A method for creating multiple QUIESCE DATABASE Copies (QDC) on a single server by mirroring a disk copy of a live database that is in a quiesced state and splitting them from their source, and then bringing the mirrored disks containing online snapshots back online to the server.

 
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> Method and system performing concurrently mark-sweep garbage collection invoking garbage collection thread to track and mark live objects in heap block using bit vector

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