(3) Alternate Compaction: When one ObServer is going to compact a person partition, queries over the merged partition are going to be sent to ObServers in other Zones storing replicas of exactly the same partition.
(three) Alternate Compaction: When a person ObServer is about to compact one particular partition, queries within the merged partition will likely be despatched to ObServers in other Zones storing replicas of a similar partition.
From OceanBase two.0, it supports hybrid storage design. Attributes belong to the same tuple are saved in a similar block, though the tuples in precisely the same block are compressed and stored in columnar model.
OceanBase supports materialized watch. OceanBase is often a business DBMS predominantly serving company clients with large-scale data storage and substantial QPS, so it implements materialized view to enhance throughput and reduce latency as a way to reduce the volume of servers required(help save components Value).
In 2013, Alipay chose to halt applying Oracle. Given that the alternative preference MySQL can't ensure potent regularity in between active server and standby server, OceanBase obtained its 1st possibility. From then on, OceanBase isn't open sourced anymore.
(three) Alternate Compaction: When 1 ObServer is about to compact a single partition, queries on the merged partition will be sent to ObServers in other Zones storing SQLShift vs DBCat replicas of exactly the same partition.
Inside the TPC-C benchmark test, which is called the "World Cup" of the database sector, OceanBase broke the world document, which was preserved by Oracle for 9 consecutive many years, building Ant Fiscal the primary Chinese enterprise to major the list ever.
Results in a brand new DDL item which will incorporate statements to execute actions relating to the presented item.
community void append(T type, java.lang.String ddl) Appends the specified ddl of specified sort. If statements of that style exist already With this DDL item it would be the previous of these to become executed.
It truly is designed and optimized for OLTP purposes on relational structured information, while its shared-practically nothing framework also supports OLAP apps.
It really is built and 跨平台DDL转换 optimized for OLTP programs on relational structured info, while its shared-very little structure also supports OLAP programs.
Receives a replica of the DDL object with many of the statements prompted as suitable for the command line Resource in the indigenous databases.
OceanBase implements block cache for Micro Block to speed up large scan question. What's more, it implements a row cache for rows in block cache to speed up compact Oracle转PostgreSQL get question.
OceanBase also supports secondary index. It brings together index keys and desk Main key for secondary index.