Virtual log file growth In previous versions of SQL Server, if the next growth is more than 1/8 of the current log size, and the growth is less than 64 MB, four VLFs were created. In SQL Server 2022 (16.x), this behavior is slightly different. Only one VLF is created if the grow...
A free graphical user interface, Oracle SQL Developer allows database users and administrators to do their database tasks in fewer clicks and keystrokes. A productivity tool, SQL Developer's main objective is to help the end user save time and maximize the return on investment in the Oracle Da...
什么是 LSM 虽然大家都是叫它 LSM 树,听着很像是一个树状的数据结构,但严格意义上,它是一种存储结构,全称Log-Structured-Merge-Tree,即日志结构合并树 很多NoSQL存储都是采用 LSM 树进行支撑的,如HBase、LevelDB、RocksDB 等 它的核心其实是牺牲部分读性能(存储分层设计),追求更好的写性能(顺序写) 那么问题...
A free graphical user interface, Oracle SQL Developer allows database users and administrators to do their database tasks in fewer clicks and keystrokes. A productivity tool, SQL Developer's main objective is to help the end user save time and maximize the return on investment in the Oracle Da...
Data synchronization involves the primary database sending transaction log records to the secondary database.Pomembno An availability database is sometimes called a database replica in Transact-SQL, PowerShell, and SQL Server Management Objects (SMO) names. For example, ...
Azure SQL Managed Instance is a scalable cloud database service that's always running on the latest stable version of theMicrosoft SQL Server database engineand a patched OS with99.99% built-in high availability, offering close to 100% feature compatibility with SQL Server. PaaS capabilities built...
Virtual log file growthIn previous versions of SQL Server, if the next growth is more than 1/8 of the current log size, and the growth is less than 64 MB, four VLFs were created. In SQL Server 2022 (16.x), this behavior is slightly different. Only one VLF is created if the growth...
Virtual log file growthIn previous versions of SQL Server, if the next growth is more than 1/8 of the current log size, and the growth is less than 64 MB, four VLFs were created. In SQL Server 2022 (16.x), this behavior is slightly different. Only one VLF is created if the growth...
In addition, if the server was built using WITH_SYSTEMD, the server now includes every systemd message in the error log. Added the SHOW PARSE_TREE statement, which shows the JSON-formatted parse tree for a SELECT statement. This statement is intended for testing and development use only, an...
In previous versions of the SSIS catalog, only users in thessis_adminrole can access the views that contain logging output. There is now a newssis_logreaderdatabase-level role that you can use to grant permissions to access the views that contain logging output to users who aren't administr...