pg_restore旧数据库备份

Question

Running 9.5 on Ubuntu 16.04 Unsure what database was backed up, I think 8.4

When I run pg_restore I get

pg_restore: implied data-only restore
--
-- PostgreSQL database dump
--


-- Started on 30608-10-13 11:53:01 MDT

SET statement_timeout = 0;
SET lock_timeout = 0;
SET client_encoding = 'SQL_ASCII';
SET standard_conforming_strings = off;
SET check_function_bodies = false;
SET client_min_messages = warning;
SET escape_string_warning = off;
SET row_security = off;

-- Completed on 2018-09-06 11:12:06 MDT

--
-- PostgreSQL database dump complete
--

When I run pg_restore -l

;
; Archive created at 30608-10-13 11:53:01 MDT
;     dbname: 
;     TOC Entries: -1835365408
;     Compression: -1
;     Dump Version: 1.11-0
;     Format: CUSTOM
;     Integer: 4 bytes
;     Offset: 8 bytes
;
;
; Selected TOC Entries:
;

Obviously there is a timestamp issue, and clearly the TOC entries and compression is off.

Not sure where to go from here. The file size indicates it should be a complete backup. I have multiple backups from same time frame, and they all report similar when I try to restore them.

Is there any way to uncompress the data portion of the file. I can hexedit and see the schema, but the data is in postgres's binary compressed (-Fc) format. I just need to find and verify a few entries, so if there's a manual way to inspect and search, that would work.

Any help is appreciated.

Answer 1

Yes, you could extract it just using -f parameter:

pg_restore -f /path/to/target/file /path/from/source/dump

More info here .

Answer 2

I couldn't see the timestamp issue in the output you pasted or I'm missing something.

Though, generally, if you would like to restore only few records, you may want to try -L of pg_restore in order to to reorder them and restore.

For example,

pg_restore -l dbdump > dblist

Edit dblist file (By comment them out or leave only those items you want to restore)

pg_restore -L dblist dbdump

pg_restore -d newdb dbdump