabname, tableid, tbspaceid from syscat.tables where tbspaceid = # and tableid = # filling in the # symbols with the ID number you get from the db2pd command output. Once you see where the locks are, here are some tips: ◦Deadlock frequency can sometimes be reduced by ensuring that all applications access their common data in the same order – meaning, for example, that they access (and therefore lock) rows in Table A, followed by Table B, followed by Table C, and so on. taken from: http://publib.boulder.ibm.com/infocenter/db2luw/v9r7/topic/com.ibm.db2.luw.admin.trb.doc/doc/t0055074.html recommended reading: http://www.ibm.com/developerworks/data/library/techarticle/dm-0511bond/index.html Addendum: if your servlet or another guilty application is using select statements found to be involved in the deadlock, you can try appending with ur to the select statements if accuracy of the newly updated (or inserted) data isn't important. share|improve this answer edited Oct 16 '14
code 68; SQl0911N; reason code 68 Technote (FAQ) Question Why does my DB2 online backup command fail and
Db2 Sql Error Code 811
return the following error?
"SQL0911N The current transaction has been db2 sql error code 204 rolled back because of a deadlock or timeout. Reason code "68". SQLSTATE=40001" Cause A DB2 online backup db2 sql error code 206 tries to obtain a IN lock on all tables that reside in SMS table spaces. If the table has a BLOB field, DB2 tries to upgrade the table lock to http://stackoverflow.com/questions/7957887/db2-deadlock-timeout-sqlstate-40001-reason-code-68-due-to-update-statements-ca an S lock. If an application currently executing on the server is also holding a lock on the table, the online backup can encounter a lock contention if its lock upgrade request is incompatible with the lock that the application holds on the table. When this happens, the online backup waits for the table to become available for the http://www.ibm.com/support/docview.wss?uid=swg21222153 period of time specified by the LOCKTIMEOUT database configuration parameter. If the specified amount of time passes and the application is still holding its lock, the online backup fails. You can find the table in question by looking for the following entry into the db2diag.log file: Error upgrading lock. PoolId: 45, ObjectId: 2, Intent: 3 Answer This is expected behavior. To resolve this problem, your have the following options: Identify the application that is holding the locks and force off that application Increase the LOCKTIMEOUT parameter Reschedule the online backup to avoid contention with lock intensive applications Change the tablespace type from SMS to DMS, as DMS will not need to acquire SHARE lock to read BLOB data. Document information More support for: DB2 for Linux, UNIX and Windows Recovery - Backup Software version: 7, 8 Operating system(s): AIX, HP-UX, Linux, Solaris, Windows Reference #: 1222153 Modified date: 2005-11-08 Site availability Site assistance Contact and feedback Need support? Submit feedback to IBM Support 1-800-IBM-7378 (USA) Directory of worldwide contacts Contact Privacy Terms of use Accessibility
deadlock; hang; PersistentLockManager; SQLCODE: -911 Technote (troubleshooting) Problem(Abstract) DB2 database deadlocks and SQLCODE -911 occur in the PersistentLockManager calls. Symptom The following exception http://www-01.ibm.com/support/docview.wss?uid=swg21410155 is written in the profileRoot/profileName/logs/serverName/SystemOut.log file: PersistentLoc E com.ibm.wbiserver.sequencing.lkmgr.PersistentLockManagerBean unlockAndGrantNext Error in http://www.dbforums.com/showthread.php?1629947-DB2-SQL-Error-SQLSTATE-40001-SQLERRMC-68 unlock and grant next com.ibm.db2.jcc.b.SqlException: DB2 SQL error: SQLCODE: -911, SQLSTATE: 40001, SQLERRMC: 2 at com.ibm.db2.jcc.b.yg.b(yg.java:3046) at com.ibm.db2.jcc.c.eb.h(eb.java:268) at com.ibm.db2.jcc.c.eb.a(eb.java:229) at com.ibm.db2.jcc.c.eb.c(eb.java:33) at com.ibm.db2.jcc.c.u.a(u.java:34) at com.ibm.db2.jcc.c.j.Ib(j.java:257) at com.ibm.db2.jcc.b.yg.Q(yg.java:2896) at com.ibm.db2.jcc.c.d.g(d.java:1444) at com.ibm.db2.jcc.b.eb.a(eb.java:191) at com.ibm.db2.jcc.b.yg.c(yg.java:274) at com.ibm.db2.jcc.b.yg.next(yg.java:238) at com.ibm.ws.rsadapter.jdbc.WSJdbcResultSet.next(WSJdbcResultSet.java:2468) at com.ibm.wbiserver.sequencing.lkmgr.PersistentLockManagerBean .unlockAndGrantNext(PersistentLockManagerBean.java:299) at com.ibm.wbiserver.sequencing.lkmgr.PersistentLockManagerBean .unlock(PersistentLockManagerBean.java:225) at com.ibm.wbiserver.sequencing.lkmgr.EJSLocalStatelessPersistent LockManager_19c5d0a6.unlock(Unknown Source) at db2 sql com.ibm.wbiserver.sequencing.wcc.UnlockUtil.unlockOnly(UnlockUtil.java:103) at com.ibm.wbiserver.sequencing.wcc.UnlockUtil.unlock(UnlockUtil.java:75) The error indicates that a deadlock occurred in the DB2 database server. Following is the deadlock data that is captured from the DB2 database. This data comes from the formatted output of the DB2DETAILDEADLOCK event monitor, which is created and active by default for every DB2 database: Deadlock ID: 889 (Deadlock detection time: 10/22/2009 11:07:26.772336) Appl Id: db2 sql error 127.0.0.1.53545.091022091435 is requesting following lock Lock Name : 0x0002000D000000000695003D52 Table of lock waited on : PERSISTENTLOCK Schema of lock waited on : DB2INST1 Type of lock: Row Mode of lock: X - Exclusive Mode application requested on lock: NS - Share (and Next Key Share) Lock object name: 110428221 A lock is held as shown in the following example: Lock Name : 0x0002000D000000000698004252 Lock Object Name : 110624834 Object Type : Row Table Name : PERSISTENTLOCK Mode : X - Exclusive Appl Id: 127.0.0.1.53525.091022091353 requesting following lock Lock Name : 0x0002000D000000000698004252 Table of lock waited on : PERSISTENTLOCK Schema of lock waited on : DB2INST1 Type of lock: Row Mode of lock: X - Excl
be sure to check out the FAQ by clicking the link above. You may have to register before you can post: click the register link above to proceed. To start viewing messages, select the forum that you want to visit from the selection below. Results 1 to 2 of 2 Thread: DB2 SQL Error: SQLSTATE: 40001, SQLERRMC: 68 Tweet Thread Tools Show Printable Version Subscribe to this Thread… Search Thread Advanced Search Display Linear Mode Switch to Hybrid Mode Switch to Threaded Mode 05-01-08,18:15 #1 Priya M View Profile View Forum Posts Registered User Join Date May 2008 Posts 1 Unanswered: DB2 SQL Error: SQLSTATE: 40001, SQLERRMC: 68 Hi, I am getting the following exception when there are multiple instances of EJB that try to update the same row in the database. I have a sequence number stored in a properties table and two nodes in a cluster have EJBs running that want to increment this sequence number. The exception is occuring when the code does a save on the hiberate DAO object, to update the row. Could someone please tell me what do I need to do to avoid this error? I would really appreciate your help. Caused by: com.ibm.db2.jcc.b.SqlException: DB2 SQL error: SQLCODE: -911, SQLSTATE: 40001, SQLERRMC: 68 at com.ibm.db2.jcc.b.rc.b(rc.java:3180) at com.ibm.db2.jcc.a.eb.i(eb.java:227) at com.ibm.db2.jcc.a.eb.a(eb.java:183) at com.ibm.db2.jcc.a.eb.a(eb.java:34) at com.ibm.db2.jcc.a.s.a(s.java:30) at com.ibm.db2.jcc.a.h.Gb(h.java:325) at com.ibm.db2.jcc.b.rc.R(rc.java:3022) at com.ibm.db2.jcc.a.d.f(d.java:1070) at com.ibm.db2.jcc.b.r.a(r.java:191) at com.ibm.db2.jcc.b.rc.c(rc.java:302) at com.ibm.db2.jcc.b.rc.next(rc.java:277) at com.ibm.ws.rsadapter.jdbc.WSJdbcResultSet.next(WSJ dbcResultSet.java:2419) at org.hibernate.loader.Loader.doQuery(Loader.java:68 5) at org.hibernate.loader.Loader.doQueryAndInitializeNo nLazyCollections(Loader.java:224) at org.hibernate.loader.Loader.doList(Loader.java:221 1) ... 29 more Thanks, Priya Reply With Quote 05-01-08,21:24 #2 Marcus_A View Profile View Forum Posts Registered User Join Date May 2003 Location USA Posts 5,737 You are getting a locktimeout. That means that one of the applications is holding a lock on a resource (probably a row) and another application is trying to acquire an incompatible lock on the same resource. The amount of time the second application waits depends on the setting of locktim