示例
示例一:执行gs_restore,导入指定MPPDB_backup.dmp文件(自定义归档格式)中postgres数据库的数据和对象定义。
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gs_restore -W password backup/MPPDB_backup.dmp -p 8000 -h 10.10.10.100 -d backupdb
gs_restore[2017-07-21 19:16:26]: restore operation successfu
gs_restore: total time: 13053 ms
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示例二:执行gs_restore,导入指定MPPDB_backup.tar文件(tar归档格式)中postgres数据库的数据和对象定义。
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gs_restore backup/MPPDB_backup.tar -p 8000 -h 10.10.10.100 -d backupdb
gs_restore[2017-07-21 19:21:32]: restore operation successful
gs_restore[2017-07-21 19:21:32]: total time: 21203 ms
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示例三:执行gs_restore,导入指定MPPDB_backup目录文件(目录归档格式)中postgres数据库的数据和对象定义。
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gs_restore backup/MPPDB_backup -p 8000 -h 10.10.10.100 -d backupdb
gs_restore[2017-07-21 19:26:46]: restore operation successful
gs_restore[2017-07-21 19:26:46]: total time: 21003 ms
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示例四:执行gs_restore,将postgres数据库的所有对象的定义导入至backupdb数据库。导入前,postgres存在完整的定义和数据,导入后,backupdb数据库只存在所有对象定义,表没有数据。
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gs_restore -W password /home//backup/MPPDB_backup.tar -p 8000 -h 10.10.10.100 -d backupdb -s -e -c
gs_restore[2017-07-21 19:46:27]: restore operation successful
gs_restore[2017-07-21 19:46:27]: total time: 32993 ms
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示例五:执行gs_restore,导入MPPDB_backup.dmp文件中PUBLIC模式的所有定义和数据。在导入时会先删除已经存在的对象,如果原对象存在跨模式的依赖则需手工强制干预。
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gs_restore backup/MPPDB_backup.dmp -p 8000 -h 10.10.10.100 -d backupdb -e -c -n PUBLIC
gs_restore: [archiver (db)] Error while PRO CES SING TOC:
gs_restore: [archiver (db)] Error from TOC entry 313; 1259 337399 TABLE table1 gaussdba
gs_restore: [archiver (db)] could not execute query: ERROR: cannot drop table table1 because other objects depend on it
DETAIL: view t1.v1 depends on table table1
HINT: Use DROP ... CASCADE to drop the dependent objects too.
Command was: DROP TABLE public.table1;
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手工删除依赖,导入完成后再重新创建。
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gs_restore backup/MPPDB_backup.dmp -p 8000 -h 10.10.10.100 -d backupdb -e -c -n PUBLIC
gs_restore[2017-07-21 19:52:26]: restore operation successful
gs_restore[2017-07-21 19:52:26]: total time: 2203 ms
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示例六:执行gs_restore,导入MPPDB_backup.dmp文件中PUBLIC模式下表hr.staffs的定义。在导入之前,hr.staffs表不存在。
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gs_restore backup/MPPDB_backup.dmp -p 8000 -h 10.10.10.100 -d backupdb -e -c -s -n PUBLIC -t hr.staffs
gs_restore[2017-07-21 19:56:29]: restore operation successful
gs_restore[2017-07-21 19:56:29]: total time: 21000 ms
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示例七:执行gs_restore,导入MPPDB_backup.dmp文件中PUBLIC模式下表hr.staffs的数据。在导入之前,hr.staffs表不存在数据。
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gs_restore backup/MPPDB_backup.dmp -p 8000 -h 10.10.10.100 -d backupdb -e -a -n PUBLIC -t hr.staffs
gs_restore[2017-07-21 20:12:32]: restore operation successful
gs_restore[2017-07-21 20:12:32]: total time: 20203 ms
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示例八:执行gs_restore,导入指定表hr.staffs的定义。在导入之前,hr.staffs表的数据是存在的。
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human_resource=# select * from hr.staffs;
staff_id | first_name | last_name | email | phone_number | hire_date | employment_id | salary | commission_pct | manager_id | section_id
----------+-------------+-------------+----------+--------------------+---------------------+---------------+----------+----------------+------------+------------
200 | Jennifer | Whalen | JWHALEN | 515.123.4444 | 1987-09-17 00:00:00 | AD_ASST | 4400.00 | | 101 | 10
201 | Michael | Hartstein | MHARTSTE | 515.123.5555 | 1996-02-17 00:00:00 | MK_MAN | 13000.00 | | 100 | 20
gsql -d human_resource -p 8000
gsql (( GaussDB 8.1.3 build 39137c2d) compiled at 2022-04-01 15:43:11 commit 3629 last mr 5138 release)
Non-SSL connection (SSL connection is recommended when requiring high-security)
Type "help" for help.
human_resource=# drop table hr.staffs CASCADE;
NOTICE: drop cascades to view hr.staff_details_view
gs_restore -W password /home//backup/MPPDB_backup.tar -p 8000 -h 10.10.10.100-d human_resource -n hr -t staffs -s -e
restore operation successful
total time: 904 ms
human_resource=# select * from hr.staffs;
staff_id | first_name | last_name | email | phone_number | hire_date | employment_id | salary | commission_pct | manager_id | section_id
----------+------------+-----------+-------+--------------+-----------+---------------+--------+----------------+------------+------------
(0 rows)
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示例九:执行gs_restore,导入staffs和areas两个指定表的定义和数据。在导入之前,staffs和areas表不存在。
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human_resource=# \d
List of relations
Schema | Name | Type | Owner | Storage
--------+--------------------+-------+----------+----------------------------------
hr | employment_history | table | | {orientation=row,compression=no}
hr | employments | table | | {orientation=row,compression=no}
hr | places | table | | {orientation=row,compression=no}
hr | sections | table | | {orientation=row,compression=no}
hr | states | table | | {orientation=row,compression=no}
(5 rows)
gs_restore -W password /home/mppdb/backup/MPPDB_backup.tar -p 8000 -h 10.10.10.100 -d human_resource -n hr -t staffs -n hr -t areas
restore operation successful
total time: 724 ms
human_resource=# \d
List of relations
Schema | Name | Type | Owner | Storage
--------+--------------------+-------+----------+----------------------------------
hr | areas | table | | {orientation=row,compression=no}
hr | employment_history | table | | {orientation=row,compression=no}
hr | employments | table | | {orientation=row,compression=no}
hr | places | table | | {orientation=row,compression=no}
hr | sections | table | | {orientation=row,compression=no}
hr | staffs | table | | {orientation=row,compression=no}
hr | states | table | | {orientation=row,compression=no}
(7 rows)
human_resource=# select * from hr.areas;
area_id | area_name
---------+------------------------
4 | Iron
1 | Wood
2 | Lake
3 | Desert
(4 rows)
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示例十:执行gs_restore,导入hr的模式,包含模式下的所有对象定义和数据。
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gs_restore -W password /home//backup/MPPDB_backup1.sql -p 8000 -h 10.10.10.100 -d backupdb -n hr -e -c
restore operation successful
total time: 702 ms
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示例十一:执行gs_restore,同时导入hr和hr1两个模式,仅导入模式下的所有对象定义。
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gs_restore -W password /home//backup/MPPDB_backup2.dmp -p 8000 -h 10.10.10.100 -d backupdb -n hr -n hr1 -s
restore operation successful
total time: 665 ms
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示例十二:执行gs_restore,将human_resource数据库导出文件进行解密并导入至backupdb数据库中。
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create database backupdb;
gs_restore /home//backup/MPPDB_backup.tar -p 8000 -h 10.10.10.100 -d backupdb --with-key=1234567812345678
restore operation successful
total time: 23472 ms
gsql -d backupdb -p 8000 -r
gsql ((GaussDB 8.1.3 build 39137c2d) compiled at 2022-04-01 15:43:11 commit 3629 last mr 5138 release)
Non-SSL connection (SSL connection is recommended when requiring high-security)
Type "help" for help.
backupdb=# select * from hr.areas;
area_id | area_name
---------+------------------------
4 | Iron
1 | Wood
2 | Lake
3 | Desert
(4 rows)
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示例十三:用户user1不具备将导出文件中数据导入至数据库backupdb的权限,而角色role1具备该权限,要实现将文件数据导入数据库backupdb,可以在导出命令中设置--role角色为role1,使用role1的权限,完成导出目的。
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human_resource=# CREATE USER user1 IDENTIFIED BY 'password';
gs_restore -U user1 -W password /home//backup/MPPDB_backup.tar -p 8000 -h 10.10.10.100 -d backupdb --role role1 --rolepassword password
restore operation successful
total time: 554 ms
gsql -d backupdb -p 8000 -r
gsql ((GaussDB 8.1.3 build 39137c2d) compiled at 2022-04-01 15:43:11 commit 3629 last mr 5138 release)
Non-SSL connection (SSL connection is recommended when requiring high-security)
Type "help" for help.
backupdb=# select * from hr.areas;
area_id | area_name
---------+------------------------
4 | Iron
1 | Wood
2 | Lake
3 | Desert
(4 rows)
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