13. Lock-based protocols ___ transactions if not all locks are granted, and they wait until all locks are granted until the transaction can continue.Abort Commit Rollback EndAnswer: C) RollbackExplanation:Lock-
Sebastian Bachle,Theo Harder.Tailor-made lock protocols and their DBMS integration.Proceedings of the 2008 EDBT workshop on Software engineering for tailor-made data management. 2008Bächle, S., Härder, T.: Tailor-made Lock Protocols and their DBMS Integration. In: Proc. EDBT 2008 Work...
未选定行 4.使用dbms_transaction包的相关函数,如: 1 2 3 4 5 6 7 8 9 10 11 SQL>selectsid,type,lmodefromv$lockwheresid =(selectdistinctsidfromv$mystat)andtypein('TX','TM'); norowsselected SQL>execdbms_output.put_line( dbms_transaction.local_transaction_id(true) ); PL/SQLproceduresucc...
32. 4.使用dbms_transaction包的相关函数,如: SQL> select sid,type,lmode from v$lock where sid =(select distinct sid from v$mystat) and type in ('TX','TM'); no rows selected SQL> exec dbms_output.put_line( dbms_transaction.local_transaction_id(true) ); PL/SQL procedure successfully c...
JP> Ideally, deadlock protocols should attempt to avoid deadlocks, but that isn't always possible.I meant to say "Ideally, locking protocols ..." it depends 0 Kudos Peter van den Bogaart Advisor 10-31-2008 09:44 AM Re: DEADLOCK_WAIT parameter setting Thnx all for the rem...
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1. A database system comprising: a storage to store plural base relations and a materialized view based on the plural base relations; and a controller adapted to provide plural types of locks to maintain data consistency in the base relations and the view, the plural types of locks comprising...
Techniques are provided for lock management. The techniques are based on an enhanced lock management system that generates a semantic response in response to lock requests for a res
Sebastian Bchle , Theo Hrder, Tailor-made lock protocols and their DBMS integration, Proceedings of the 2008 EDBT workshop on Software engineering for tailor-made data management, March 29-29, 2008, Nantes, France [doi>10.1145/1385486.1385492]...