Results 1 - 15 of about 100 sawaal for "deadlock"
Handling deadlocks is essential for providing reliable communication paths between processing nodes in parallel computer systems. The existence of multiple message types and associated intermessage dependencies may cause message-dependent deadlocks in networks that are designed to be free of routing deadlock. Most methods currently used for dealing with message-dependent deadlocks require more system
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Computers & Technology by Mohan Anand at 3:13 PM on July 30, 2008
Deadlock can be avoided if certain information about processes is available in advance of resource allocation. For every resource request, the system sees if granting the request will mean that the system will enter an unsafe state, meaning a state that could result in deadlock. The system then only grants requests that will lead to safe states. In order for the system to be able to figure out
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Computers & Technology by Ashish Kumar at 9:36 PM on October 29, 2008
deadlock that cannot be detected by ALLBASE/SQL could occur. This is known as an undetectable deadlock. In addition, when multi-transaction mode is used with multiple connections to the same DBEnvironment time.http://www.dotnets pider .com/forum/161931-What-Deadloc k.aspx...well;Deadlock occurs when two programs each hold resources the other needs to finish, and neither is willing to give them up
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Computers & Technology by tanu priya at 6:30 PM on August 20, 2008
of the applications was having a fair amount of trouble with database deadlocks. Stuarts team poured through the code and identified a number of places where this could be happening, patched them all up, and deployed the changes to production. But still, there were more deadlocks.After a few more rounds of unsuccessful bug hunting, they were finally given permission to attach a trace to the database server to watch
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Computers & Technology by Vinay at 4:22 AM on October 27, 2008
5.2.1NECESSARY CONDITIONS FOR DEADLOCKSA deadlock occurs in a system if the following four conditions hold simultaneously:1.Mutual exclusion: At least one of the resources is non is waiting for a resource held by P1, P1 is waiting for a resource held by P2, .., Pn-1 is waiting for a resource held Pn and Pn is in turn waiting for a resource held by P0....Deadlock refers to a specific
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Computers & Technology by Mohan Anand at 3:10 PM on July 30, 2008
and both resource is always busy. it is called dead lock Answered by: emiljose at 5:30 PM on December 10, 2007 | emiljose's Q & A | Report Abuse Rate this : 0 0... A deadlock occurs when two or more users are waiting for data locked by each other. When this happens, these users are stuck (deadly embraced) and cannot continue processing. Oracle automatically detects deadlocks and resolves them by rolling back one
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Computers & Technology by deadlock , computer at 11:10 PM on December 08, 2007
A deadlock is a situation wherein two or more competing actions are waiting for the other to finish, and thus neither ever does. It is often seen in a paradox like the chicken or the egg. When two sending anything more to it, while the server is similarly waiting for more input from the controlling program before outputting anything.Deadlock is a common problem in multiprocessing where many processes
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Computers & Technology by operator at 11:10 PM on December 08, 2007
Well Ashish! Here are the Deadlock Prevention:-Difference from avoidance is that here, the system itself is build in such a way that there are no deadlocks. Make sure at least one of the 4 deadlock conditions is never satisfied. This may however be even more conservative than deadlock avoidance strategy. Attacking Mutual condition never grant exclusive access. but this may not be possible for several
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Computers & Technology by Ashish Kumar at 9:37 PM on October 29, 2008
When multi-transaction mode is in effect across multiple DBEnvironments with multiple applications accessing the same DBEnvironments at the same time, it is possible that a deadlock that cannot be detected by ALLBASE/SQL could occur. This is known as an undetectable deadlock. In addition, when multi-transaction mode is used with multiple connections to the same DBEnvironment, an infinite wait can
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Computers & Technology by Mohan Anand at 3:11 PM on July 30, 2008
of programs that generate and store ou...Often neither deadlock avoidance nor deadlock prevention may be used. Instead deadlock detection and process restart are used by employing an algorithm that tracks resource allocation and process states, and rolls back and restarts one or more of the processes in order to remove the deadlock. Detecting a deadlock that has already occurred is easily possible since
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Computers & Technology by Ashish Kumar at 9:33 PM on October 29, 2008
used. A process needing the resource checks the semaphore to determine the resources status and then decides how to proceed.=====A Deadlock is A condition that occurs when two processes are each waiting for the other to complete before proceeding. The result is that both processes hang. Deadlocks occur most commonly in multitasking and client/server environments. Ideally, the programs that are deadlocked
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Computers & Accessories by rajeev at 11:44 PM on November 24, 2008
Since you have a huge piece of code, it is difficult to pin point and give you specific advise. First you have to make sure that it is really a deadlock situation. If you are getting any ORA errors, you can check up with Oracle documentation. If it is a deadlock, on the server side, it could be related to library cache deadlock, global enqueue deadlock etc. You may want to turn on trace events
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Computers & Technology Anonymously at 11:49 PM on December 18, 2008
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Deadlock is a situation when two processes, each having a lock on one piece of data, attempt to acquire a lock on the others piece. Each process would wait indefinitely for the other to release the lock, unless one of the user processes is terminated. SQL Server detects deadlocks and terminates one users process.A livelock is one, where a request for an exclusive lock is repeatedly denied because a
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Computers & Accessories by suman reddy at 10:16 PM on December 18, 2008
Well Ashish! A set of processes is deadlocked if each process in the set is waiting for an event that only another process in the set can cause including itself. Waiting for an event could be situation in which two computer programs sharing the same resource are effectively preventing each other from accessing the resource, resulting in both programs ceasing to function.Conditions for Deadlock
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Computers & Technology by Ashish Kumar at 9:38 PM on October 29, 2008
Well Mohan , The Bankers algorithm is a resource allocation & deadlock avoidance algorithm developed by Edsger Dijkstra that tests for safety by simulating the allocation of pre-determined maximum possible amounts of all resources, and then makes a "safe-state" check to test for possible deadlock conditions for all other pending activities, before deciding whether allocation should
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Computers & Technology by Mohan Anand at 3:12 PM on July 30, 2008
