1PG_RESTORE(1)            PostgreSQL 12.2 Documentation           PG_RESTORE(1)
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NAME

6       pg_restore - restore a PostgreSQL database from an archive file created
7       by pg_dump
8

SYNOPSIS

10       pg_restore [connection-option...] [option...] [filename]
11

DESCRIPTION

13       pg_restore is a utility for restoring a PostgreSQL database from an
14       archive created by pg_dump(1) in one of the non-plain-text formats. It
15       will issue the commands necessary to reconstruct the database to the
16       state it was in at the time it was saved. The archive files also allow
17       pg_restore to be selective about what is restored, or even to reorder
18       the items prior to being restored. The archive files are designed to be
19       portable across architectures.
20
21       pg_restore can operate in two modes. If a database name is specified,
22       pg_restore connects to that database and restores archive contents
23       directly into the database. Otherwise, a script containing the SQL
24       commands necessary to rebuild the database is created and written to a
25       file or standard output. This script output is equivalent to the plain
26       text output format of pg_dump. Some of the options controlling the
27       output are therefore analogous to pg_dump options.
28
29       Obviously, pg_restore cannot restore information that is not present in
30       the archive file. For instance, if the archive was made using the “dump
31       data as INSERT commands” option, pg_restore will not be able to load
32       the data using COPY statements.
33

OPTIONS

35       pg_restore accepts the following command line arguments.
36
37       filename
38           Specifies the location of the archive file (or directory, for a
39           directory-format archive) to be restored. If not specified, the
40           standard input is used.
41
42       -a
43       --data-only
44           Restore only the data, not the schema (data definitions). Table
45           data, large objects, and sequence values are restored, if present
46           in the archive.
47
48           This option is similar to, but for historical reasons not identical
49           to, specifying --section=data.
50
51       -c
52       --clean
53           Clean (drop) database objects before recreating them. (Unless
54           --if-exists is used, this might generate some harmless error
55           messages, if any objects were not present in the destination
56           database.)
57
58       -C
59       --create
60           Create the database before restoring into it. If --clean is also
61           specified, drop and recreate the target database before connecting
62           to it.
63
64           With --create, pg_restore also restores the database's comment if
65           any, and any configuration variable settings that are specific to
66           this database, that is, any ALTER DATABASE ... SET ...  and ALTER
67           ROLE ... IN DATABASE ... SET ...  commands that mention this
68           database. Access privileges for the database itself are also
69           restored, unless --no-acl is specified.
70
71           When this option is used, the database named with -d is used only
72           to issue the initial DROP DATABASE and CREATE DATABASE commands.
73           All data is restored into the database name that appears in the
74           archive.
75
76       -d dbname
77       --dbname=dbname
78           Connect to database dbname and restore directly into the database.
79
80       -e
81       --exit-on-error
82           Exit if an error is encountered while sending SQL commands to the
83           database. The default is to continue and to display a count of
84           errors at the end of the restoration.
85
86       -f filename
87       --file=filename
88           Specify output file for generated script, or for the listing when
89           used with -l. Use - for stdout.
90
91       -F format
92       --format=format
93           Specify format of the archive. It is not necessary to specify the
94           format, since pg_restore will determine the format automatically.
95           If specified, it can be one of the following:
96
97           c
98           custom
99               The archive is in the custom format of pg_dump.
100
101           d
102           directory
103               The archive is a directory archive.
104
105           t
106           tar
107               The archive is a tar archive.
108
109       -I index
110       --index=index
111           Restore definition of named index only. Multiple indexes may be
112           specified with multiple -I switches.
113
114       -j number-of-jobs
115       --jobs=number-of-jobs
116           Run the most time-consuming parts of pg_restore — those which load
117           data, create indexes, or create constraints — using multiple
118           concurrent jobs. This option can dramatically reduce the time to
119           restore a large database to a server running on a multiprocessor
120           machine.
121
122           Each job is one process or one thread, depending on the operating
123           system, and uses a separate connection to the server.
124
125           The optimal value for this option depends on the hardware setup of
126           the server, of the client, and of the network. Factors include the
127           number of CPU cores and the disk setup. A good place to start is
128           the number of CPU cores on the server, but values larger than that
129           can also lead to faster restore times in many cases. Of course,
130           values that are too high will lead to decreased performance because
131           of thrashing.
132
133           Only the custom and directory archive formats are supported with
134           this option. The input must be a regular file or directory (not,
135           for example, a pipe). This option is ignored when emitting a script
136           rather than connecting directly to a database server. Also,
137           multiple jobs cannot be used together with the option
138           --single-transaction.
139
140       -l
141       --list
142           List the table of contents of the archive. The output of this
143           operation can be used as input to the -L option. Note that if
144           filtering switches such as -n or -t are used with -l, they will
145           restrict the items listed.
146
147       -L list-file
148       --use-list=list-file
149           Restore only those archive elements that are listed in list-file,
150           and restore them in the order they appear in the file. Note that if
151           filtering switches such as -n or -t are used with -L, they will
152           further restrict the items restored.
153
154           list-file is normally created by editing the output of a previous
155           -l operation. Lines can be moved or removed, and can also be
156           commented out by placing a semicolon (;) at the start of the line.
157           See below for examples.
158
159       -n schema
160       --schema=schema
161           Restore only objects that are in the named schema. Multiple schemas
162           may be specified with multiple -n switches. This can be combined
163           with the -t option to restore just a specific table.
164
165       -N schema
166       --exclude-schema=schema
167           Do not restore objects that are in the named schema. Multiple
168           schemas to be excluded may be specified with multiple -N switches.
169
170           When both -n and -N are given for the same schema name, the -N
171           switch wins and the schema is excluded.
172
173       -O
174       --no-owner
175           Do not output commands to set ownership of objects to match the
176           original database. By default, pg_restore issues ALTER OWNER or SET
177           SESSION AUTHORIZATION statements to set ownership of created schema
178           elements. These statements will fail unless the initial connection
179           to the database is made by a superuser (or the same user that owns
180           all of the objects in the script). With -O, any user name can be
181           used for the initial connection, and this user will own all the
182           created objects.
183
184       -P function-name(argtype [, ...])
185       --function=function-name(argtype [, ...])
186           Restore the named function only. Be careful to spell the function
187           name and arguments exactly as they appear in the dump file's table
188           of contents. Multiple functions may be specified with multiple -P
189           switches.
190
191       -R
192       --no-reconnect
193           This option is obsolete but still accepted for backwards
194           compatibility.
195
196       -s
197       --schema-only
198           Restore only the schema (data definitions), not data, to the extent
199           that schema entries are present in the archive.
200
201           This option is the inverse of --data-only. It is similar to, but
202           for historical reasons not identical to, specifying
203           --section=pre-data --section=post-data.
204
205           (Do not confuse this with the --schema option, which uses the word
206           “schema” in a different meaning.)
207
208       -S username
209       --superuser=username
210           Specify the superuser user name to use when disabling triggers.
211           This is relevant only if --disable-triggers is used.
212
213       -t table
214       --table=table
215           Restore definition and/or data of only the named table. For this
216           purpose, “table” includes views, materialized views, sequences, and
217           foreign tables. Multiple tables can be selected by writing multiple
218           -t switches. This option can be combined with the -n option to
219           specify table(s) in a particular schema.
220
221               Note
222               When -t is specified, pg_restore makes no attempt to restore
223               any other database objects that the selected table(s) might
224               depend upon. Therefore, there is no guarantee that a
225               specific-table restore into a clean database will succeed.
226
227               Note
228               This flag does not behave identically to the -t flag of
229               pg_dump. There is not currently any provision for wild-card
230               matching in pg_restore, nor can you include a schema name
231               within its -t. And, while pg_dump's -t flag will also dump
232               subsidiary objects (such as indexes) of the selected table(s),
233               pg_restore's -t flag does not include such subsidiary objects.
234
235               Note
236               In versions prior to PostgreSQL 9.6, this flag matched only
237               tables, not any other type of relation.
238
239       -T trigger
240       --trigger=trigger
241           Restore named trigger only. Multiple triggers may be specified with
242           multiple -T switches.
243
244       -v
245       --verbose
246           Specifies verbose mode.
247
248       -V
249       --version
250           Print the pg_restore version and exit.
251
252       -x
253       --no-privileges
254       --no-acl
255           Prevent restoration of access privileges (grant/revoke commands).
256
257       -1
258       --single-transaction
259           Execute the restore as a single transaction (that is, wrap the
260           emitted commands in BEGIN/COMMIT). This ensures that either all the
261           commands complete successfully, or no changes are applied. This
262           option implies --exit-on-error.
263
264       --disable-triggers
265           This option is relevant only when performing a data-only restore.
266           It instructs pg_restore to execute commands to temporarily disable
267           triggers on the target tables while the data is reloaded. Use this
268           if you have referential integrity checks or other triggers on the
269           tables that you do not want to invoke during data reload.
270
271           Presently, the commands emitted for --disable-triggers must be done
272           as superuser. So you should also specify a superuser name with -S
273           or, preferably, run pg_restore as a PostgreSQL superuser.
274
275       --enable-row-security
276           This option is relevant only when restoring the contents of a table
277           which has row security. By default, pg_restore will set
278           row_security to off, to ensure that all data is restored in to the
279           table. If the user does not have sufficient privileges to bypass
280           row security, then an error is thrown. This parameter instructs
281           pg_restore to set row_security to on instead, allowing the user to
282           attempt to restore the contents of the table with row security
283           enabled. This might still fail if the user does not have the right
284           to insert the rows from the dump into the table.
285
286           Note that this option currently also requires the dump be in INSERT
287           format, as COPY FROM does not support row security.
288
289       --if-exists
290           Use conditional commands (i.e. add an IF EXISTS clause) to drop
291           database objects. This option is not valid unless --clean is also
292           specified.
293
294       --no-comments
295           Do not output commands to restore comments, even if the archive
296           contains them.
297
298       --no-data-for-failed-tables
299           By default, table data is restored even if the creation command for
300           the table failed (e.g., because it already exists). With this
301           option, data for such a table is skipped. This behavior is useful
302           if the target database already contains the desired table contents.
303           For example, auxiliary tables for PostgreSQL extensions such as
304           PostGIS might already be loaded in the target database; specifying
305           this option prevents duplicate or obsolete data from being loaded
306           into them.
307
308           This option is effective only when restoring directly into a
309           database, not when producing SQL script output.
310
311       --no-publications
312           Do not output commands to restore publications, even if the archive
313           contains them.
314
315       --no-security-labels
316           Do not output commands to restore security labels, even if the
317           archive contains them.
318
319       --no-subscriptions
320           Do not output commands to restore subscriptions, even if the
321           archive contains them.
322
323       --no-tablespaces
324           Do not output commands to select tablespaces. With this option, all
325           objects will be created in whichever tablespace is the default
326           during restore.
327
328       --section=sectionname
329           Only restore the named section. The section name can be pre-data,
330           data, or post-data. This option can be specified more than once to
331           select multiple sections. The default is to restore all sections.
332
333           The data section contains actual table data as well as large-object
334           definitions. Post-data items consist of definitions of indexes,
335           triggers, rules and constraints other than validated check
336           constraints. Pre-data items consist of all other data definition
337           items.
338
339       --strict-names
340           Require that each schema (-n/--schema) and table (-t/--table)
341           qualifier match at least one schema/table in the backup file.
342
343       --use-set-session-authorization
344           Output SQL-standard SET SESSION AUTHORIZATION commands instead of
345           ALTER OWNER commands to determine object ownership. This makes the
346           dump more standards-compatible, but depending on the history of the
347           objects in the dump, might not restore properly.
348
349       -?
350       --help
351           Show help about pg_restore command line arguments, and exit.
352
353       pg_restore also accepts the following command line arguments for
354       connection parameters:
355
356       -h host
357       --host=host
358           Specifies the host name of the machine on which the server is
359           running. If the value begins with a slash, it is used as the
360           directory for the Unix domain socket. The default is taken from the
361           PGHOST environment variable, if set, else a Unix domain socket
362           connection is attempted.
363
364       -p port
365       --port=port
366           Specifies the TCP port or local Unix domain socket file extension
367           on which the server is listening for connections. Defaults to the
368           PGPORT environment variable, if set, or a compiled-in default.
369
370       -U username
371       --username=username
372           User name to connect as.
373
374       -w
375       --no-password
376           Never issue a password prompt. If the server requires password
377           authentication and a password is not available by other means such
378           as a .pgpass file, the connection attempt will fail. This option
379           can be useful in batch jobs and scripts where no user is present to
380           enter a password.
381
382       -W
383       --password
384           Force pg_restore to prompt for a password before connecting to a
385           database.
386
387           This option is never essential, since pg_restore will automatically
388           prompt for a password if the server demands password
389           authentication. However, pg_restore will waste a connection attempt
390           finding out that the server wants a password. In some cases it is
391           worth typing -W to avoid the extra connection attempt.
392
393       --role=rolename
394           Specifies a role name to be used to perform the restore. This
395           option causes pg_restore to issue a SET ROLE rolename command after
396           connecting to the database. It is useful when the authenticated
397           user (specified by -U) lacks privileges needed by pg_restore, but
398           can switch to a role with the required rights. Some installations
399           have a policy against logging in directly as a superuser, and use
400           of this option allows restores to be performed without violating
401           the policy.
402

ENVIRONMENT

404       PGHOST
405       PGOPTIONS
406       PGPORT
407       PGUSER
408           Default connection parameters
409
410       PG_COLOR
411           Specifies whether to use color in diagnostics messages. Possible
412           values are always, auto, never.
413
414       This utility, like most other PostgreSQL utilities, also uses the
415       environment variables supported by libpq (see Section 33.14). However,
416       it does not read PGDATABASE when a database name is not supplied.
417

DIAGNOSTICS

419       When a direct database connection is specified using the -d option,
420       pg_restore internally executes SQL statements. If you have problems
421       running pg_restore, make sure you are able to select information from
422       the database using, for example, psql(1). Also, any default connection
423       settings and environment variables used by the libpq front-end library
424       will apply.
425

NOTES

427       If your installation has any local additions to the template1 database,
428       be careful to load the output of pg_restore into a truly empty
429       database; otherwise you are likely to get errors due to duplicate
430       definitions of the added objects. To make an empty database without any
431       local additions, copy from template0 not template1, for example:
432
433           CREATE DATABASE foo WITH TEMPLATE template0;
434
435       The limitations of pg_restore are detailed below.
436
437       ·   When restoring data to a pre-existing table and the option
438           --disable-triggers is used, pg_restore emits commands to disable
439           triggers on user tables before inserting the data, then emits
440           commands to re-enable them after the data has been inserted. If the
441           restore is stopped in the middle, the system catalogs might be left
442           in the wrong state.
443
444       ·   pg_restore cannot restore large objects selectively; for instance,
445           only those for a specific table. If an archive contains large
446           objects, then all large objects will be restored, or none of them
447           if they are excluded via -L, -t, or other options.
448
449       See also the pg_dump(1) documentation for details on limitations of
450       pg_dump.
451
452       Once restored, it is wise to run ANALYZE on each restored table so the
453       optimizer has useful statistics; see Section 24.1.3 and Section 24.1.6
454       for more information.
455

EXAMPLES

457       Assume we have dumped a database called mydb into a custom-format dump
458       file:
459
460           $ pg_dump -Fc mydb > db.dump
461
462       To drop the database and recreate it from the dump:
463
464           $ dropdb mydb
465           $ pg_restore -C -d postgres db.dump
466
467       The database named in the -d switch can be any database existing in the
468       cluster; pg_restore only uses it to issue the CREATE DATABASE command
469       for mydb. With -C, data is always restored into the database name that
470       appears in the dump file.
471
472       To reload the dump into a new database called newdb:
473
474           $ createdb -T template0 newdb
475           $ pg_restore -d newdb db.dump
476
477       Notice we don't use -C, and instead connect directly to the database to
478       be restored into. Also note that we clone the new database from
479       template0 not template1, to ensure it is initially empty.
480
481       To reorder database items, it is first necessary to dump the table of
482       contents of the archive:
483
484           $ pg_restore -l db.dump > db.list
485
486       The listing file consists of a header and one line for each item, e.g.:
487
488           ;
489           ; Archive created at Mon Sep 14 13:55:39 2009
490           ;     dbname: DBDEMOS
491           ;     TOC Entries: 81
492           ;     Compression: 9
493           ;     Dump Version: 1.10-0
494           ;     Format: CUSTOM
495           ;     Integer: 4 bytes
496           ;     Offset: 8 bytes
497           ;     Dumped from database version: 8.3.5
498           ;     Dumped by pg_dump version: 8.3.8
499           ;
500           ;
501           ; Selected TOC Entries:
502           ;
503           3; 2615 2200 SCHEMA - public pasha
504           1861; 0 0 COMMENT - SCHEMA public pasha
505           1862; 0 0 ACL - public pasha
506           317; 1247 17715 TYPE public composite pasha
507           319; 1247 25899 DOMAIN public domain0 pasha
508
509       Semicolons start a comment, and the numbers at the start of lines refer
510       to the internal archive ID assigned to each item.
511
512       Lines in the file can be commented out, deleted, and reordered. For
513       example:
514
515           10; 145433 TABLE map_resolutions postgres
516           ;2; 145344 TABLE species postgres
517           ;4; 145359 TABLE nt_header postgres
518           6; 145402 TABLE species_records postgres
519           ;8; 145416 TABLE ss_old postgres
520
521       could be used as input to pg_restore and would only restore items 10
522       and 6, in that order:
523
524           $ pg_restore -L db.list db.dump
525

SEE ALSO

527       pg_dump(1), pg_dumpall(1), psql(1)
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530
531PostgreSQL 12.2                      2020                        PG_RESTORE(1)
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