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HCL OneDB 2.0.0.0
  • What's new in HCL OneDB™ 2.0.0.0
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  1. Home
  2. AdministeringIn addition to administering the database server, you can tune performance, replicate data, and archive data.
  3. System administrationThese topics contain concepts, procedures, and reference information for database and database server administrators to use for managing and tuning HCL OneDB™ database servers.
  4. Administrator's GuideThe HCL OneDB™ Administrator's Guide provides the information required to administer HCL OneDB™.
  5. Logging and log administration
  6. Logical log
  • AdministeringIn addition to administering the database server, you can tune performance, replicate data, and archive data.
    • System administrationThese topics contain concepts, procedures, and reference information for database and database server administrators to use for managing and tuning HCL OneDB™ database servers.
      • Administrator's GuideThe HCL OneDB™ Administrator's Guide provides the information required to administer HCL OneDB™.
        • The database server
        • Disk, memory, and process management
        • Logging and log administration
          • Logging
          • Manage the database-logging modeYou can monitor and modify the database-logging mode.
          • Logical log
            • What is the logical log?
            • Location of logical-log filesWhen the database server initializes disk space, it places the logical-log files and the physical log in the root dbspace.
            • Identification of logical-log files
            • Status flags of logical-log files
            • Size of the logical-log file
            • Dynamic log allocation
            • Freeing of logical-log files
            • Log blobspaces and simple large objects
            • Log sbspaces and smart large objects
            • Logging process
          • Manage logical-log files
          • Physical logging, checkpoints, and fast recovery
          • Manage the physical log
        • Fault tolerance
        • High availability and scalabilityA successful production environment requires database systems that are always available, with minimal if any planned outages, and that can be scaled quickly and easily as business requirements change.
        • Distributed data
        • Overview of automatic monitoring and corrective actionsYou can use the SQL administration API, the Scheduler, and drill-down queries to manage automatic maintenance, monitoring, and administrative tasks.
        • HCL OneDB server licensing
      • Administrator's ReferenceThe HCL OneDB™ Administrator's Reference includes comprehensive descriptions of HCL OneDB™ configuration parameters, the system-monitoring interface (SMI) tables in the sysmaster database, the syntax of database server utilities such as onmode and onstat, logical-log records, disk structures, event alarms, and unnumbered error messages.
      • DB-Access User's GuideThis publication describes how to use the DB-Access utility to access, modify, and retrieve information from HCL® OneDB® database servers.
      • Performance GuideThe HCL OneDB™ Performance Guide describes how to configure and operate your HCL OneDB™ database server to improve overall system throughput and to improve the performance of SQL queries.
      • OneDB ExploreOneDB Explore is a modern web console for visualizing, monitoring, and managing your OneDB server instances. It is purpose built for ease-of-use, scaling out, and optimizing DevOps needs. It provides critical performance management capabilities, monitoring how key performance metrics are changing over time and tracking how efficiently OneDB is running your workload even when you’ve stepped away from your screen. Its monitoring system feeds directly into a customizable alerting system so you can be immediately alerted via email, Twilio, or PagerDuty whenever an issue occurs on one of your OneDB database server instances. OneDB Explore is designed to be scalable to efficiently manage and monitor as many OneDB database server instances as you need. Moreover, it's a tool that can be shared by the DBAs, the app developers, the ops engineers, and management and accessed from any desktop, laptop, or mobile device. OneDB Explore is the centralized hub for graphical monitoring, alerting, and administration of your OneDB database servers.
    • Backup and Restore GuideThe HCL OneDB™ Backup and Restore Guide describes how to use the HCL® OneDB® ON-Bar utility to back up and restore database server data. This will enable you to recover your databases after data is lost or becomes corrupted due to hardware or software failure or accident.
    • Enterprise ReplicationThe HCL OneDB™ Enterprise Replication Guide describes the concepts of data replication using HCL® OneDB® Enterprise Replication, including how to design your replication system, as well as administer and manage data replication throughout your enterprise.

Logical log

The information in Logging, and these topics explains how the database server uses the logical log. For information about how to perform logical-log tasks, see Manage logical-log files, and Manage the database-logging mode.

  • What is the logical log?
  • Location of logical-log files
    When the database server initializes disk space, it places the logical-log files and the physical log in the root dbspace.
  • Identification of logical-log files
  • Status flags of logical-log files
  • Size of the logical-log file
  • Dynamic log allocation
  • Freeing of logical-log files
  • Log blobspaces and simple large objects
  • Log sbspaces and smart large objects
  • Logging process
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