Near-zero downtime relocation of a pluggable database across container databases
US10860605B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jul 20, 2016 |
| Grant date | Dec 8, 2020 |
| Priority date | — |
| Expiry date | Jun 10, 2037 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06F2201/84
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
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.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.