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ACFS Replication Based On Tagging
ACFS tagging plays a crucial role in optimizing ACFS replication. Instead of duplicating an entire mount point tagging allows administrators to selectively replicate only specific files or directories. During the initial replication setup on the primary system, tags can be assigned to define the scope of data to be replicated. These tags can also be…
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Oracle GoldenGate Microservices Failing to Start via XAG
A few days back, I set up Oracle GoldenGate Microservices on: Version: 21.12.0.0.0 Source & Destination: Configured for one of the critical databases This database is vital for real-time data synchronization, and Oracle GoldenGate is the preferred solution for such requirements. It’s a very popular product nowadays for data replication and synchronization across environments. Personally,…
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OPATCHAUTO-72043 -Failed to apply the Patch
Some time ago, I attempted to apply a patch to upgrade my 2-node Oracle RAC Grid Infrastructure from version 19.24 to 19.27. However, I encountered the following error: SEVERE [1] com.oracle.glcm.patch.auto.OPatchAuto – OPatchAuto failed.> com.oracle.glcm.patch.auto.OPatchAutoException: OPATCHAUTO-72043: Patch collection failed.> OPATCHAUTO-72043: Failed to create bundle patch object.> OPATCHAUTO-72043: Please verify the patch supplied.> at com.oracle.glcm.patch.auto.db.integration.model.plan.PatchingProcessInitializer.initializePatchPackageBag(PatchingProcessInitializer.java:97)> at…
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How ToResolved a Duplicate Diskgroup Issue in Oracle RAC 19c (19.27)
Recently, I encountered a situation in a 2-node Windows RAC 19c environment running the latest 19.27 Grid Infrastructure version.I had added a disk back using the force option. However, I mistakenly did not specify the disk name, which resulted in the creation of a duplicate disk associated with a new disk group (Group Number 0).…
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ASM Disk Migration Error: Sector Size Mismatch Between RHEL 7 and RHEL 8 ([512] vs [4096])
Environment Details: Source OS: RHEL 7 Target OS: RHEL 8 (also applies to RHEL 9 scenario below) Grid Infrastructure Version: 19.26 (Oracle Restart) ASMLib Version on RHEL 7: 2.x ASMLib Version on RHEL 8: 3.1 Storage Type: NetApp LUNs Disk Sector Size (RHEL 7): 512 bytes Disk Sector Size (RHEL 8/9): 4096 bytes (default) We…
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Introduce GRUB As The Most Commonly used Bootloader In Linux.
GRUB is a bootloader used in most Linux distributions. A bootloader is a small program responsible for loading the operating system into memory and starting it. GRUB supports multiple operating systems, making it an excellent tool for dual-boot setups. There are two main versions of GRUB: GRUB Legacy (older, deprecated) GRUB 2 (modern version used…
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Storage AFD:UNMAP Protocol With ASM Disk
In Oracle storage environments using ASM (Automatic Storage Management) with AFD (ASM Filter Driver), the UNMAP protocol plays a key role in space reclamation—especially when you’re using thin-provisioned storage such as SSDs or SAN systems that support SCSI UNMAP or NVMe deallocation. What is the UNMAP Protocol? The UNMAP protocol is a SCSI command (or…
