Using a secondary storage system to maintain functionality of a database during database migration

A non-transitory computer readable storage medium comprising computer instructions for:

• receiving a request to migrate from a secondary storage system to a server a version of database content that was backed up to the secondary storage system from a primary system;
• mounting a database based on the data associated with a cloned view associated with the version of the database content;
• maintaining functionality of the database including by allowing a database application hosted on the server to access the mounted database while migrating the requested version of the database content from the secondary storage system to the server, wherein maintaining functionality of the database further comprises:
• modifying the cloned view associated with the version of the database content based on one or more changes made by the database application hosted on the server to the mounted database while a migration instance is being performed;
• receiving an indication that the migration instance is completed;
• determining an amount of time to migrate from the secondary storage system to the server the data associated with the one or more changes made by the database application hosted on the server to the mounted database;
• and
• finishing a migration of the one or more changes made to the mounted database to the server based on whether the determined amount of time is less than a downtime threshold, wherein finishing the migration of the one or more changes made to the mounted database to the server includes the database application hosted on the server being quiesced and migrating the data associated with the one or more changes made to the mounted database from the secondary storage system to the server after the database application has been quiesced.

A system, comprising:

• a processor;
• and
• a memory coupled with the processor, wherein the memory is configured to provide the processor with instructions which when executed cause the processor to:
• receive a request to migrate from a secondary storage system to a server a version of database content that was backed up to the secondary storage system from a primary system;
• mount a database based on the data associated with a cloned view associated with the version of the database content;
• maintain functionality of the database including by allowing a database application hosted on the server to access the mounted database while migrating the requested version of the database content from the secondary storage system to the server, wherein to maintain functionality of the database, the instructions cause the processor to:
• modify the cloned view associated with the version of the database content based on one or more changes made to the mounted database while a migration instance is being performed;
• receive an indication that the migration instance is completed;
• determine an amount of time to migrate from the secondary storage system to the server the data associated with the one or more changes made to the mounted database;
• and
• finish a migration of the one or more changes made to the mounted database to the server based on whether the determined amount of time is less than a downtime threshold, wherein to finish the migration of the one or more changes made to the mounted database to the server, the database application hosted on the server being quiesced and the processor is configured to migrate the data associated with the one or more changes made to the mounted database from the secondary storage system to the server after the database application has been quiesced.