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on some platforms, which is not too surprising considering how platform specific these macros must be). |
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.. | ||
common.c | ||
Makefile | ||
pg_backup_archiver.c | ||
pg_backup_archiver.h | ||
pg_backup_custom.c | ||
pg_backup_db.c | ||
pg_backup_db.h | ||
pg_backup_files.c | ||
pg_backup_null.c | ||
pg_backup_tar.c | ||
pg_backup_tar.h | ||
pg_backup.h | ||
pg_dump.c | ||
pg_dump.h | ||
pg_dumpall.sh | ||
pg_restore.c | ||
pg_upgrade | ||
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