OceanBase logo

OceanBase

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

Product Overview
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

Global & Multicloud Application

Elastic Scaling for Peak Traffic

Real-time Analytics

Active Geo-redundancy

Database Consolidation

Resources

Comprehensive knowledge hub for OceanBase.

Blog

Live Demos

Training & Certification

Documentation

Official technical guides, tutorials, API references, and manuals for all OceanBase products.

View All
PRODUCTS

OceanBase Cloud

OceanBase Database

Tools

Connectors and Middleware

QUICK START

OceanBase Cloud

OceanBase Database

BEST PRACTICES

Practical guides for utilizing OceanBase more effectively and conveniently

Company

Learn more about OceanBase – our company, partnerships, and trust and security initiatives.

About OceanBase

Partner

Trust Center

Contact Us

International - English
中国站 - 简体中文
日本 - 日本語
Sign In
Start on Cloud

OceanBase

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

Product Overview
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

Global & Multicloud Application

Elastic Scaling for Peak Traffic

Real-time Analytics

Active Geo-redundancy

Database Consolidation

Comprehensive knowledge hub for OceanBase.

Blog

Live Demos

Training & Certification

Documentation

Official technical guides, tutorials, API references, and manuals for all OceanBase products.

View All
PRODUCTS
OceanBase CloudOceanBase Database
ToolsConnectors and Middleware
QUICK START
OceanBase CloudOceanBase Database
BEST PRACTICES

Practical guides for utilizing OceanBase more effectively and conveniently

Learn more about OceanBase – our company, partnerships, and trust and security initiatives.

About OceanBase

Partner

Trust Center

Contact Us

Start on Cloud
编组
All Products
    • Databases
    • iconOceanBase Database
    • iconOceanBase Cloud
    • iconOceanBase Tugraph
    • iconInteractive Tutorials
    • iconOceanBase Best Practices
    • Tools
    • iconOceanBase Cloud Platform
    • iconOceanBase Migration Service
    • iconOceanBase Developer Center
    • iconOceanBase Migration Assessment
    • iconOceanBase Admin Tool
    • iconOceanBase Loader and Dumper
    • iconOceanBase Deployer
    • iconKubernetes operator for OceanBase
    • iconOceanBase Diagnostic Tool
    • iconOceanBase Binlog Service
    • Connectors and Middleware
    • iconOceanBase Database Proxy
    • iconEmbedded SQL in C for OceanBase
    • iconOceanBase Call Interface
    • iconOceanBase Connector/C
    • iconOceanBase Connector/J
    • iconOceanBase Connector/ODBC
    • iconOceanBase Connector/NET
icon

OceanBase Database

SQL - V4.2.1

    Download PDF

    OceanBase logo

    The Unified Distributed Database for the AI Era.

    Follow Us
    Products
    OceanBase CloudOceanBase EnterpriseOceanBase Community EditionOceanBase seekdb
    Resources
    DocsBlogLive DemosTraining & CertificationTicket
    Company
    About OceanBaseTrust CenterLegalPartnerContact Us
    Follow Us

    © OceanBase 2026. All rights reserved

    Cloud Service AgreementPrivacy PolicySecurity
    Contact Us
    Document Feedback
    1. Documentation Center
    2. OceanBase Database
    3. SQL
    4. V4.2.1
    iconOceanBase Database
    SQL - V 4.2.1
    SQL
    KV
    • V 4.6.0
    • V 4.4.2
    • V 4.3.5
    • V 4.3.3
    • V 4.3.1
    • V 4.3.0
    • V 4.2.5
    • V 4.2.2
    • V 4.2.1
    • V 4.2.0
    • V 4.1.0
    • V 4.0.0
    • V 3.1.4 and earlier

    oceanbase.DBA_TAB_SUBPARTITIONS

    Last Updated:2026-04-28 09:23:27  Updated
    Share
    What is on this page
    Purpose
    Columns

    folded

    Share

    Purpose

    The oceanbase.DBA_TAB_SUBPARTITIONS view displays, for each subpartition, the subpartition name, the names of the table and partition to which it belongs, its storage attributes, and statistics generated by the DBMS_STATS package.

    Note

    This view is introduced since OceanBase Database V4.0.0.

    Columns

    Column
    Type
    Nullable?
    Description
    TABLE_OWNER varchar(128) NO The owner of the table.
    TABLE_NAME varchar(128) NO The name of the table.
    PARTITION_NAME varchar(128) NO The name of the partition.
    SUBPARTITION_NAME varchar(128) NO The name of the subpartition.
    HIGH_VALUE mediumtext NO The subpartition expression.
    HIGH_VALUE_LENGTH bigint(20) NO The length of the subpartition expression.
    PARTITION_POSITION bigint(20) NO The position of the partition.
    SUBPARTITION_POSITION bigint(20) NO The position of the subpartition within the partition.
    TABLESPACE_NAME varchar(30) NO The name of the tablespace containing the subpartition.
    PCT_FREE bigint(0) NO This column is currently not supported and defaults to NULL.
    PCT_USED bigint(0) NO This column is currently not supported and defaults to NULL.
    INI_TRANS bigint(0) NO This column is currently not supported and defaults to NULL.
    MAX_TRANS bigint(0) NO This column is currently not supported and defaults to NULL.
    INITIAL_EXTENT bigint(0) NO This column is currently not supported and defaults to NULL.
    NEXT_EXTENT bigint(0) NO This column is currently not supported and defaults to NULL.
    MIN_EXTENT bigint(0) NO This column is currently not supported and defaults to NULL.
    MAX_EXTENT bigint(0) NO This column is currently not supported and defaults to NULL.
    MAX_SIZE bigint(0) NO This column is currently not supported and defaults to NULL.
    PCT_INCREASE bigint(0) NO This column is currently not supported and defaults to NULL.
    FREELISTS bigint(0) NO This column is currently not supported and defaults to NULL.
    FREELIST_GROUPS bigint(0) NO This column is currently not supported and defaults to NULL.
    LOGGING varchar(3) NO This column is currently not supported and defaults to NULL.
    COMPRESSION varchar(8) NO Indicates whether the subpartition is compressed.
    COMPRESS_FOR varchar(30) NO The compression method.
    NUM_ROWS bigint(0) NO This column is currently not supported and defaults to NULL.
    BLOCKS bigint(0) NO This column is currently not supported and defaults to NULL.
    EMPTY_BLOCKS bigint(0) NO This column is currently not supported and defaults to NULL.
    AVG_SPACE bigint(0) NO This column is currently not supported and defaults to NULL.
    CHAIN_CNT bigint(0) NO This column is currently not supported and defaults to NULL.
    AVG_ROW_LEN bigint(0) NO This column is currently not supported and defaults to NULL.
    SAMPLE_SIZE bigint(0) NO This column is currently not supported and defaults to NULL.
    LAST_ANALYZED date NO This column is currently not supported and defaults to NULL.
    BUFFER_POOL varchar(7) NO This column is currently not supported and defaults to NULL.
    FLASH_CACHE varchar(7) NO This column is currently not supported and defaults to NULL.
    CELL_FLASH_CACHE varchar(7) NO This column is currently not supported and defaults to NULL.
    GLOBAL_STATS varchar(3) NO This column is currently not supported and defaults to NULL.
    USER_STATS varchar(3) NO This column is currently not supported and defaults to NULL.
    INTERVAL varchar(3) NO This column is currently not supported and defaults to NO.
    SEGMENT_CREATED varchar(3) NO This column is currently not supported and defaults to NULL.
    INDEXING varchar(3) NO This column currently defaults to NULL.
    READ_ONLY varchar(3) NO This column currently defaults to NULL.
    INMEMORY varchar(8) NO This column currently defaults to NULL.
    INMEMORY_PRIORITY varchar(8) NO This column currently defaults to NULL.
    INMEMORY_DISTRIBUTE varchar(15) NO This column is currently not supported and defaults to NULL.
    INMEMORY_COMPRESSION varchar(17) NO This column currently defaults to NULL.
    INMEMORY_DUPLICATE varchar(13) NO This column currently defaults to NULL.
    INMEMORY_SERVICE varchar(12) NO This column currently defaults to NULL.
    INMEMORY_SERVICE_NAME varchar(1000) NO This column currently defaults to NULL.
    CELLMEMORY varchar(24) NO This column is currently not supported and defaults to NULL.
    MEMOPTIMIZE_READ varchar(8) NO This column currently defaults to NULL.
    MEMOPTIMIZE_WRITE varchar(8) NO This column currently defaults to NULL.

    Previous topic

    oceanbase.DBA_TAB_PARTITIONS
    Last

    Next topic

    oceanbase.DBA_OB_BACKUP_SET_FILES
    Next
    What is on this page
    Purpose
    Columns