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A unified distributed database ready for your transactional, analytical, and AI workloads.

DEPLOY YOUR WAY

OceanBase Cloud

The best way to deploy and scale OceanBase

OceanBase Enterprise

Run and manage OceanBase on your infra

TRY OPEN SOURCE

OceanBase Community Edition

The free, open-source distributed database

OceanBase seekdb

Open source AI native search database

Customer Stories

Real-world success stories from enterprises across diverse industries.

View All
BY USE CASES

Mission-Critical Transactions

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Elastic Scaling for Peak Traffic

Real-time Analytics

Active Geo-redundancy

Database Consolidation

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OceanBase Database

SQL - V4.0.0Enterprise Edition

  • Overview
    • Overview
    • System architecture
    • Compatibility with MySQL
    • Compatibility with Oracle
      • Overview
      • SQL data types
      • Built-in functions
      • System views
    • Limits
  • Get Started
    • Quick start with OceanBase Database
    • Hands on for OceanBase SQL
      • Usage notes
      • Basic SQL operations (MySQL mode)
      • Basic SQL operations (Oracle mode)
    • Build applications (MySQL Mode)
      • Connect Python applications to OceanBase Database
      • Connect Java applications to OceanBase Database
      • Connect C applications to OceanBase Database
    • Build applications(Oracle Mode)
      • Connect Python applications to OceanBase Database
      • Connect Java applications to OceanBase Database
      • Connect C applications to OceanBase Database
    • Experience OceanBase advanced features
      • Experience scalable OLTP
        • Run the TPC-C benchmark in OceanBase Database
        • Experience the hot row update capability of OceanBase Database
      • Experience operational OLAP
      • Experience parallel import and data compression
      • Experience the multitenancy feature
  • Develop
    • Develop (MySQL Mode)
      • Connect to Oceanbase Database with client
        • Overview
        • Connect to an OceanBase Database tenant by using a MySQL client
        • Connect to an OceanBase Database tenant by using OBClient
        • Connect to OceanBase Database by using ODC
        • Java application
          • OceanBase Connector/J
          • Java APIs
          • Connect Java applications to OceanBase Database
        • C application
          • OceanBase Connector/C
          • C API functions
          • Connect C applications to OceanBase Database
        • Python applications
        • SpringBoot connection example
        • SpringBatch connection example
        • Example of Database connection pool configuration
          • Overview of database connection pool configuration
          • Example of configuring a Tomcat connection pool
          • Example of configuring a C3P0 connection pool
          • Example of configuring a Proxool connection pool
          • Example of configuring a HiKariCP connection pool
          • Example of configuring a DBCP connection pool
          • CommonPool configuration example
          • Example of configuring a JDBC connection pool
        • SpringJDBC connection example
        • SpringJPA connection example
        • Hibernate connection example
        • MyBatis connection example
      • Create and manage database objects
        • About DDL statements
        • View the currently connected database
        • Change the password of a user
        • Data type
          • General data types
          • Unsupported data types
        • Create and manage tables
          • About tables
          • Create a table
          • About auto-increment columns
          • About types of column constraints
          • About table structure modification
          • About table clearing
          • About table dropping
          • Flash back a dropped table
          • About table privileges
        • Create and manage partition tables
          • About partitioned tables
          • Create a partitioned table
          • Manage a partitioned table
          • Create a subpartitioned table
          • Manage a subpartitioned table
          • Partition routing
          • Indexes on partitioned tables
          • Suggestions on using partitioned tables
        • Create and manage indexes
          • About indexes
          • Create an index
          • Drop an index
        • Create and manage views
          • About views
          • Create a view
          • Modify a view
          • Delete a view
        • Create and manage sequences
          • About sequences
          • Create a sequence
          • Modify a sequence
          • Delete a sequence
        • Create and manage triggers
          • About triggers
          • Create a trigger
          • Delete a trigger
      • Query
        • About queries
        • Single-table queries
        • Conditional queries
        • ORDER BY queries
        • GROUP BY queries
        • Use the LIMIT clause in queries
        • Query data from multiple tables
          • About multi-table join queries
          • INNER JOIN queries
          • OUTER JOIN queries
          • Subqueries
        • Use operators and functions in a query
          • Use arithmetic operators in queries
          • Use numerical functions in queries
          • Use string connectors in queries
          • Use string functions in queries
          • Use datetime functions in queries
          • Use type conversion functions in queries
          • Use aggregate functions in queries
          • Use NULL-related functions in queries
          • Use the CASE conditional operator in queries
          • Use the SELECT FOR UPDATE statement to lock query results
        • Execution plan
          • View an execution plan
          • Understand an execution plan
        • Use SQL hints in queries
        • Variables of query timeout
      • DML statements and transactions
        • DML statement
          • About DML statements
          • About the INSERT statement
          • UPDATE statements
          • About the DELETE statement
          • About the REPLACE INTO statement
        • Transactions
          • About transaction control statements
          • Start a transaction
          • Transaction savepoints
          • Commit a transaction
          • Roll back a transaction
          • About transaction timeout
      • Common errors and solutions
        • About error codes
        • Database connection error
        • About timeout
          • Idle session timeout
          • Transaction timeout errors
        • About user
          • Locked user
          • Incorrect user password
        • About table
          • Table already exists
          • Table does not exist
          • Invalid use of NULL value
        • About constraint
          • Unique key conflict
          • Foreign key conflict
        • About SQL commands
          • Data truncation
    • Develop (Oracle Mode)
      • Connect to Oceanbase Database with client
        • Overview
        • Connect to an OceanBase tenant by using an Oracle client
        • Connect to an OceanBase Database tenant by using OBClient
        • Connect to OceanBase Database by using ODC
      • Application development
        • Java application
          • OceanBase Connector/J
          • Java APIs
          • Connect Java applications to OceanBase Database
        • Python application
          • OceanBase Connector/J in Python
          • Python APIs
          • Connect Python applications to OceanBase Database
        • 300.c-application-1
          • OceanBase Connector/C
          • OBCI APIs
          • Connect C applications to OceanBase Database
      • Create and manage database objects
        • About DDL statements
        • View the currently connected database
        • Change the password of a user
        • Data type
          • General data types
          • Unsupported data types
        • Create and manage tables
          • About tables
          • Create a table
          • Define an auto-increment column by using the SEQUENCE keyword
          • About types of column constraints
          • About table structure modification
          • About table clearing
          • About table dropping
          • Flash back a dropped table
          • About table privileges
        • Create and manage partition tables
          • About partitioned tables
          • Create a partitioned table
          • Manage a partitioned table
          • Create a subpartitioned table
          • Manage a subpartitioned table
          • Partition routing
          • Indexes on partitioned tables
          • Suggestions on using partitioned tables
        • Create and manage indexes
          • Drop an index
          • About indexes
          • Create an index
        • Create and manage views
          • About views
          • Create a view
          • Modify a view
          • Drop a view
        • Create and manage sequences
          • About sequences
          • Create a sequence
          • Modify a sequence
          • Delete a sequence
        • Create and manage synonyms
          • About synonyms
          • Create a synonym
          • Delete a synonym
        • Create and manage triggers
          • About triggers
          • Create a trigger
          • Modify a trigger
          • Delete a trigger
          • Enable or disable a trigger
      • Query
        • About queries
        • Single-table queries
        • Conditional queries
        • ORDER BY queries
        • GROUP BY queries
        • Use Row_Limiting_Clause in queries
        • Query data from multiple tables
          • About multi-table join queries
          • INNER JOIN queries
          • OUTER JOIN queries
          • Subqueries
        • Use operators and functions in a query
          • Use arithmetic operators in queries
          • Use numerical functions in queries
          • Use string concatenation operators in queries
          • Use string functions in queries
          • Use datetime functions in queries
          • Use type conversion functions in queries
          • Use aggregate functions in queries
          • Use NULL-related functions in queries
          • Use CASE functions in queries
          • Use the SELECT FOR UPDATE statement to lock query results
        • Execution plan
          • View execution plans of queries
          • Understand an execution plan
        • Use SQL hints in queries
        • About query timeout variables
      • DML statements and transactions
        • DML statement
          • About DML statements
          • About the INSERT statement
          • UPDATE statements
          • About the MERGE statement
          • About the DELETE statement
        • Transactions
          • About transaction control statements
          • Start a transaction
          • Transaction savepoints
          • Commit a transaction
          • Roll back a transaction
          • About transaction timeout
      • Common errors and solutions
        • Overview
        • Database connection error
        • About timeout
          • Idle session timeout
          • Transaction timeout errors
        • About user
          • Locked user
          • Incorrect user password
        • About object
          • Object already exists
          • Object does not exist
        • About constraint
          • Unique key conflict
          • Foreign key conflict
        • About sql
          • Data type inconsistency
  • Deploy
    • Overview
    • Deployment procedure
    • Preparations before deployment
      • Prepare servers
      • Configure servers
      • Prepare installation packages
    • HA solution for OceanBase clusters
    • Deploy through the CLI
      • Configure the deployment environment
        • Install oat-cli
        • Use oat-cli to configure the deployment environment
        • Configure the clock source
        • Upload installation packages
        • Configure host information
        • Check the environment before deployment
      • Deploy OCP
        • Deployment description
        • Generate a configuration file
        • Start deployment
        • Check after deployment
      • Deploy the OceanBase cluster
        • Deploy a single-replica OceanBase cluster
        • Deploy a three-replica OceanBase cluster
      • Deploy OBProxy
        • Deploy OBProxy through the CLI
      • Create an OceanBase tenant
        • View resources available for a business tenant
        • Create a tenant
        • Verify after deployment
      • Deploy OMS
        • Deployment description
        • Modify the configuration file
        • Start deployment
        • Check after deployment
      • Deploy ODC
        • Deployment description
        • Modify the configuration file
        • Start deployment
        • Check after deployment
  • Migrate
    • Overview
    • Migrate data by using SQL scripts
    • Migrate data by using MySQLDump
    • Migrate data by using DataX
    • Migrate data by using OUTFILE statements

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Overview System architecture Compatibility with MySQL Overview SQL data types Built-in functions System views Limits Quick start with OceanBase Database Usage notes Basic SQL operations (MySQL mode) Basic SQL operations (Oracle mode) Connect Python applications to OceanBase Database Connect Java applications to OceanBase Database Connect C applications to OceanBase Database Connect Python applications to OceanBase Database Connect Java applications to OceanBase Database Connect C applications to OceanBase Database Experience operational OLAP Experience parallel import and data compression Experience the multitenancy feature Overview Deployment procedure Prepare servers Configure servers Prepare installation packages HA solution for OceanBase clustersOverview Migrate data by using SQL scripts Migrate data by using MySQLDumpMigrate data by using DataX Migrate data by using OUTFILE statements
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  4. V4.0.0
iconOceanBase Database
SQL - V 4.0.0Enterprise Edition
SQL
KV
  • V 4.4.2
  • V 4.3.5
  • V 4.3.3
  • V 4.3.1
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Overview

Last Updated:2023-07-24 09:52:12  Updated
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What is on this page
Core features
High availability
High compatibility
Horizontal scaling
Low costs
Real-time HTAP
High reliability
High security

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OceanBase Database is Ant Group's proprietary native distributed database management system (DBMS), which is the only DBMS in the world that has broken both TPC-C and TPC-H records. It has been supporting the Double 11 Shopping Festival (the biggest online shopping festival in the world) for 9 consecutive years. OceanBase Database has innovatively launched a new city-level disaster recovery standard of "Five IDCs across Three Cities". With an integrated architecture, it achieves both the scalability of distributed architecture and the performance of centralized architecture.

OceanBase Database supports both online transaction processing (OLTP) and online analytical processing (OLAP) workloads with a set of engines. It features strong data consistency, high availability, high performance, and online scalability. It has a strong compatibility with SQL standards and mainstream relational databases such as MySQL and Oracle. In addition, OceanBase Database is cost-effective and transparent to applications. Up to now, OceanBase Database has helped more than 400 customers to upgrade their mission-critical systems.

Core features

High availability

OceanBase Database has launched a solution of "Five IDCs across Three Cities", which sets forth a new standard for lossless disaster recovery in the financial industry. The DBMS supports lossless disaster recovery not only within the same city but also across different cities, which reaches the financial-grade disaster recovery standard level 6 (Recovery Point Objective (RPO) = 0, Recovery Time Objective (RTO) < 8 seconds).

High compatibility

OceanBase Database is compatible with not only Oracle and MySQL's common features but also their advanced features, such as procedural language and triggers. OceanBase Migration Assessment (OMA) and OceanBase Migration Service (OMS) are also provided to support migration assessment and data migration respectively. In addition, OMS supports reverse synchronization to ensure data migration security, especially in mission-critical scenarios.

Horizontal scaling

OceanBase Database supports rapid scale-in or scale-out to meet different business needs, and uses a quasi in-memory architecture to achieve high performance. An OceanBase Database cluster can hold thousands of nodes, supporting a maximum data volume of more than 3 PB for a single cluster, and a maximum number of a trillion rows for a single table.

Low costs

Based on the log-structured merge-tree (LSM-tree), OceanBase Database adopts a high-compression storage engine, which reduces the storage costs by 70% to 90%. This DBMS supports the multi-tenant feature, which means that the same cluster can serve different businesses with the data of one tenant isolated from that of others. With these features, the deployment and O&M costs are reduced.

Real-time HTAP

OceanBase Database uses the same database engine to perform online real-time transactions and real-time analysis on the same set of data. Multiple replicas of the same set of data can be stored in different forms for different purposes. This fundamentally ensures data consistency.

High reliability

OceanBase Database boasts the integrated architecture for both centralized and distributed modes. The OceanBase team has developed OceanBase Database in-house for 12 years and has full control over its source code. OceanBase Database has been supporting the Double 11 Shopping Festival for 9 consecutive years.

High security

OceanBase Database has a complete role and permission management system, which provides transparent encryption of data for storage and communication. It implements most of the security functions required by enterprises, such as SSL, auditing, Label Security, IP allowlist.

Next topic

System architecture
Next
What is on this page
Core features
High availability
High compatibility
Horizontal scaling
Low costs
Real-time HTAP
High reliability
High security