docker run --rm -v ./pg-data:/var/lib/postgresql/data -e POSTGRES_PASSWORD=password postgres:16 1. 执行后,你会看到很多有趣的输出内容,比如selecting dynamic shared memory implementation ... posix和performing post-bootstrap initialization ... ok,最终日志显示LOG: database system is ready to acc...
This reduces complexity and makes it much easier to get up and running. Tools like pgAdmin offer a user-friendly interface that even beginners can navigate easily, so you don’t need specialized skills to manage your database. Scalability: PostgreSQL scales impressively well, handling up to 100...
selectrelname, pg_size_pretty(pg_relation_size(relid)) from pg_stat_user_tables where schemaname='public'order by pg_relation_size(relid) desc; 5、检查临时文件 1 SELECT datname, temp_files AS"Temporary files",temp_bytes AS"Size of temporary files"FROM pg_stat_database ; 临时文件是按后端...
has_database_privilege(database,privilege) 当前用户是否有访问数据库的权限 CREATE/TEMPORARY has_function_privilege(user,function,privilege) 用户是否有访问函数的权限 EXECUTE has_function_privilege(function,privilege) 当前用户是否有访问函数的权限 EXECUTE has_language_privilege(user,language,privilege) 用户...
("192.168.1.88", 27017); //根据mongodb数据库的名称获取mongodb对象 , DB db = mongo.getDB( "database" ); Set<String> collectionNames = db.getCollectionNames(); // 打印出test中的集合 for (String name : collectionNames) { System.out.println("collectionName==="+name); } }catch(...
在Postgres 的数据目录中,表文件的存储格式为base/<database oid>/<table relfilenode>。 在base 目录下,存储了不同 Database 的数据,例如在我的当前环境中,当前的数据库名为rose,其 oid 为 24582。 img 所以在 Postgres 数据目录的 base 目录下,就会有对应的 Database 目录,目录名称就是 Oid: ...
PostgreSQL 支持参考文档 (Support for the PostgreSQL database.):https://docs.sqlalchemy.org/en/13/dialects/postgresql.html#module-sqlalchemy.dialects.postgresql.psycopg2 性能调优 其实就是加个参数好像。 https://www.psycopg.org/docs/extras.html#fast-execution-helpers Modern versions of psycopg2 include...
In this post you’ll get a bird’s eye view of all the Postgres work happening at Microsoft—with highlights for each of the workstreams from the last 8 months. And there’s a lot of ground to cover. Our PostgreSQL database investments encompass both Azure and open ...
If your follower is increasing in the number of commits it’s behind, it can be due to long-running transactions on your database. Using the pg-extras plugin, you can run heroku pg:ps to get currently running transactions. Then if any have been running for longer than expected, you can...
extensions but also tooling. Given that Postgres is an open-source project and easy to get started in, and also because developers love working on Postgres—a lot of useful tools have been created. Including several cool tools that will help you visualize the performa...