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  • expdp issue ora-48128

    ORA-48128: opening of a symbolic link is disallowed during Data Pump Export 

    26 Jul 2026 14:48

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    by

    Osman DİNÇ
    Backup, Databases, Oracle

    This post explains how a Data Pump export in an Oracle RAC environment failed with misleading errors, including ORA-48128, related to symbolic links and file access. The actual cause was an NFS-mounted Data Pump directory that was accessible from only one RAC node. Adding CLUSTER=N resolved the issue by keeping all Data Pump workers on the local instance. Alternatively, mounting the NFS filesystem on all RAC nodes also resolves the problem.


  • Oracle Update Advisor

    Escalating Update Decisions to Oracle Update Advisor

    21 May 2026 22:55

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    by

    Osman DİNÇ
    Databases, Update

    The content discusses the role of Oracle Update Advisor in assisting DBAs with patch management decisions. While automation tools efficiently execute patches, they lack the capability to evaluate whether updates align with an organization’s needs. Oracle Update Advisor addresses this gap by providing status indicators and allowing customization of maintenance policies to better reflect operational realities.


  • Configure rhpserver for oracle fpp local mode

    How to Configure RHP Server for Oracle FPP Local Mode in 19c Oracle RAC

    20 May 2026 22:12

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    by

    Osman DİNÇ
    Databases, Oracle, Update

    The Oracle Fleet Patching and Provisioning (FPP) local mode, in 19c environments, mandates a Grid Infrastructure Management Repository (GIMR) for local automation. Users must configure GIMR when components are missing or when it was not initially installed. The MDBUtil tool assists with setting up GIMR, ensuring the environment is adequate for running FPP local mode. Additionally, commands for managing Cluster Health Monitor resources are outlined in this post.


  • PDB Upgrade Stuck in RESTRICTED Mode

    Fixing “Wallet Key Needed” Errors During Oracle PDB Migration Despite No Encrypted Tablespaces

    18 May 2026 22:13

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    by

    Osman DİNÇ
    Databases, Oracle, Update

    This post details a specific challenge encountered during a non-CDB to PDB migration when the database remained in RESTRICTED mode due to encryption-related errors. The issue arose from a missing TDE key, despite the absence of encrypted tablespaces. The process of locating the required master key is described with merging it into the CDB wallet, and ultimately exporting and importing the key to resolve the violation.


  • ODA Disk Failed

    Oracle Database Appliance Disk State FAILED / DiskRemoved but ASM Healthy: Troubleshooting Guide

    17 May 2026 01:03

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    by

    Osman DİNÇ
    Databases, Exadata, Oracle

    While working with an Oracle Database Appliance, an inconsistency arose between the management layer and the storage stack, leading to a disk reported as “FAILED” by odaadmcli. Further investigation revealed the disk was fully operational, with ASM actively using it. Troubleshooting involved validating multipath status, ASM state, and using the odaadmcli stordiag command. A file synchronization issue was discovered, which was resolved by restarting the OAK daemon, returning the disk to an “ONLINE” state.


  • Oracle-Form6i-19c-database

    Running Oracle Forms 6i with Oracle 19c: Is It Possible?

    26 Apr 2026 21:15

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    by

    Osman DİNÇ
    Databases, Oracle, Update

    Oracle Forms 6i applications are not compatible with Oracle Database 19c because Forms 6i is obsolete and no longer supported. Today, organizations have three options: move to Oracle Forms 14c, switch to Oracle APEX or completely rewrite the application using current web technologies. In this post, however, I will provide a a short-term workaround that requires minimal effort and almost no changes to the existing application code by using a Forms 10g web server. It works as a bridge solution, but it is not where you want to stay long term.


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