Invention Grant
- Patent Title: Near-zero downtime relocation of a pluggable database across container databases
-
Application No.: US15215446Application Date: 2016-07-20
-
Publication No.: US10860605B2Publication Date: 2020-12-08
- Inventor: Jaebock Lee , Kumar Rajamani , Sanket Jain , Giridhar Ravipati
- Applicant: Oracle International Corporation
- Applicant Address: US CA Redwood Shores
- Assignee: ORACLE INTERNATIONAL CORPORATION
- Current Assignee: ORACLE INTERNATIONAL CORPORATION
- Current Assignee Address: US CA Redwood Shores
- Agency: Hickman Palermo Becker Bingham LLP
- Main IPC: G06F16/00
- IPC: G06F16/00 ; G06F16/27 ; G06F16/13 ; G06F16/11 ; G06F16/178 ; G06F16/23

Abstract:
Embodiments minimize downtime involved in moving a PDB between CDBs by allowing read-write access to the PDB through most of the moving operation, and by transparently forwarding connection requests, for the PDB, from the source CDB to the destination CDB. The files of a source PDB are copied from a source CDB to a destination CDB, during which the source PDB may be in read-write mode. The source PDB is then closed to write operations so that changes to the source PDB cease. Another round of recovery is performed on the PDB clone, which applies all changes that have been performed on the source PDB during the copy operation and the PDB clone is opened for read and write operations. Forwarding information is registered with the source location, which information is used to automatically forward connection requests, received at the source location for the moved PDB, to the destination location.
Public/Granted literature
- US20170116207A1 NEAR-ZERO DOWNTIME RELOCATION OF A PLUGGABLE DATABASE ACROSS CONTAINER DATABASES Public/Granted day:2017-04-27
Information query