GBase 8a Operations in Practice: Load Monitoring, Audit Logs, and Memory Tuning

This guide covers three core areas of daily GBase 8a operations: tracking data loads and collecting error details, configuring audit logs and analysing slow queries, and hierarchically tuning memory parameters. It also provides a standard daily and weekly inspection checklist for your gbase database . 1. Data Load Monitoring 1.1 Load Methods GBase 8a supports two main load methods: gload for large‑scale offline imports (recommended), and LOAD DATA INFILE for single‑file loads with MySQL‑like syntax. 1.2 Checking Load Progress Monitor running and historical loads through system tables: -- Currently executing load tasks SELECT task_id , table_name , status , start_time , loaded_rows , error_rows , TIMESTAMPDIFF ( SECOND , start_time , NOW ()) AS elapsed_sec FROM gclusterdb . load_task WHERE status IN ( 'RUNNING' , 'PENDING' ) ORDER BY start_time DESC ; -- Last 50 load history records SELECT task_id , table_name , status , start_time , end_time , loaded_rows , error_rows , TIMESTAMPDIFF ( SECOND , start_time , end_time ) AS duration_sec FROM gclusterdb . load_task ORDER BY start_time DESC LIMIT 50 ; 1.3 Retrieving the Last Load Task ID SELECT @@ gbase_loader_last_task_id ; Then query error details with that ID: SELECT * FROM gclusterdb . load_error_log WHERE task_id = 'your_task_id' LIMIT 100 ; 1.4 Error Data Collection Enable error collection in the gcluster configuration file ( gbase.cnf ) for production: gbase_loader_logs_collect = ON 1.5 Load Performance Parameters Parameter Scope Description Recommended gcluster_loader_max_data_processors gcluster Max concurrent load processing threads CPU cores / 2 gcluster_loader_min_chunk_size gcluster Chunk size sent to gnode (bytes) 64 MB gbase_loader_parallel_degree gnode Parallel write threads on gnode 4 – 8 gbase_loader_buffer_count gnode Number of load buffers 4 2. Audit Log Configuration and Analysis 2.1 Enabling Audit Logs Configure in both gcluster and gnode gbase.cnf files: audit_log = ON log_output = FILE # or TABLE