Simply install a new disk drive, take an online backup of the live node, restore on the failed machine, start the monitor to sync the last few transactions and restore full replication at clients. Channels are named entities that define a scope of replication within a physical node. VOD handles distributed data processing using a distributed two-phase commit protocol across multiply connected databases. In this case, VOD may decide to swap objects back to the server process to make space and do some work that will have to be done at commit anyway. These forms and others are used to optimize cache effectiveness when using non-default locking strategies like optimistic locking or when you have a series of transactions that form a task and operate on the same set of objects.
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VOD supports both global locking strategies that can be applied to a connection and extremely fine grained control to override behavior for a particular use case.
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Versant provides this query capability in a number of forms depending on the developer’s chosen language binding. Retrieved from ” https: Around this time object-oriented programming OO became popular, and the company used research done at the University of Wisconsin  for a commercial database system to complement OO languages.
Ong previously worked with the open-source relational database management system Ingres. Each logical database is stored as a set of files into a subdirectory defined by the configuration file.
The current recommended version is t7 9.
All of this is handled without any user involvement. License information can be found in the ICB Intranet. Usually the “best kind of application” to use a Fastobjectsseerver database are those applications requiring an application specific database of an online transaction processing nature. Versant is a multi-user client server database and has production applications with thousands of concurrently connected users.
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Versant Object Database
The FastObjects database server currently runs on planck. It was headquartered in Fastobjectssfrver City, California. This is sometimes desired for embedded or real-time systems where performance and space needs to be optimized.
This allows participation in online distributed transactions with relational databases. It is for high availability or for distribution or integration.
Shared information referenced from object graphs that reside in other databases and resolution of that information is transparent at runtime.
VOD supports queries via a server side indexing and query execution engine. Views Article Discussion Edit History. Please help improve it or discuss these issues on the talk page. Versant supports the XA protocol for distributed transactions.
Objects could be “moved” from one physical node to another without any application code changes required. If any one fastobjectsservr the databases in the buddy pair should become unreachable, the in-flight transactions are handled so that there is no commit failure, instead in-flight transactions on node failure will continue to the node that is still alive in the buddy pair.
In Augustthe common stock had a 1-for reverse stock split. Still, comparative results could not be obtained. Those are in fact commonly used to performance tune on a use case basis.
The FastObjects server can be shutdown from a the local server or any machine on the network. From Wikipedia, the free encyclopedia.
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In this process, VOD uses an internal resource manager that is handling the distributed transactions. It is a string based implementation which allows parameterized runtime binding. The XA API allows the Versant database to act as a resource controlled by an external transaction monitor coordinating changes to both Versant and relational databases in the same transactional context.
In general this means an application with the new schema will not cause evolution, except for new and updated objects. The “scope” can be anything from full database replication to something as fine grained as anything definable by a Versant query. This includes the default behavior for queries which only return a collection of references to objects that satisfied the query predicate, not the actual objects.