POSTGRES-XL is a fully acid-compliant, open-source, easy to scale, multi-tenant security. Support share-nothing; Support massive data parallel processing-mpp (massively Parallel processing). is not very similar to Greenplum. Host Assignment3 host,
First, the environment$ psql--versionpsql (PostgreSQL) 9.4.4 As we all know, superuser privileges are too large for the security of the database, for non-administrator accounts, you need to create a normal user. Second, the grammar$ psql psql (9.4.
Use CreateUser to create a user[Plain]View Plaincopyprint?
[Email protected] ~]$/data/pgsql/bin/createuser--help
CreateUser creates a new PostgreSQL role.
Usage:
CreateUser [OPTION] ... [ROLENAME]
Options:
-C,--connection-limit=n
--View current Server databaseSELECTDatname fromPg_database--view the created user tableSELECT * fromPg_stat_user_tables--Create a databaseCREATE DATABASE"Fxsz_lt" withOWNER=postgresencoding='UTF8'tablespace=Pg_default--lc_collate= ' Chinese
I. INTRODUCTION to psql is a PostgreSQL command line interactive client tool, similar to the command line tool sqlplus: 1 in Oracle allows you to interactively type SQL or commands, then they are sent to the PostgreSQL server, and then the SQL or
First, the environment#配置远程连接su postgres vim/var/lib/pgsql/9.4/data/postgresql.conf Edit configuration file listen_address= ' localhost ' before the comment # removed, And the ' localhost ' should be ' * '; vim/etc/postgresql/8.2/main/pg_hba.conf
BackgroundPostgreSQL logical backup, refers to online backup database data, DDL output as SQL statements, data can be in the form of SQL statements or fixed separators (row format) output.
The backup does not affect the DML operation of the Backup
Main Library ConfigurationPg_hba.confHost replication All 10.2.0.0/0 TrustPostgresql.conflisten_addresses = ' * ' max_wal_senders = 5wal_level = Hot_standbyRestarting the main libraryConfigure from LibraryInstallationInstall with Yum (source
Seven, Pg_dump:
Pg_dump is a tool for backing up the PostgreSQL database. It can even make a full, consistent backup when the database is being used concurrently, without blocking access to the database by other users. The dump format generated by
The content source of this page is from Internet, which doesn't represent Alibaba Cloud's opinion;
products and services mentioned on that page don't have any relationship with Alibaba Cloud. If the
content of the page makes you feel confusing, please write us an email, we will handle the problem
within 5 days after receiving your email.
If you find any instances of plagiarism from the community, please send an email to:
info-contact@alibabacloud.com
and provide relevant evidence. A staff member will contact you within 5 working days.