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Tom Lane 98e8b48053 Create 'default_tablespace' GUC variable that supplies a TABLESPACE 
clause implicitly whenever one is not given explicitly.  Remove concept
of a schema having an associated tablespace, and simplify the rules for
selecting a default tablespace for a table or index.  It's now just
(a) explicit TABLESPACE clause; (b) default_tablespace if that's not an
empty string; (c) database's default.  This will allow pg_dump to use
SET commands instead of tablespace clauses to determine object locations
(but I didn't actually make it do so).  All per recent discussions.
 		2004-11-05 19:17:13 +00:00
..
po Translation updates 2004-11-02 09:28:41 +00:00
Makefile Improve pgindent processing of comment after 'else'. 2004-10-07 13:45:51 +00:00
README - Support for BLOB output from pg_dump and input via pg_restore 2000-07-21 11:40:08 +00:00
common.c Pgindent run for 8.0. 2004-08-29 05:07:03 +00:00
dumputils.c Pgindent run for 8.0. 2004-08-29 05:07:03 +00:00
dumputils.h Pgindent run for 8.0. 2004-08-29 05:07:03 +00:00
nls.mk Translation updates 2004-10-27 11:09:33 +00:00
pg_backup.h Pgindent run for 8.0. 2004-08-29 05:07:03 +00:00
pg_backup_archiver.c Message styling 2004-10-22 16:04:35 +00:00
pg_backup_archiver.h Pgindent run for 8.0. 2004-08-29 05:07:03 +00:00
pg_backup_custom.c Modify pg_dump so that the preferred dump order is by name within 2004-03-03 21:28:55 +00:00
pg_backup_db.c Allow pg_ctl to determine the server is up when getting a request for a 2004-10-16 03:10:17 +00:00
pg_backup_db.h Modify pg_dump so that the preferred dump order is by name within 2004-03-03 21:28:55 +00:00
pg_backup_files.c Modify pg_dump so that the preferred dump order is by name within 2004-03-03 21:28:55 +00:00
pg_backup_null.c Work around naming conflict between zlib and OpenSSL by tweaking inclusion 2003-12-08 16:39:05 +00:00
pg_backup_tar.c Adjust comments previously moved to column 1 by pgident. 2004-10-07 15:21:58 +00:00
pg_backup_tar.h $Header: -> $PostgreSQL Changes ... 2003-11-29 19:52:15 +00:00
pg_dump.c Create 'default_tablespace' GUC variable that supplies a TABLESPACE 2004-11-05 19:17:13 +00:00
pg_dump.h Create 'default_tablespace' GUC variable that supplies a TABLESPACE 2004-11-05 19:17:13 +00:00
pg_dump_sort.c Pgindent run for 8.0. 2004-08-29 05:07:03 +00:00
pg_dumpall.c Allow pg_ctl to determine the server is up when getting a request for a 2004-10-16 03:10:17 +00:00
pg_restore.c Message styling 2004-10-22 16:04:35 +00:00

README 

Notes on pg_dump
================

1. pg_dump, by default, still outputs text files.

2. pg_dumpall forces all pg_dump output to be text, since it also outputs text into the same output stream.

3. The plain text output format can not be used as input into pg_restore.

4. pg_dump now dumps the items in a modified OID order to try to improve relaibility of default restores.


To dump a database into the next custom format, type:

    pg_dump <db-name> -Fc > <backup-file>

or, in TAR format

	pg_dump <db-name> -Ft > <backup-file>

To restore, try
 
   To list contents:

       pg_restore -l <backup-file> | less

   or to list tables:

       pg_restore <backup-file> --table | less

   or to list in a differnet orderL

       pg_restore <backup-file> -l --oid --rearrange | less

Once you are happy with the list, just remove the '-l', and an SQL script will be output.


You can also dump a listing:

       pg_restore -l <backup-file> > toc.lis
  or
       pg_restore -l <backup-file> -f toc.lis

edit it, and rearrange the lines (or delete some):

    vi toc.lis

then use it to restore selected items:

    pg_restore <backup-file> --use=toc.lis -l | less

When you like the list, type

    pg_restore backup.bck --use=toc.lis > script.sql

or, simply:

    createdb newdbname
    pg_restore backup.bck --use=toc.lis | psql newdbname


BLOBs
=====

To dump blobs you must use the custom archive format (-Fc) or TAR format (-Ft), and specify the 
--blobs qualifier to the pg_dump command.

To restore blobs you must use a direct database connection (--db=db-to-restore-to).

eg.

   pg_dump --blob -Fc db-to-backup -f backup.bck

   pg_restore backup.bck --db=db-to-restore-into


TAR
===

The TAR archive that pg_dump creates currently has a blank username & group for the files, 
but should be otherwise valid. It also includes a 'restore.sql' script which is there for
the benefit of humans. It is never used by pg_restore.

Note: the TAR format archive can only be used as input into pg_restore if it is in TAR form.
(ie. you should not extract the files then expect pg_restore to work). 

You can extract, edit, and tar the files again, and it should work, but the 'toc'
file should go at the start, the data files be in the order they are used, and
the BLOB files at the end.


Philip Warner, 16-Jul-2000
pjw@rhyme.com.au