Databases@Powered by Passion

  • Unable to parse exa_map file

    Unable to Parse the Content of exa_map Error on ExaCC Grid RU Precheck

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    by

    Osman DİNÇ
    , ,

    The document details troubleshooting steps taken to resolve a grid release update(19.28) error on an Exadata Cloud system. The initial issue involved SSH connectivity, followed by problems with the Database Cloud Service (DBCS) agent. Key actions included checking SSH configurations, inspecting platform information, and managing package updates. Ultimately, updating the dbaascli tools resolved the precheck failures, simplifying the patching process.

  • Clone Oracle Database Home

    Cloning Oracle RAC Database Home to Single Instance and vice versa

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    by

    Osman DİNÇ
    , ,

    This blog post details the steps for cloning an Oracle Database Home from an existing Oracle Home to another server, applicable to both RAC and Single Instance environments. Cloning is preferred over reinstalling, particularly for legacy systems with unique patches when original installation setups are unavailable. The process involves creating a tar file of the source, setting up the target, and executing cloning commands to ensure successful cloning and validation of the new Oracle Home.

  • Backing up to a fake tape (SBT)

    Backing up to a fake tape (SBT) in Oracle RMAN and using sbttest tool

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    by

    Osman DİNÇ
    , ,

    This content discusses simulating tape backups using RMAN and a dummy SBT library (oracle.disksbt) to troubleshoot backup failures. The article details how to perform fake tape backups with Oracle’s disk-based SBT library, effectively isolating issues within the Oracle layer or the vendor’s Media Management Library (MML). It also introduces the sbttest tool for assessing media manager installation and its usage with Oracle Test Disk API.

  • Tnsping,ociping,adbpingi,connping

    Ping Checks Life, tnsping Checks Purpose #JoelKallmanDay

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    by

    Osman DİNÇ
    ,

    The content explains various Oracle connectivity testing utilities: ping, tnsping, ociping, connping, and adbping. It honors Joel Kallman, a key figure in database development. The document details how each connectivity utility functions, emphasizing their roles in troubleshooting connection issues and measuring latency, providing practical examples and outcomes for effective database management and performance evaluation.

  • hard validation during asm relocation

    New Exachk Criterion: Hardware Assisted Resilient Data (HARD) Validation During ASM Relocation

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    by

    Osman DİNÇ
    , ,

    The recent analysis of an Exachk report revealed a new check for Hardware Assisted Resilient Data (HARD) capability during the ASM Relocation (rebalance, resync, or resilver) process. HARD checks validate data integrity in Exadata storage servers, preventing corruption. Setting the content.check attribute of asm diskgroup to TRUE will enable Hardware Assisted Resilient Data (HARD) Validation During ASM Relocation. This change aligns with Exadata best practices for improved data protection.

  • Oracle Autonomous DB deploy

    Deploy Oracle Autonomous Database on your Computer

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    by

    Osman DİNÇ
    , ,

    Oracle Autonomous Database can be deployed locally on a laptop using container platforms such as Docker or Podman, offering features similar to those available in the Oracle Cloud Infrastructure (OCI) Autonomous Database (ADB). Images are available for both ADW (Autonomous Data Warehouse) and ATP (Autonomous Transaction Processing) workloads. In this post, the deployment is demonstrated on the ARM-based Apple Macs, which requires configuring Docker along with Rosetta. Users can access the database via REST APIs and manage it easily through the Database Actions web interface, powered by Oracle REST Data Services (ORDS).