What is difference between dump and backup?

Question

An RMAN backup is a physical backup and a Data Pump backup is a logical backup. A database dump using expdp is a 1-time export of one or more database schemas. It backs up DDL (table structures, views, synonyms, stored procedures, packages, etc), plus data. 17 дек. 2012 г.

Is a dump a backup?

Dump is completely different from tar, it is a program for backing up and restoring file system. It backups up the entire file system - not the files. Dump does not care what file system is on the hard drive, or even if there are files in the file system.

What is database dump file?

A database dump is a file containing a database structure and content. You can use it for backup purposes. In earlier Plesk versions, dumps could be created only using database management tools.

What is the difference between backup and export?

When you export, you are saving information (for example, a list of your passwords, bookmarks and so on) to share it with another unit. A backup is to make a copy that can be used in case your files are damaged or whatever.

What is the difference between pg_dump and Pg_basebackup?

pg_dump creates a logical backup, that is a series of SQL statements that, when executed, create a new database that is logically like the original one. pg_basebackup creates a physical backup, that is a copy of the files that constitute the database cluster. You have to use recovery to make such a backup consistent.

Expert · Answer