On 05/16/2017 01:28 AM, reem wrote:
> We have 1.5 TB database that's shown an error and block all commands.
> The error is :
> "ERROR: database is not accepting commands to avoid wraparound data loss in
> database "dbname"
> HINT: Stop the postmaster and use a standalone backend to vacuum that
> database.
> You might also need to commit or roll back old prepared transactions."
>
> I tried to do vacuum in the backend mode. Also I tried to set
> zero_damaged_pages = on then do the vacuum again but same error appeared.
> The error appeared after two hours of vacuuming where verbose shows passing
> tables.
Postgres version?
So was all the above done in the standalone backend?
>
> The cause of error could be :
> 1- a lot of insertion queries for not existing table
> or
> 2- truncating data with 40 GB in a week,
> we used to do that but this is the first time we had this error.
> also, autovacuume is turned on.
>
> Please , I need help or any suggestion?
>
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> --
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>
>
--
Adrian Klaver
adrian.klaver@aklaver.com