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    Simple Log Service:Log fields

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    Simple Log Service:Log fields

    Last Updated:Jun 04, 2026

    Describes the fields in audit logs, slow logs, and error logs collected from ApsaraDB RDS instances.

    Audit logs

    Field Description
    __topic__ The log topic. The value is always rds_audit_log.
    instance_id The ID of the ApsaraDB RDS instance.
    check_rows The number of rows scanned.
    db The name of the database.
    fail Indicates whether the SQL statement executed successfully.
    • For MySQL and SQL Server instances, 0 indicates success. Any other value indicates a failure.
    • For PostgreSQL instances, 0000 indicates success. Any other value indicates a failure.
    client_ip The IP address of the client accessing the ApsaraDB RDS instance.
    latency The time taken to return the SQL statement result. Unit: microseconds.
    origin_time The time at which the SQL statement was executed.
    return_rows The number of rows returned.
    sql The SQL statement that was executed.
    thread_id The ID of the thread.
    user The name of the user who executed the SQL statement.
    update_rows The number of rows updated.

    Slow logs

    Field Description
    __topic__ The log topic.
    • For ApsaraDB RDS for MySQL slow logs, the value is rds_slow_log.
    • For ApsaraDB RDS for PostgreSQL slow logs, the value is rds_slow_log_pg.
    db_name The name of the database.
    db_type The database engine type. Valid values: MySQL and PostgreSQL.
    db_version The database engine version of the ApsaraDB RDS instance.
    instance_id The ID of the cluster.
    lock_time The duration of the lock wait. Unit: seconds.
    owner_id The ID of the Alibaba Cloud account.
    query_sql The SQL statement of the slow query.
    query_time The time taken to execute the SQL statement. Unit: seconds.
    region The region where the ApsaraDB RDS instance resides.
    rows_examined The number of rows scanned.
    rows_sent The number of rows returned.
    start_time The time at which the SQL statement was executed.
    user_host The host and user information of the client.

    Error logs

    Field Description
    __topic__ The log topic.
    • For ApsaraDB RDS for MySQL error logs, the value is rds_error_log.
    • For ApsaraDB RDS for PostgreSQL error logs, the value is rds_error_log_pg.
    instance_id The ID of the cluster.
    collect_time The time at which the log was collected.
    db_type The database engine type. Valid values: MySQL and PostgreSQL.
    db_version The database engine version of the ApsaraDB RDS instance.
    content The content of the log entry.
    eventType The type of the event.