Обсуждение: pg_restore unexpected end of file
I'm trying to migrate a database from version 11 to version 15.
I have created a dump file on v11:
pg_dump --dbname=not_telling -Fc --no-owner > dump
Then I was trying to import it on v15:
pg_restore -v --dbname=not_telling --no-user /restore/dump
pg_restore: error: could not read from input file: end of file
The file is 525MB. First I thought that maybe the dump is corrupt, so I re-dumped the db again, but I got the same results. pg_dump does not report any error, but pg_restore cannot import it.
I can try to export into SQL format, but there is another (much larger) database that I need to migrate, and it has large binary blobs inside. I would prefer the custom format.
Is the custom dump format of v11 compatible with v15?
Thank you,
Laszlo
On 9/7/23 23:29, Les wrote: > I'm trying to migrate a database from version 11 to version 15. > > I have created a dump file on v11: > > pg_dump --dbname=not_telling -Fc --no-owner > dump --no-owner is ignored for non-text outputs. It is handled on the pg_restore end. > > Then I was trying to import it on v15: > > pg_restore -v --dbname=not_telling --no-user /restore/dump I'm guessing it was actually --no-owner not --no-user? > pg_restore: error: could not read from input file: end of file Are: > dump and /restore/dump pointing at the same thing? Was the dump file transferred from one location to another? If so how? > Is the custom dump format of v11 compatible with v15? Yes it is. https://www.postgresql.org/docs/current/app-pgdump.html "Because pg_dump is used to transfer data to newer versions of PostgreSQL, the output of pg_dump can be expected to load into PostgreSQL server versions newer than pg_dump's version. pg_dump can also dump from PostgreSQL servers older than its own version. (Currently, servers back to version 9.2 are supported.) However, pg_dump cannot dump from PostgreSQL servers newer than its own major version; it will refuse to even try, rather than risk making an invalid dump. Also, it is not guaranteed that pg_dump's output can be loaded into a server of an older major version — not even if the dump was taken from a server of that version. Loading a dump file into an older server may require manual editing of the dump file to remove syntax not understood by the older server. Use of the --quote-all-identifiers option is recommended in cross-version cases, as it can prevent problems arising from varying reserved-word lists in different PostgreSQL versions." > > Thank you, > > Laszlo > -- Adrian Klaver adrian.klaver@aklaver.com