what is the difference between suspend and hibernate linux?
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Suspend puts everything into RAM, and shuts off pretty much everything but what's needed to maintain that memory, and detect startup triggers. Hibernate writes everything to your hard drive and completely powers down the system.
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Hibernate is a JPA implementation, while Spring Data JPA is a JPA Data Access Abstraction. Spring Data offers a solution to GenericDao custom implementations. ... Hibernate provides a reference implementation of the Java Persistence API that makes it a great choice as an ORM tool with benefits of loose coupling.
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In a simple world, MyISAM is faster for reads, InnoDB is faster for writes. Once you start introducing mixed read/writes, InnoDB will be faster for reads as well, thanks to its Row locking mechanism.
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Up vote 0. ACTIVE means the session is currently executing some SQL operations whereas INACTIVE means the opposite. Check out the ORACLE v$session documentation. By nature, a high number of ACTIVE sessions will slow down the whole DBMS including your application.
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HFS+ provides better space management than HFS for large drives. It is also a journaled file system so it does a better job of protecting its consistency and therefore your data, especially in the event of a system crash.
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Both method save or update() method are intended for reattaching a detached object. session. lock() method simply reattaches the object to the session without checking or updating the data base on the assumption that database in sync with the detached object. ... update() or session.
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In Stateless, server is not needed to keep the server information or session details to itself. In stateful, a server is required to maintain the current state and session information. In stateless, server and client are loosely coupled and can act independently. In stateful, server and client are tightly bound.
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The Hibernate architecture includes many objects such as persistent object, session factory, transaction factory, connection factory, session, transaction etc. The Hibernate architecture is categorized in four layers. This is the high level architecture of Hibernate with mapping file and configuration file.
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JDBC doesn't suffer from the same lag when it comes to startup and provided tables are SQL based, is able to access/record data quickly. Unlike hibernate, JDBC supports some types of queries. JDBC is able to insert multiple objects (persistent data) at one into the same table as part of one single query.
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AIX® enables memory pages to be maintained in real memory all the time. This mechanism is called pinning memory. Pinning a memory region prohibits the pager from stealing pages from the pages backing the pinned memory region. Memory regions defined in either system space or user space may be pinned.
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Torpor involves physiological changes related especially to body temperature, metabolism, and water balance. Hibernation is when an organism spends the winter in a state of dormancy; it is long-term multiday torpor for survival of cold conditions. Estivation is summer dormancy, for survival of hot and dry periods.
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openSession : When you call SessionFactory. openSession , it always creates a new Session object and give it to you. You need to explicitly flush and close these session objects. ... getCurrentSession , it creates a new Session if it does not exist, otherwise use same session which is in current hibernate context.
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Fortunately, Hibernate allows us to do this with named queries. A named query is a statically defined query with a predefined unchangeable query string. They're validated when the session factory is created, thus making the application to fail fast in case of an error.
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Veeam: File is locked by running session. I have found that more often than not, the issue is caused when a job is stopped incorrectly, for example the Veeam server is rebooted during a backup job.
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Is Hibernate Session a thread-safe object? No, Session is not a thread-safe object, many threads can't access it simultaneously. In other words, you cannot share it between threads. ... Difference between Hibernate createCriteria, createQuery, createSQLQuery.
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The difference between "locking" (Lock Workstation) and "logging out/signing out" (Logout) is what happens to your applications. Locking the computer means your apps are still ON and running. Logging/signing off will CLOSE all applications before signing out of the session.
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InnoDB is better option while you are dealing with larger database because it supports transactions, volume while MyISAM is suitable for small project. As InnoDB supports row-level locking which means inserting and updating is much faster as compared with MyISAM.