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OceanBase Database Proxy

V4.4.1
  • What is ODP?
  • Installation and deployment
    • Overview
    • Deploy ODP by using obd
    • Deploy ODP by using OCP
    • Deploy ODP by using the CLI
    • Deployment modes
  • Basic operations
  • Configuration parameter
    • View and modify parameters
    • Parameter summary
    • Global parameters
      • automatic_match_work_thread
      • block_thread_num
      • cache_cleaner_clean_interval
      • check_tenant_locality_change
      • client_max_connections
      • client_max_memory_size
      • client_session_id_version
      • client_sock_option_flag_out
      • client_tcp_keepcnt
      • client_tcp_keepidle
      • client_tcp_keepintvl
      • client_tcp_user_timeout
      • cluster_count_high_water_mark
      • cluster_expire_time
      • config_server_refresh_interval
      • congestion_fail_window
      • congestion_failure_threshold
      • congestion_retry_interval
      • connection_diagnosis_option
      • connection_pool_mode
      • connect_observer_max_retries
      • current_local_config_version
      • default_buffer_water_mark
      • default_inactivity_timeout
      • delay_exit_time
      • delay_update_entry_interval
      • detect_server_timeout
      • digest_sql_length
      • enable_abort_conn_info
      • enable_async_log
      • enable_async_pull_location_cache
      • enable_auto_restart
      • enable_bad_route_reject
      • enable_binlog_service
      • enable_cached_server
      • enable_causal_order_read
      • enable_client_connection_lru_disconnect
      • enable_client_ip_checkout
      • enable_cluster_checkout
      • enable_compression_protocol
      • enable_congestion
      • enable_connection_diagnosis
      • enable_cpu_isolate
      • enable_cpu_topology
      • enable_crash_error_log
      • enable_cross_shard_txn
      • enable_extra_prometheus_metric
      • enable_flow_control
      • enable_full_link_trace
      • enable_full_username
      • enable_get_rslist_remote
      • enable_global_ps_cache
      • enable_index_route
      • enable_monitor_stat
      • enable_ob_protocol_v2
      • enable_obproxy_rpc_service
      • enable_partition_table_route
      • enable_performance_mode
      • enable_pl_route
      • enable_primary_zone
      • enable_prometheus
      • enable_proxy_scramble
      • enable_qa_mode
      • enable_qos
      • enable_report_session_stats
      • enable_reroute
      • enable_scan_all_request
      • enable_sequence_prefetch
      • enable_sharding
      • enable_single_leader_node_routing
      • enable_standby
      • enable_stat
      • enable_strict_kernel_release
      • enable_strict_stat_time
      • enable_sync_all_stats
      • enable_syslog_file_compress
      • enable_syslog_wf
      • enable_trace
      • enable_trace_stats
      • enable_trans_detail_stats
      • enable_transaction_internal_routing
      • enable_xa_route
      • fetch_proxy_bin_random_time
      • fetch_proxy_bin_timeout
      • flow_consumer_reenable_threshold
      • flow_event_queue_threshold
      • flow_high_water_mark
      • flow_low_water_mark
      • grpc_client_num
      • grpc_thread_num
      • hot_upgrade_exit_timeout
      • hot_upgrade_failure_retries
      • hot_upgrade_rollback_timeout
      • idc_list_refresh_interval
      • ignore_local_config
      • internal_cmd_mem_limited
      • ip_listen_mode
      • is_need_skip_delay_interval_schema_changed
      • ldg_info_refresh_interval
      • listen_port
      • local_bound_ip
      • local_bound_ipv6_ip
      • log_cleanup_interval
      • log_dir_size_threshold
      • log_file_percentage
      • long_async_task_timeout
      • max_log_file_size
      • max_syslog_file_count
      • max_syslog_file_time
      • mem_leak_check_class_name
      • mem_leak_check_mod_name
      • metadb_server_state_refresh_interval
      • min_congested_connect_timeout
      • min_keep_congestion_interval
      • monitor_cost_ms_unit
      • monitor_item_limit
      • monitor_item_max_idle_period
      • monitor_log_level
      • monitor_stat_dump_interval
      • monitor_stat_high_threshold
      • monitor_stat_low_threshold
      • monitor_stat_middle_threshold
      • need_convert_vip_to_tname
      • net_accept_threads
      • net_config_poll_timeout
      • normal_pl_update_threshold
      • obproxy_config_server_url
      • obproxy_sys_password
      • partition_location_expire_relative_time
      • prometheus_cost_ms_unit
      • prometheus_listen_port
      • prometheus_sync_interval
      • protocol_diagnosis_level
      • proxy_cluster
      • proxy_hot_upgrade_check_interval
      • proxy_id
      • proxy_info_check_interval
      • proxy_local_cmd
      • proxy_mem_limited
      • qa_mode_mock_public_cloud_slb_addr
      • qos_stat_clean_interval
      • qos_stat_item_limit
      • refresh_idc_list
      • refresh_json_config
      • refresh_rslist
      • request_buffer_length
      • rootservice_list
      • rpc_client_net_write_timeout
      • rpc_client_net_read_timeout
      • rpc_async_pull_batch_max_size
      • rpc_async_task_thread_num
      • rpc_ctx_expire_time
      • routing_cache_mem_limited
      • rpc_enable_async_analyze
      • rpc_enable_async_pull_batch_tablets
      • rpc_async_pull_batch_max_times
      • rpc_async_pull_batch_wait_interval
      • rpc_enable_direct_expire_route_entry
      • rpc_enable_congestion
      • rpc_enable_lower_case_table_names
      • rpc_enable_global_index
      • rpc_enable_force_srv_black_list
      • rpc_enable_requestsm_info
      • rpc_enable_reroute
      • rpc_enable_parallel_handler
      • rpc_enable_retry_request_info_log
      • rpc_force_use_original_redis_protocol
      • rpc_enable_sub_req_log
      • rpc_force_srv_black_list
      • rpc_listen_port
      • rpc_max_request_batch_size
      • rpc_max_response_batch_size
      • rpc_max_server_table_entry_num
      • rpc_net_timeout_base
      • rpc_partition_calc_max_retries
      • rpc_redis_operation_timeout
      • rpc_request_server_entry_max_retries
      • rpc_request_timeout
      • rpc_request_max_retries
      • rpc_redis_default_database_name
      • rpc_redis_max_monitor_num
      • rpc_period_task_interval
      • rpc_redis_default_user_name
      • rpc_request_retry_waiting_time
      • rpc_server_entry_expire_time
      • rpc_request_timeout_delta
      • rpc_server_net_handler_expire_time
      • rpc_server_net_invalid_time_us
      • rpc_srv_session_pool_inactive_timeout
      • rpc_service_mode
      • rpc_server_net_max_pending_request
      • rpc_sub_request_isolation_mode
      • rpc_support_key_partition_shard_request
      • rpc_sub_request_weight
      • rpc_sub_req_max_retries
      • scan_buffered_rows_warning_threshold
      • sequence_entry_expire_time
      • sequence_fail_retry_count
      • sequence_prefetch_threshold
      • server_detect_fail_threshold
      • server_detect_mode
      • server_detect_refresh_interval
      • server_protocol
      • server_routing_mode
      • server_state_refresh_interval
      • server_tcp_init_cwnd
      • server_tcp_keepcnt
      • server_tcp_keepidle
      • server_tcp_keepintvl
      • server_tcp_user_timeout
      • session_pool_idle_timeout
      • session_pool_reset_interval
      • session_pool_stat_log_interval
      • session_pool_thread_num
      • session_pool_thread_schedule_interval
      • shard_scan_thread_num
      • short_async_task_timeout
      • skip_proxy_sys_private_check
      • skip_proxyro_check
      • slow_proxy_process_time_threshold
      • slow_transaction_time_threshold
      • sock_option_flag_out
      • sock_packet_mark_out
      • sock_packet_tos_out
      • sock_recv_buffer_size_out
      • sock_send_buffer_size_out
      • sql_table_cache_expire_relative_time
      • sql_table_cache_mem_limited
      • sqlaudit_mem_limited
      • stack_size
      • stat_dump_interval
      • stat_table_sync_interval
      • syslog_io_bandwidth_limit
      • syslog_level
      • table_entry_retry_build_limit
      • task_thread_num
      • tenant_location_valid_time
      • tunnel_request_size_threshold
      • username_separator
      • work_thread_num
      • xflush_log_level
    • Multi-level parameters
      • binlog_service_ip
      • compression_algorithm
      • enable_check_cluster_name
      • enable_client_ssl
      • enable_cloud_full_username
      • enable_read_write_split
      • enable_rpc_throttle
      • enable_server_ssl
      • enable_standby_read_write_split
      • enable_transaction_split
      • enable_weak_reroute
      • init_sql
      • mysql_version
      • ob_max_read_stale_time
      • obproxy_force_parallel_query_dop
      • obproxy_read_consistency
      • obproxy_read_only
      • observer_query_timeout_delta
      • observer_sys_password
      • observer_sys_password1
      • proxy_idc_name
      • proxy_primary_zone_name
      • proxy_route_policy
      • proxy_tenant_name
      • query_digest_time_threshold
      • read_stale_retry_interval
      • rootservice_cluster_name
      • route_diagnosis_level
      • rpc_request_throttle_waiting_time
      • rpc_throttle_limit_qps_qa
      • route_target_replica_type
      • rpc_throttle_trigger_percentage
      • slow_query_time_threshold
      • sql_firewall_config
      • ssl_attributes
      • target_db_server
      • weakread_weight_zone
  • Connection management
    • Principles
    • Session status synchronization
    • Configure a globally unique client session ID
    • Client session
    • Server session
    • Network connection
    • Session connection pool
  • Data routing
    • Factors affecting data routing
    • ODP routing
    • Intra-tenant routing
      • Overview
      • IP address-based routing
      • Partitioned table-based routing for strong-consistency reads
      • Global index table-based routing for strong-consistency reads
      • Replicated table-based routing for strong-consistency reads
      • Primary zone-based routing for strong-consistency reads
      • Strategy-based routing
      • Distributed transaction routing
      • Rerouting
      • Forcible routing
      • Weight-based load-balanced routing
      • Equality derivation for partition calculation
    • Automatic routing to the primary/standby tenants
    • Read/Write separation
    • Follower latency threshold
    • Function partition key routing
      • Overview
      • String functions
      • Numeric calculation functions
      • Date calculation functions
      • FAQ
    • Character set-based routing
    • Partitioning key types supported for routing by ODP
  • Logs
    • Overview
    • obproxy_diagnosis.log
    • obproxy_digest.log
    • obproxy_error.log
    • obproxy_slow.log
    • obproxy_stat.log
    • obproxy.log
  • Commands
    • Overview
    • Dedicated ODP commands
      • ALTER
      • KILL
        • KILL GLOBALSESSION
        • KILL PROXYSESSION
      • ping
      • SHOW
        • SHOW
        • SHOW GLOBALSESSION
        • SHOW PROXYPS
    • Compatible MySQL commands
      • BINLOG
      • KILL
      • SHOW PROCESSLIST
      • SHOW RELAYLOG EVENTS
      • SHOW SLAVE HOSTS
  • High availability mechanism
    • Overview
    • High availability of ODP services
    • High availability of OceanBase Database
    • High availability testing
  • OBKV
    • RPC service port
    • Throttling
  • Security and protocols
  • Operation and maintenance
    • Troubleshooting logic
    • Performance analysis
    • Show Trace
    • Routing diagnostics
      • Overview
      • Obtain diagnostic information
      • Diagnostic point troubleshooting
        • Overview
        • SQL_PARSE
        • ROUTE_INFO
        • LOCATION_CACHE_LOOKUP
        • ROUTINE_ENTRY_LOOKUP_DONE
        • FETCH_TABLE_RELATED_DATA
        • TABLE_ENTRY_LOOKUP_DONE
        • EXPR_PARSE
        • CALC_ROWID
        • RESOLVE_TOKEN
        • RESOLVE_EXPR
        • CALC_PARTITION_ID
        • PARTITION_ID_CALC_DONE
        • PARTITION_ENTRY_LOOKUP_DONE
        • ROUTE_POLICY
        • CONGESTION_CONTROL
        • RETRY
        • HANDLE_RESPONSE
      • Examples
    • Memory leak diagnostics
    • Connection diagnostics
    • Prometheus monitoring
    • SQL firewall
  • Release Notes
    • Version number rules
    • Enterprise Edition
      • V4.4
        • OceanBase Database Proxy Enterprise Edition V4.4.1
      • V4.3
        • OceanBase Database Proxy Enterprise Edition V4.3.6
        • OceanBase Database Proxy Enterprise Edition V4.3.5
        • OceanBase Database Enterprise Edition V4.3.4
        • ODP Enterprise Edition V4.3.3
        • ODP Enterprise Edition V4.3.2
        • ODP Enterprise Edition V4.3.1
        • ODP Enterprise Edition V4.3.0
      • V4.2
        • ODP Enterprise Edition V4.2.3
        • ODP Enterprise Edition V4.2.2
        • ODP Enterprise Edition V4.2.1
      • V4.1
        • ODP Enterprise Edition V4.1.0
      • V4.0
        • ODP Enterprise Edition V4.0.0
      • V3.2
        • ODP Enterprise Edition V3.2.11
        • ODP Enterprise Edition V3.2.3.5
    • Community Edition
      • V4.4
        • OceanBase Database Proxy Community Edition V4.4.1
      • V4.3
        • OceanBase Database Proxy Community Edition V4.3.6
        • OceanBase Database Proxy Community Edition V4.3.5
        • OceanBase Database Proxy Community Edition V4.3.4
        • ODP Community Edition V4.3.3
        • ODP Community Edition V4.3.2
        • ODP Community Edition V4.3.1
      • V4.2
        • ODP Community Edition V4.2.3
        • ODP Community Edition V4.2.1
        • ODP Community Edition V4.2.0
      • V4.1
        • ODP Community Edition V4.1.0
      • V4.0
        • ODP Community Edition V4.0.0

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  2. OceanBase Database Proxy
  3. V4.4.1

Overview

Last Updated:2026-09-04 08:25:03

Background information
Routing diagnostics procedure

This topic describes the background of the routing diagnostics feature, how to obtain diagnostic information, and how to locate and solve issues based on diagnostic information.

Background information

OceanBase Database Proxy (ODP) serves as the access and routing layers of OceanBase Database and routing is its core feature. In earlier versions, routing issues are difficult to troubleshoot. Therefore, ODP V4.2.1 provides the routing diagnostics feature. This feature allows you to set diagnostic points during the routing process of an SQL statement in ODP to record key status information. The diagnostic points are then returned in logs or the result set. You can analyze the diagnostic points to learn about the routing process of an SQL statement in ODP.

Routing diagnostics procedure

To use the routing diagnostics feature for troubleshooting, perform the following steps:

  1. Obtain diagnostic information. For more information, see Obtain diagnostic information.

  2. Perform troubleshooting based on the diagnostic information. For more information, see Overview.

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Background information
Routing diagnostics procedure