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OceanBase Diagnostic Tool

V4.3.0

obdiag Overview
obdiag installation
obdiag configuration
One-click Cluster Inspection
- One-click cluster inspection
- Detailed explanation of cluster inspection indicators
One-click Information Gathering
- One-click routine information collection
  - OceanBase cluster log collection
  - Host information collection
  - SQL details collection
  - Stack information collection
  - Flame Picture/Bian Que Picture Collection
  - ASH report collection
  - Collect table-related information
  - Cluster parameter collection
  - Variable collection
  - clog/slog collection
  - DBMS_XPLAN information collection
  - Core file collection
  - AWR report collection
  - obproxy log collection
  - OMS log collection
  - Collect all information
- One-click scenario-based information collection
  - Overview
  - Collect basic cluster information
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  - Collect backup cleanup problem information
  - Collect clog disk full problem information
  - Collect cluster downtime problem information
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  - Collect CPU high problem information
  - Collect information on delay issues in primary and standby databases
  - Collect I/O problem information
  - Collect log archiving problem information
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  - Collect observer restart information without reason
  - Collect owner-cutting problem information
  - Collect information about hanging transaction issues
  - Collect copy imbalance problem information
  - Collect SQL error reporting information
  - Collect cluster TopSQL information
  - Collect application error information
  - Collect obproxy restart problem information for no reason
  - Collect ODP parameter information
  - Collect unspecified scenario problem information
One-click Diagnostic Analysis
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- One-click root cause analysis
- Root cause analysis scenario: disconnection
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- Root cause analysis scenario: clog disk is full clog_disk_full
- Root cause analysis scenario: log error log_error
- Root cause analysis scenario: DDL failure ddl_failure
- Root cause analysis scenario: Troubleshooting index build execution error index_ddl_error
- Root cause analysis scenario: transaction disconnection scenario transaction_disconnection
- Root cause analysis scenario: transaction execution times out and error transaction_execute_timeout
- Root cause analysis scenario: transaction does not end and error transaction_not_ending is reported
- Root cause analysis scenario: transaction other errors transaction_other_error
- Root cause analysis scenario: transaction rollback error transaction_rollback
- Root cause analysis scenario: transaction wait timeout error transaction_wait_timeout
- Root cause analysis scenario: OMS full migration exception oms_full_trans
- Root cause analysis scenario: OMS obcdc component analysis oms_obcdc
- Root cause analysis scenario: suspended transaction suspend_transaction
- Root cause analysis scenario: Unit GC exception unit_gc
- Root cause analysis scenario: OceanBase cluster playback card
- Root cause analysis scenario: OceanBase cluster memory explosion
- Root cause analysis scenario: Abnormal deletion of OBServer node
- Root cause analysis scenario: GC troubleshooting gc_troubleshooting
- Root cause analysis scenario: Schema leak schema_leak
- Root cause analysis scenario: partition split scheduling error split_schedule_error
- Root cause analysis scenario: weak read problem troubleshooting weak_read_troubleshooting
- Root cause analysis scenario: SQL execution memory is too high execute_memory_high
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- Internal table name fuzzy matching information insight
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- Information insights into locks held on a certain table
- Cluster long transaction information information insight
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- clog log volume/capacity statistics
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Release Notes
- obdiag V4.2.0
- obdiag V4.1.0
- obdiag V4.0.0
- obdiag V3.7.2
- obdiag V3.7.1
- obdiag V3.7.0
- obdiag V3.6.0
- obdiag V3.5.0
- obdiag V3.4.0
- obdiag V3.3.0
- obdiag V3.2.0
- obdiag V3.1.0
- obdiag V3.0.0
- obdiag V2.6.0
- obdiag V2.5.0
- obdiag V2.4.0
- obdiag V2.3.0
- obdiag V2.2.0
- obdiag V2.1.0
- obdiag V2.0.0
- obdiag V1.6.2
- obdiag V1.6.1
- obdiag V1.6.0
- obdiag V1.5.2
- obdiag V1.5.1
- obdiag V1.5.0
- obdiag V1.4.0
- obdiag V1.3.0

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Root cause analysis scenario: Unit GC exception unit_gc

Last Updated：2026-06-30 15:09:40 Updated

Applicable scenarios

This article is suitable for root cause analysis of the unit gc class, based on OceanBase database internal table data and logs.

Currently, OceanBase database V4.0.0.0 and later versions are supported. When using obdiag, you need to configure the cluster information in the ~/.obdiag/config.yml file according to your choice, or configure the cluster information through the --config option in the command.

Attention

Due to the timeliness of internal data, only current data is supported for analysis.

Usage example

Configure analysis scenarios, executed by default:

obdiag rca run --scene=unit_gc

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