Dbeaver Pg_dump
Pgdump is a regular PostgreSQL client application (albeit a particularly clever one). This means that you can perform this backup procedure from any remote host that has access to the database. But remember that pgdump does not operate with special permissions. Code language: SQL (Structured Query Language) (sql) The options of the pgdumpall program are similar to the options of the pgdump program. This command omits the -W option to avoid typing the password for each individual database. How to backup database object definitions. Sometimes, you want to backup only database object definitions, not the data This is helpful in the testing phase. This is a capture of Dbeaver showing what I mean with 'foler like' structure. I can easily access the functions, tables, schemas, etc. Stored in the database definition. I'm not so worried about the loss of the original structure as it did not have much, but I do want to recreate it step by step when I need it. Downgrading a database from 9.3 to 9.1 is definitely not supported, particularly since version 9.1 is out of support. You'll have to use pgdump from the 9.3 installation to dump the database, then you can try to load the result into the 9.1 database. Watch out for errors during restore and test well!
Dbeaver Update Pg_dump
Summary: in this tutorial, you will learn how to backup the PostgreSQL databases using the pg_dump and pg_dumpall tool.
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Backing up databases is one of the most critical tasks in database administration. Before backing up the databases, you should consider the following type of backups:
- Full / partial databases
- Both data and structures, or only structures
- Point-in-time recovery
- Restore performance
PostgreSQL comes with pg_dump and pg_dumpalltools that help you backup databases easily and effectively.
For ones who want to see the command to backup databases quickly, here it is:
In the following section, you will learn step by step how to backup one database, all databases, and only database objects.
How to backup one database
To backup one database, you can use the pg_dump tool. The pg_dump dumps out the content of all database objects into a single file.
First, navigate to PostgreSQL bin folder:
Second, execute the pg_dump program and use the following options to backup the dvdrentaldatabase to the dvdrental.tar file in the c:pgbackup folder.
Let’s examine the options in more detail.
-U postgres: specifies the user to connect to the PostgreSQL database server. We used the postgres in this example.
-W: forces pg_dump to prompt for the password before connecting to the PostgreSQL database server. After you hit enter, pg_dump will prompt for the password of postgres user.
-F : specifies the output file format that can be one of the following:
c: custom-format archive file formatd: directory-format archivet: tarp: plain-text SQL script file).
In this example, we use -F t to specify the output file as a tar file.
dvdrental: is the name of the database that you want to back up.
> c:pgbackupdvdrental.tar is the output backup file path.
How to backup all databases
To back up all databases, you can run the individual pg_dump command above sequentially, or parallel if you want to speed up the backup process.
- First, from the psql, use the command
listto list all available databases in your cluster - Second, back up each individual database using the
pg_dumpprogram as described in the above section.
Besides the pg_dump program, PostgreSQL also provides you with the pg_dumpall tool that allows you to backup all databases at once. However, it is not recommended to use this tool because of the following reasons:
- The
pg_dumpallprogram exports all databases, one after another, into a single script file, which prevents you from performing the parallel restore. If you back up all databases this way, the restore process will take more time. - The processing of dumping all databases takes longer than each individual one so you do not know which dump of each database relates to a specific point in time.
If you have a good reason to use the pg_dumpallto backup all databases, the following is the command:
The options of the pg_dumpall program are similar to the options of the pg_dump program. This command omits the -W option to avoid typing the password for each individual database.
Dbeaver Pg_dump
How to backup database object definitions
Dbeaver Pg_dump Version
Sometimes, you want to backup only database object definitions, not the data This is helpful in the testing phase, which you do not want to move test data to the live system.
To back up objects in all databases, including roles, tablespaces, databases, schemas, tables, indexes, triggers, functions, constraints, views, ownerships, and privileges, you use the following command:
If you want to back up role definition only, use the following command:
If you want to backup tablespaces definition, use the following command:
Further Reading
Dbeaver Pg_dump Not Found
- https://www.postgresql.org/docs/current/app-pgdump.html – How to use the
pg_dumptool.