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Backup Concurrency in the same database

Antonios Chatzipavlis

Οι ερωτήσεις σχετικά με τα backups στο SQL Server είναι πάντα από αυτές που δέχομαι συχνά. Μια από αυτές τις ερωτήσεις είναι τι γίνεται στις περιπτώσεις που ταυτόχρονα συμπίπτουν δύο διαδικασίες backup είτε του ίδιου τύπου είτε διαφορετικού.

Στο παρακάτω πίνακα δείχνω τι ακριβώς γίνεται:



Already running FULL DIFFERENTIAL LOG
When Full Backup is running Blocked Blocked Allowed in all versions above 2005
When Differential Backup is running Blocked Blocked Allowed in all versions above 2005
When Log Backup is running Allowed in all versions above 2005 Allowed in all versions above 2005 Blocked


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Antonios Chatzipavlis

Antonios Chatzipavlis

Antonios is a Data Solutions Consultant and Trainer. He has been working in IT since 1988. In his career, he has worked as senior developer, IT Manager, Solutions Architect and IT Consultant. Since 1995 he has been devoted on new technologies and software development tools, mainly by Microsoft, either by training company staff and colleagues or assisting them in design, development and implementation as a consultant or chief developer. He has focused in Databases and Data Science since 1995. He specialized in Microsoft SQL Server since version 6.0 in areas like SQL Server Internals, Database Design and Development, Business Intelligence and in 2010 he has started working with Azure Data Platform, NoSQL databases, Big Data Technologies and Machine Learning. He is an active member of many IT communities in Greece, answering colleagues' questions and writing articles in his web site. He is the owner of SQLschool.gr which is a community portal with a lot of information about Microsoft SQL Server. He has been a Microsoft Certified Trainer (MCT) since 2000. Microsoft honored him as MVP on Data Platform due to his activities in SQL Server since 2010. He holds a large number of Microsoft Certifications and Microsoft SQL Server Certifications since version 6.5.


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