On 2020/09/30 12:10, osumi.takamichi@fujitsu.com wrote:
> Hello, Ashutosh
>
>> Can they use a database with all unlogged tables?
> Unfortunately, no. They want to switch a cluster condition to "without WAL logging"
> only when they execute night bulk loading for their data warehouse.
> In other words, they would like to keep their other usual operations with WAL.
> In addition, using all tables as unlogged brings about
> the risk to lose data warehouse's data caused by an unexpected server crash or power outage.
But the same issue can happen even in the proposed approach
because Tsunakawa-san explains as follows?
> The server refuses to start (pg_ctl start fails) after an abnormal shutdown due to power outage, pg_ctl's immediate
shutdown,etc, showing a straightforward message like MySQL.
Regards,
--
Fujii Masao
Advanced Computing Technology Center
Research and Development Headquarters
NTT DATA CORPORATION