The user launching pg_probackup must have full access to backup_dir directory and at least read-only access to data_dir directory. If you specify the path to the backup catalog in the BACKUP_PATH environment variable, you can omit the corresponding option when running pg_probackup commands. ...
postgresql Postgres授予对数据库的只读角色访问权限溶液（已溶解）
mydb=# create user B with password '126.comM';# 授权用户Amydb=# grant select,update,delete on all tables in schema public to role1;GRANT mydb=# grant role1 to A with admin option;GRANT ROLE# 使用用户A登陆并把A用户得到的权限授权给B用户# pgsql 的用户在默认配置下创建的大写的用户转换...
ALTER EXTENSION CREATE AGGREGATE DROP ACCESS METHOD FETCH ALTER FOREIGN DATA WRAPPER CREATE CAST DROP AGGREGATE GRANT ALTER FOREIGN TABLE CREATE COLLATION DROP CAST IMPORT FOREIGN SCHEMA ALTER FUNCTION CREATE CONVERSION DROP COLLATION INSERT ALTER GROUP CREATE DATABASE DROP CONVERSION LISTEN ALTER INDEX CRE...
In this phase, a thorough analysis should be conducted on technology-related issues to evaluate the compatibility of the client, application server, data access, and database features. 1b. Oracle to Postgres migration: compatibility assessment One concern that can easily be overl...
GrantStmt该函数为grant和revoke命令的入口,在该函数内,将GrantStmt转换为InternalGrant,然后调用ExecGrantStmt_oids,该函数会有不同的分支,对不同对象调用不同函数,比如表的话,调用ExecGrant_Relation,数据库的话调用ExecGrant_Database。以表对象的权限管理过程为例介绍权限的算法。函数ExecGrant_Relation用来处理表...
grant all privileges on database ambari to ambari;#列出所有表\dselect * from users;(ambari界面登录的用户)hosts 主机列表 备库192.168.159.12安装好数据库,不要启动rm -rf /var/lib/pgsql/data/* 主库192.168.159.11root vi postgresql.conf AI检测代码解析 [root@hdp1 data]# cat postgresql.conf # ...
Now, provide this user with read-only access to relevant schemas and tables. Re-run this command for each schema you expect to replicate data from: GRANT USAGE ON SCHEMA <schema_name> TO <user_name>;GRANT SELECT ON ALL TABLES IN SCHEMA <schema_name> TO <user_name>;ALTER DEFAULT PRIVILE...
When Postgres accesses data for a query, the tables and indexes first pass through the buffer cache, which is a fixed-size in-memory cache, configured by the setting. Query performance can often rely on whether the query’s data is already in the cache or whether it has to access the un...
DROP DATABASE 命令需要在 PostgreSQL 命令窗口来执行,语法格式如下: DROP DATABASE [ IF EXISTS ] name 参数说明: IF EXISTS:如果数据库不存在则发出提示信息...,而不是错误信息。...例如,我们删除一个 runoobdb 的数据库: postgres=# DROP DATABASE runoobdb; dropdb 命令删除数据库 dropdb 是 DROP DATABA...