Instantaneous unplug of pluggable database from one container database and plug into another container database
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United States of America Patent
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Jul 19, 2016
Grant Date -
Sep 10, 2015
app pub date -
Mar 10, 2014
filing date -
Mar 10, 2014
priority date (Note) -
In Force
status (Latency Note)
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Abstract
A pluggable database is transported between a source DBMS and a destination DBMS, in a way that minimizes downtime of the pluggable database. While a copy of the pluggable database is being made at the destination DBMS, transactions continue to execute against the pluggable database at the source DBMS and change the pluggable database. Eventually, the transactions terminate or cease executing. Redo records generated for the transactions are applied to the copy of the pluggable database at the source DBMS. Undo records generated for at least some of the transactions may be stored in a separate undo log and transported to the destination DBMS. The transported pluggable database is synchronized at a destination DBMS in a “pluggable-ready state”, where it may be plugged into the destination container DBMS.
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