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Query OCP server time

Last Updated：2023-11-23 07:52:12 Updated

Description

You can call this operation to query the OCP server time to check the synchronization between the local time and the server time.

Call description

Prerequisite

You can call this API without authentication.

Request path

GET /api/v2/time

Request parameters

None.

Response parameters

The server time is returned in the text format.

Examples

Sample request

GET /api/v2/time

Sample response

2020-11-11T15:46:27.316+08:00

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OceanBase Cloud Platform

V4.2.1

Document Overview
Product Introduction
- What is OceanBase Cloud Platform?
- Feature differences between OCP Enterprise Edition and OCP Community Edition
- System architecture
- Features
- Limits
  - System requirements
  - Dependencies
Deployment OceanBase Cloud Platform (OCP)
- Deploy OceanBase Cloud Platform (OCP) Enterprise Edition
  - Deployment overview
    - Deploy OCP cluster in the Single-node
    - Deploy OCP cluster in the High-availability
  - Prepare the deployment environment
    - Install OAT
    - Add a server
    - Check the environment
  - Deploy OCP
    - Plan resources
      - Planning resources of a single node OCP
        OCP-Server specifications
        MetaDB resources
        MonitorDB resources
        Host resources
      - Planning resources of a high availability OCP
        OCP-Server specifications
        MetaDB resources
        MonitorDB resources
        Host resources
    - Deploy OCP
      - Deploying a single point of OCP
        Prepare installation media
        Create MetaDB
        Install OCP
        Initialize system parameters
      - Deploying a high availability of OCP
        Prepare installation media
        Create MetaDB
        Install OCP
        Register an OCP cluster
        Initialize system parameters
    - Check after deployment
  - Deployment FAQ
    - Optimize MonitorDB parameters
    - F5 Big-IP LTM and alert configuration
      - Connect OBProxy to F5 Big-IP LTM
      - Connect OCP-Console to F5 Big-IP LTM
      - Monitor the OCP service health
    - Ubuntu deployment FAQ
    - EulerOS deployment FAQ
    - Client requirements
    - Start and stop OCP
  - Appendix
    - Uninstall OCP
- Deploy OceanBase Cloud Platform (OCP) Community Edition
  - Overview
  - Installation process
  - Installation planning
    - User planning
    - Host planning
    - Disk and directory planning
    - Port planning
  - Prepare for the installation
  - Deploy OCP on the GUI
  - Use Docker to deploy OCP
  - Post-deployment check
  - Appendix
    - Install Docker
    - Uninstall OCP
    - Restart OCP
    - FAQ about deployment
Upgrade OceanBase Cloud Platform (OCP)
- Upgrade OceanBase Cloud Platform (OCP) Enterprise Edition
  - Overview
  - Considerations
  - Preparations
  - Upgrade OCP
    - Take over OCP
    - Upgrade OCP
  - Verify after upgrade
    - Verify the cluster feature
    - Verify the tenant feature
    - Verify the host feature
    - Verify the software package feature
    - Verify the OBProxy feature
    - Verify the backup and restore feature
    - Verify the alert feature
    - Verify the task feature
    - Verify the password box feature
  - Appendix
    - Change a user's password
    - Version mapping
- Upgrade OceanBase Cloud Platform (OCP) Community Edition
  - Upgrade OCP on the GUI
  - Upgrade OCP using Docker containers
  - Post-upgrade check
Quick Start
- OCP operations
- Log on to the OCP console
- Upload a software package
- Add a host
- Create a cluster
- Create a tenant
- Create a user
- Create an OBProxy cluster
Clusters Management
- Overview
- Create a cluster
  - Create a distributed cluster
  - Create a standalone centralized database
- Manage clusters
  - Create a standby cluster
  - View the details of a cluster
  - Upgrade a standalone centralized database to a distributed cluster
  - Take over a cluster
  - Restart a cluster
  - Stop a cluster
  - Delete a cluster
  - Change the password
  - Enable automatic detection of deadlocks
  - Disable automatic detection of deadlocks
  - Disable SQL collection
  - View the SQL collection history
- Manage Arbitration Service
  - Arbitration service Overview
  - Create an arbitration service
  - Stop an arbitration service
  - Start an arbitration service
  - Upgrade an arbitration service
  - Restart an arbitration service
  - Delete an arbitration service
  - Add an arbitration service
  - Replace an arbitration service
  - Remove an arbitration service
- Manage zones of a cluster
  - Add a zone
  - Restart a zone
  - Stop a zone
  - Delete a zone
- Manage OBServers of a cluster
  - Add an OBServer node
  - Restart a faulty OBServer node
  - Stop an OBServer service
  - Stop the observer process
  - Replace an OBServer node
  - Reinstall an OBServer
  - Delete an OBServer
- Upgrade an OceanBase cluster
- View the topology of a cluster
- Overview of cluster tenant management
- Manage cluster resource
  - View the unit distribution
  - View resource usage
- Manage major compaction of a cluster
  - Modify the major compaction settings of a cluster
  - Perform a major compaction
  - View details of major compaction
  - View major freeze statistics
- Manage cluster parameter templates
- Manage cluster parameters
  - Parameter types
  - View parameters
  - Modify parameters
  - View the history of parameter changes
Tenants Management
- Tenant and resource management
- View cluster overview information
- Create a primary tenant
- Manage unit specifications
- View OCP resource unit specifications
- Manage tenants
  - Overview of the Tenant Details page
  - Create a standby tenant
  - Copy a tenant
  - Lock a tenant
  - Delete a tenant
  - Change the password of the sys tenant
  - Configure end-to-end diagnostics for a tenant
- Modify the allowlist of a tenant
- Modify zone priorities
- Manage topulogy of a tenant
  - View the topology of a tenant
  - View the topology of primary/standby relationships of a tenant
- Manage replicas of a tenant
  - Add a replica
  - Edit a tenant replica in a zone
  - Delete a tenant replica from a zone
- Manage databases
- Manage users and permissions under a tenant
  - Manage users in a MySQL tenant
  - Manage user under an Oracle tenant
    - User overview under an Oracle tenant
    - Create a user under an Oracle tenant
    - Change the password of a user under an Oracle tenant
    - Delete a user under an Oracle tenant
    - Create a role under an Oracle tenant
    - Manage users
    - Manage roles
  - System privileges in a MySQL tenant
- Manage resource isolation
  - Overview
  - Create a resource group
  - Create a resource isolation plan
  - Enable or disable a resource isolation plan
  - Modify a resource isolation plan
  - Delete a resource isolation plan
  - Modify a resource group
  - Delete a resource group
- Manage the resources of a tenant
- Manage major compaction under a tenant
  - Modify major compaction settings of a tenant
  - Details of tenant major compaction
  - Perform a major compaction
- Manage tenant parameter templates
- Manage tenant parameters
  - View the parameters
  - Modify a parameter
  - View the parameter modification history
OBProxies management
- OBProxy management overview
- Create an OBProxy cluster
- Manage OBProxy Clusters
  - View OBProxy clusters list
  - Add a connectable OceanBase cluster
  - Manage load balancing
  - Change the password of the proxysys user
  - Change the password of the proxyro user
  - Delete an ODP cluster
  - Upgrade an OBProxy cluster
  - Stop or start an ODP cluster
  - Restart an ODP cluster
  - Delete a connected OceanBase cluster
  - Manage the proxyro account
- Manage OBProxy Servers
  - Add an ODP
  - Take over an OBProxy
  - Delete an OBProxy
  - Restart an ODP
  - Stop or start an ODP
  - Remove an OBProxy
  - Launch an OBProxy
  - Upgrade an OBProxy
  - Refresh OBProxy configurations
- Request analysis
- Parameter management
- Client configuration
- OBProxy parameters descpription
Hosts management
- Host management operations
- Add a host
- View the details of tasks on a host
- Modify a host
- Restart OCP-Agent
- Reinstall OCP Agent
- Remove a host
- Perform host standardization checks
- Host standardization check items
- OCP-Agent processes
- OCP-Agent O&M Script Instructions
Monitoring and Alerts management
- Manage monitoring
  - OCP Overview
  - View database performance
  - View host performance
  - View the performance and SQL monitoring data of a tenant
  - View transaction performance data
  - View storage and cache monitoring data
  - View host resources
  - View service monitoring data
  - View system monitoring data
  - View performance monitoring
  - Drill-down monitoring
- Use the alert feature
  - Overview
  - Alert-related concepts
  - Manage alert rules
    - Create an alert rule
    - View an alert rule
    - Copy an alert rule
    - Edit an alert rule
    - Delete an alert rule
    - Alert rule groups
    - Export alert rule configurations
  - Manage alert templates
    - Create an alert template
    - Set alert objects
    - Export alert templates
    - View an alert template
    - Copy an alert template
    - Edit an alert template
    - Delete an alert template
  - Manage alert channels
    - Create an alert channel
    - View an alert channel
    - Edit an alert channel
    - Copy an alert channel
    - Delete an alert channel
    - Examples of alert channel configuration
    - Examples of alert channel configuration
  - Manage alert push
    - Create an alert push
    - View an alert push
    - Edit an alert push
    - Delete an alert push
  - View alert events
  - Manage blocking conditions
    - Create a blocking condition
    - Edit a blocking condition
    - Delete a blocking condition
  - OCP alert template tag
  - Optional monitoring metrics for custom alerts
- Use the inspection feature
  - Inspection
  - Configure inspection items
  - Configure Scheduling Rules
    - Configure a scheduling rule for a single object
    - Configure a global scheduling rule
  - Initiate Inspection
    - Initiate an inspection for a single object
    - Initiate a global inspection
  - View an inspection task
  - Manage Inspection reports
    - View an inspection report
    - Download an inspection report
- Use the custom monitoring feature
  - Overview
  - View collection items
  - Manage indicator items
    - Create a metric
    - Manage metrics
  - Manage charts
    - Create a chart
    - Manage charts
  - OCP metrics
Diagnosis and tuning fuctions
- SQL Diagnostics
  - SQL Diagnostics Introduction
    - SQL diagnostics overview
    - SQL statement execution statistics
    - SQL execution plans
  - View the OceanBase Autonomy Service page
  - Suspicious SQL diagnostics
  - TopSQL diagnostics
  - View Comparison of Top SQL Statements
  - SlowSQL diagnostics
  - ParallelSQL diagnostics
  - High Risk SQL diagnostics
  - New SQL diagnostics
  - View details of an SQL statement
  - View outlines
  - View the SQL collection enable/disable history
  - View SQL request analysis
  - SQL performance diagnosis related parameter configuration
- Transaction Diagnostics
  - Overview of transaction
  - Diagnostics Transaction
  - Diagnose XA transactions and suspended transactions
- Manage sessions
  - Manage the sessions of a tenant
  - View session statistics
  - View the deadlock history
- View the Optimization Center page
- View the capacity center
- View diagnostics reports
  - Manage ASH report
  - Performance report
Use backup and recovery
- Overview
- Backup and recovery guide
- Backup and recovery overview
- Backup now
  - Back up cluster now
  - Back up tenant now
- Regular backup
  - Manage cluster-level backup strategy
    - Create a cluster-level backup strategy
    - Modify a cluster-level backup strategy
    - Delete a cluster-level backup strategy
    - Pause backup scheduling
    - View a cluster-level backup stategy
  - Manage tenant-level backup strategy
    - Create a tenant-level backup strategy
    - Modify a tenant-level backup strategy
    - Delete a tenant-level backup strategy
    - Pause backup scheduling
    - View a tenant-level backup stategy
- Manage backup tasks
  - View backup tasks
  - View second backup tasks
- Initiate a recovery task
- Regular recovery
  - Create a sampling strategy for recovery
  - View sampling strategies
  - View sampling tasks
- View recovery tasks
- Manage backup and recovery service
  - View services
  - Install a service
  - Add a node
  - Upgrade the version of a service
  - Update service configurations
  - Copy a service
  - Delete a service
  - Stop a service on a node
  - Restart a service on a node
  - View O\&M tasks
  - Uninstall a service on a node
Disaster recovery management
- Switching primary and standby tenants
  - Switchover
  - Failover
  - Decouple a standby tenant from its primary tenant
- Switching primary and standby databases
  - Routine primary/standby cluster switchover
  - Primary/Standby cluster switchover for disaster recovery
  - Decouple a standby cluster from the primary cluster
  - Start the original primary cluster in read-only mode after a failover
- OCP Manage OCP clusters in the multi-cluster mode
  - OCP multi-cluster mode overview
  - Register an OCP cluster
  - View Leader \& Follower Details
  - Manage OCP cluster parameters
  - Switch an OCP cluster in daily maintenance
  - Switch an OCP cluster in a failover
  - Delete a faulty follower OCP cluster
  - Unbind a leader and a follower OCP cluster
  - Enable the OCP multi-cluster mode
- OCP Manage OCP in multi-zone mode
  - Multi-zone overview
  - View details of multiple zones
  - Manage parameters in multi-zone mode
Log service
- Query logs
- Download logs
- Configure trace query parameters
- Trace query
- About OpenSearch
Software packages management
- Upload a software package
- Download a software package
- Delete a software package
System management
- Manage tasks
- View Operation Audit
- Manage system parameters
  - View system parameters
  - Modify system parameters
  - OCP configuration parameters
- Manage roles
  - Role overview
  - Create a role
  - Copy a role
  - View a role
  - Edit a role
  - Delete a role
  - Default OCP roles
- Manage users
  - Users overview
  - Create a user
  - View users
  - Edit a user
  - Copy a user
  - Change a user password
  - Delete a user
  - Logon history
- User center management
  - Configure personal information
  - Change your logon password
  - Manage password box
    - Create a connection
    - Export connection credentials
    - Import connection credentials
    - Share connection credentials
    - Edit connection credentials
    - Delete connection credentials
    - Batch operations on connection credentials
    - Accept a connection
    - Ignore a connection
  - Log off the OCP console
SQL Tuning Practices
- Locate General Abnormal SQL Statements
  - How can I locate SQL statements with high CPU load in a tenant?
  - How can I locate slow SQL statements that take a long time in a tenant?
  - How can I locate SQL statements for full-table scans in a tenant?
  - How can I locate distributed SQL statements in a tenant?
  - How can I locate remote SQL statements in a tenant?
  - How can I locate slow hard-parsed SQL statements in a tenant?
  - How can I locate erroneous SQL statements in a tenant?
- Customize Abnormal SQL Statement Determining Rules
  - Conditions
  - Custom column rules
- General SQL Performance Tuning Scenarios
  - Execution Plan Optimization
    - SQL statement performance deterioration caused by plan changes
  - Index Optimization
    - No suitable indexes
    - Inappropriate index of an SQL statement
    - Invalid index of an SQL statement
O&M Best practices
- Upgrade an OceanBase cluster
- Migrate a resource unit from an OceanBase Database tenant
- Expand the high availability of OceanBase clusters and tenants
- Reduce the high availability of OceanBase clusters and tenants
- Scale out an OceanBase cluster and scale up an OceanBase Database tenant
- Scale in an OceanBase cluster and scale down an OceanBase Database tenant
- Troubleshoot host issues in an OceanBase cluster
- Migrate an OceanBase cluster to another IDC
- Perform a failover between primary and standby OceanBase clusters for disaster recovery in a scenario with two IDCs
- Scale out an OBProxy cluster
- Scale in an OBProxy cluster
- Replace an OBProxy
- Back up an OceanBase cluster
- Use the backup and restore module to restore data
- Monitor the business load of OceanBase Database
- Perform an inspection in OCP to detect potential risks in an OceanBase cluster
- Check clog synchronization
- Check the NIC rate
- Check the availability of an auto-increment column
- Send alert messages to a DingTalk group
- Send alert messages to a Feishu group
- Send alert messages to a WeChat Enterprise group
- Send alert messages through email
- Push alert messages through HTTP
Reference guide
- Alarm reference
  - Alert Reference
  - OceanBase alerts
    - ob_cannot_connected
    - ob_cluster_rs_not_same
    - ob_cluster_status_check_failed
    - ob_cluster_exists_inactive_server
    - ob_cluster_exists_index_fail_table
    - ob_cluster_frozen_version_delta_over_threshold
    - ob_cluster_merge_error
    - ob_cluster_merge_timeout
    - ob_cluster_no_frozen
    - ob_cluster_no_merge
    - ob_cluster_operation_info
    - ob_cluster_sync_failed
    - ob_cpu_assigned_percent_over_threshold
    - ob_cpu_percent_over_threshold
    - ob_host_connection_percent_over_threshold
    - ob_host_disk_readonly
    - ob_tenant_expired_trans_exist
    - ob_host_load1_per_cpu_over_threshold
    - ob_host_partition_count_over_threshold
    - OceanBase log alerts
    - ob_mem_assigned_percent_over_threshold
    - ob_server_sstable_percent_over_threshold
    - ob_tenant_long_trans_exist
    - ob_tenant_operation_info
    - ob_tenant500_mem_hold_over_threshold
    - ob_tenant500_mem_hold_percent_over_threshold
    - tenant_active_memstore_percent_over_threshold
    - tenant_cpu_percent_over_threshold
    - tenant_memstore_percent_over_threshold
    - obproxy_process_dead
    - obproxyd_process_dead
    - obproxy_cannot_connected
    - ob_cluster_sync_delay_time_too_long
    - ob_host_data_disk_percent_over_threshold
    - ob_host_log_disk_percent_over_threshold
    - ob_host_install_disk_percent_over_threshold
    - ob_tenant_exists_expired_xa_trans
    - ob_cluster_active_session_count_over_threshold
    - ob_tenant_active_session_count_over_threshold
    - ob_host_active_session_count_over_threshold
    - ob_tenant_slow_sql_exists
    - ob_tenant_large_trans_exist
    - same_alarm_rule_detect_too_many_targets
    - ob_tenant_expired_trans_exist
    - ob_tenant_long_trans_exist
    - ob_tenant_task_timeout
    - ob_host_task_timeout
    - ob_tenant_log_disk_usage_high
    - ob_tenant_no_compaction
    - ob_tenant_no_frozen
    - ob_tenant_compaction_error
    - host_operation
    - obproxy_host_operation
    - obproxy_cluster_operation
    - ob_host_operation
    - refresh_location_cache_failed
    - ob_tenant_log_stream_degraded
    - arbitration_service_unavailable
    - observer_process_stop
    - obproxyd_process_stop
    - obproxy_process_stop
    - standby_tenant_sync_delay_too_long
    - standby_tenant_sync_status_error
    - obproxy_client_connections_usage_over_threshold
    - ob_tenant_request_queue_over_threshold
    - oas_anomaly_sql_from_anomaly_event_analysis_cpu_percent_high
    - oas_anomaly_sql_from_anomaly_event_analysis_perf_degradation
    - oas_anomaly_sql_from_anomaly_event_analysis_plan_changed
    - oas_anomaly_sql_from_sql_inspection_perf_degradation
    - oas_anomaly_sql_from_sql_inspection_plan_changed
    - os_observer_not_exist
    - refresh_location_cache_failed_by_metric
  - Application alerts
    - ob_cluster_inspection_not_passed
    - ob_host_ssd_wear_indicator_over_threshold
    - ob_host_mem_percent_over_threshold
    - ob_host_net_recv_percent_over_threshold
    - ob_host_net_send_percent_over_threshold
    - ob_host_tcp_retrans_percent_over_threshold
    - ob_host_cpu_percent_over_threshold
    - inc_backup_delay
    - base_backup_fail
    - base_backup_too_long_time_no_one_success_task
    - backup_process_dead
    - backup_storage_capacity_over_threshold
    - backup_storage_capacity_retry_times_exceeded
    - backup_storage_capacity_timeout_or_interrupted
    - ocp_remote_server_time_diff_too_large
    - monitor_exporter_unavailable
    - system_obproxy_unavailable
    - host_unavailable
    - host_ntp_offset_too_large
    - host_ntp_service_not_exist
    - host_agent_res_memory_over_threshold
    - host_agent_open_fd_count_over_threshold
    - host_agent_goroutine_count_over_threshold
    - partition_create_failed
    - obagent_dead
    - host_disk_readonly
    - ic_server_connect_failed Inter-Connector
    - vpc_connect_failed
    - node_load1_peak
    - Host log alerts
    - base_backup_timeout
    - base_secondary_backup_fail
    - ocp_meta_db_disconnected
    - ocp_http_request_timeout
    - ocp_http_request_too_many_errors_occur
    - ocp_alarm_detect_timeout
    - odp_instance_compress_failed
    - odp_instance_expanse_failed
    - odp_sql_execute_failed
    - odp_sql_query_slow
    - agentd_process_stop
    - mgragent_process_stop
    - monagent_process_stop
    - ocp_contingency_failed
    - ob_host_invalid_disk_exists
    - ob_cluster_recyclebin_disk_used_over_threshold
    - ob_host_monitordb_disconnected
    - upgrade_ocp_agent_failed
    - host_agent_version_not_same
  - OAS alerts
    - os_cpu_irq_error
    - os_tsar_cpu_sys_abnormal
    - os_observer_fd_usage
    - os_tsar_cpu_util_full
    - os_tsar_cpu_util_hwm
    - os_kernel_io_hang
    - os_tsar_sda_ioawait
    - os_tsar_nvme_ioawait
    - os_tsar_traffic_drop
    - os_tsar_traffic_error
    - os_observer_core_dump
    - os_nic_1000m_full
    - os_nic_1000m_hwm
    - os_tsar_traffic_overload
    - node_file_root_usage
    - node_file_inode_usage
    - os_kernel_ntp_down
    - os_kernel_ntp_delay
    - node_memory_peak
    - os_home_file_usage
    - node_file_data1_usage
    - node_file_datalog1_usage
  - Appendix
    - Exception handling for OceanBase cluster compaction
    - Apply throttling to an OceanBase cluster
    - Network troubleshooting
    - Execute the alert clearance plan
- API Reference
  - Overview
  - API call description
  - Rules for generating a signature by using AK/SK
  - Task return structure
  - Cluster information
    - Query clusters
    - Create an OceanBase cluster
    - Delete an OceanBase cluster
    - Stop an OceanBase cluster
    - Start an OceanBase cluster
    - Restart an OceanBase cluster
    - Upgrade an OceanBase cluster
    - Query zones of an OceanBase cluster
    - Create a zone for an OceanBase cluster
    - Delete a zone from an OceanBase cluster
    - Stop a zone in an OceanBase cluster
    - Start a zone in an OceanBase cluster
    - Restart a zone in an OceanBase cluster
    - Add an OBServer
    - Delete multiple OBServers at a time
    - Stop an OBServer
    - Start an OBServer
    - Restart an OBServer
    - Replace an OBServer
    - Change the password of an OceanBase cluster
    - Query the parameter metadata of an OceanBase cluster
    - Query parameters of an OceanBase cluster
    - Modify parameters of an OceanBase cluster
    - Query servers
    - Query servers in a zone
    - Perform a switchover pre-check
    - Perform a failover pre-check
    - Perform a switchover
    - Perform a failover
  - Tenant information
    - Query tenants of a cluster
    - Query all tenants
    - Query details about a tenant
    - Create a tenant
    - Create a tenant
    - Delete a tenant
    - Lock a tenant
    - Unlock a tenant
    - Query units of a tenant
    - Delete a unit from a tenant
    - Add a replica for a tenant
    - Delete a replica of a tenant
    - Modify a replica of a tenant
    - Modify zone priorities of a tenant
    - Change the administrator password of a tenant
    - Modify the whitelist of a tenant
    - Query parameters of a tenant
    - Modify parameters of a tenant
    - OceanBase database management
      - Query databases
      - Create a database
      - Modify a database
      - Delete a database
    - Obtain a list of unit specifications
  - Hosts
    - Query regions
    - Query details about a region
    - Add a region
    - Delete a region
    - Query IDCs
    - Query details about an IDC
    - Add an IDC
    - Delete an IDC
    - Query host types
    - Query details about a host type
    - Add a host type
    - Delete a host type
    - Query hosts
    - Query details about a host
    - Add multiple hosts at a time
    - Delete a host
    - Delete multiple hosts at a time
  - Software packages
    - Query software packages
    - Upload a software package
    - Delete a software package
  - OBProxy management
    - Create an OBProxy cluster
    - Delete an OBProxy cluster
    - Query OBProxy clusters
    - Query details about an OBProxy cluster
    - Update configurations of an OBProxy cluster
    - Add an OBProxy
    - Take over an OBProxy
    - Delete an OBProxy
    - Restart an OBProxy
    - Upgrade an OBProxy
    - Add a connectable OceanBase cluster for an OBProxy cluster
    - Remove a connectable OceanBase cluster from an OBProxy cluster
    - Query the parameter metadata of an OBProxy
    - Query parameters of an OBProxy cluster
  - Monitoring
    - Query the metadata of a monitoring metric
    - Query monitoring data
    - Query monitoring data and group the queried data by tag
  - Alerts
    - Call an alert API
    - Alert events
      - Query the alert event list
      - Query alert events
    - Alert notifications
      - Query alert notifications
  - Task management
    - Query tasks
    - Query details about a task
    - Retry a task
    - Roll back a task
    - Query logs of a subtask instance
    - Retry a subtask
    - Skip a subtask
    - Cancel a subtask
  - OCP event history
    - Query event history
  - OceanBase user and privilege management
    - Query database user details
    - Query database user details
    - Create a database user
    - Delete a database user
    - Change the password of a database user
    - Lock a database user
    - Unlock a database user
    - Query the database role details
    - Query database role details
    - Create a database role
    - Delete a database role
    - Query database objects
    - Grant global privileges to a user
    - Revoke global privileges of a user
    - Change global privileges of a user
    - Grant global privileges to a role
    - Revoke global privileges of a role
    - Change global privileges of a role
    - Grant roles to a user
    - Revoke roles of a user
    - Change roles of a user
    - Grant roles to a role
    - Revoke roles of a role
    - Change roles of a role
    - Grant database privileges to a user
    - Revoke database privileges of a user
    - Change database privileges of a user
    - Grant object privileges to a user
    - Revoke object privileges of a user
    - Change object privileges of a user
    - Grant object privileges to a role
    - Revoke object privileges of a role
    - Change object privileges of a role
  - OCP Agent management
    - Query OCP Agent details on a host
    - Stop basic OCP Agent processes on a host
    - Batch stop basic OCP Agent processes on a host
    - Restart basic OCP Agent processes on a host
    - Batch restart basic OCP Agent processes on a host
    - Query OCP Agent processes on a host
    - Restart OCP Agent processes on a host
    - Stop OCP Agent processes on a host
  - SQL performance
    - Query performance indicators of an SQL statement
    - Query the performance indicator trend of an SQL statement
    - Query SQL text
    - Query performance indicators of an execution plan
    - Query the performance indicator trend of an execution plan
    - Query the operator structure of an execution plan
  - Backup and recovery
    - Query backup capabilities of a cluster
    - Create a backup strategy for a cluster
    - Modify the backup strategy of a cluster
    - Delete the backup strategy of a cluster
    - Query the backup strategy of a cluster
    - Query the backup overview of a cluster
    - Query data backup tasks of a cluster
    - Query log backup tasks of a cluster
    - Query recovery tasks of a cluster
    - Immediately back up a cluster
    - Parse cluster backup data
    - Initiate tenant recovery
  - Health examination
    - Query the basic information of an OCP application
    - Query OCP server time
    - Query OCP application status
- Metric reference
  - Overview of metrics
  - Monitoring metrics list
  - OceanBase cluster
    - QPS
    - Query response time
    - TPS
    - Transaction response time
    - Request queue time
    - Number of sessions
    - TPS
    - Number of transaction logs
    - Transaction log volume
    - Time consumed by transaction logs
    - IOPS
    - IO time-consuming
    - I/O Throughput
  - OceanBase Database tenant
    - QPS
    - Response time
    - Sessions
    - SQL execution plan category
    - SQL execution plan time
    - Waiting for events
    - Waiting for event time
    - Request waiting queue
    - Request waiting queue time consuming
    - Tenant CPU cost
    - Tenant thread usage
    - memroy usage pecent
    - MemStore usage
    - Rpc package rt
    - RPC packet throughput
    - Cursors
    - Clog synchronization delay
    - TPS
    - Transaction response time
    - Transaction response time details
    - Number of transaction logs
    - Transaction log volume
    - Time consumed by transaction logs
    - Lock waits
    - Time consumed by lock waits
    - TPS
    - Transaction table read request hits
    - MemStore
    - IOPS
    - IO time-consuming
    - I/O Throughput
    - Cache size
    - Cache hit rates
    - Number of cache requests
  - OBProxy cluster
    - TPS
    - QPS
    - Client connections
    - Server connections
    - Average response time for each SQL statement
    - Average route table queries per second
    - Average bytes in a network request or response
  - Host
    - Linux system load
    - CPU Utilization
    - IOPS
    - Time consumed by I/O operations
    - I/O throughput
    - Network throughput
    - Memory
    - Disk
FAQ
- FAQ about deployment
- FAQ on upgrade
- FAQ on O&M
  - FAQ on accounts and passwords
  - FAQ on host management
  - FAQ on OceanBase cluster
  - FAQ on OceanBase tenants
  - FAQ on OBProxy
  - FAQ on the OCP software package
  - FAQ on backup and recovery
- FAQ on monitoring
  - FAQ on monitoring metrics
  - FAQ on SQL monitoring
  - FAQ about resource usage
  - Use OCP-Agent to pull time-series monitoring data
- FAQ on alerts
- FAQ on the OCP system
- OCP multi-cluster FAQ
Appendix
- OCP error codes
- OCP background tasks
- Tables managed by the daemon
- Component listening port list
- Processes