Re: pg_dump / pg_restore - TOC.dat file

Felipe Santos wrote:

> 11471; 1262 36497111 DATABASE - mydb postgres
>
> 11471 - ?
> 1262 - ?
> 36497111 - Object ID
> DATABASE - Object Type
> mydb - Object Name
> postgres - Object Owner

The code that writes this is PrintTOCSummary() in
src/bin/pg_dump/pg_backup_archiver.c -- see that if you want more
details. (Each object here is a TocEntry struct, which is defined in
pg_backup_archiver.h, search for _tocEntry. Useful comments there.)

11471 is the internal ID of the object in the dump. Note that ; is a
comment delimiter for the TOC format, so if you just write the 11471 in
a separate line, the correct object is specified. The rest of the
entries after the ; are just commentary so that the DBA can understand
what the entry is for.

1262 is the OID of the pg_database catalog, so this identifies the entry
as a database. This is redundant with having DATABASE in the object
type. Similarly, 36497111 is the pg_database.oid column which is
redundant with having mydb as the database name.

The hyphen - is for the schema, if the object belongs into a schema.
A database obviously doesn't have one, hence the - in this particular
sample.

--
Álvaro Herrera http://www.2ndQuadrant.com/
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