At what stage you will apply the WAL generated in between the START/STOP backup.
In this design, we are not touching any WAL related code. The WAL files will get copied with each backup either full or incremental. And thus, the last incremental backup will have the final WAL files which will be copied as-is in the combined full-backup and they will get apply automatically if that the data directory is used to start the server.
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Ibrar Ahmed
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Jeevan Chalke Technical Architect, Product Development EnterpriseDB Corporation