Dameng Database Primary-Standby Architectures and Configuration
Core Mechanisms of Dameng Data WatchDameng (DM) database high availability clusters are established through the Data Watch framework. The foundational mechanism involves transmitting Redo logs from the primary instance to standby instances, which then apply these logs to maintain data synchronization. By manipulating specific parameters and int ...
Posted on Wed, 09 Sep 2026 16:19:51 +0000 by daphreeek
Resolving Data Guard Standby Gaps Using RMAN FROM SERVICE in Oracle 19c
Network-Based Restore and Recovery OverviewIn Oracle Data Guard environments, archivelog gaps can occur when primary archives are deleted before the standby database receives them, halting the redo apply process. Traditionally, resolving this required taking an incremental backup on the primary based on the standby's current SCN, transferring i ...
Posted on Sat, 25 Jul 2026 16:44:30 +0000 by cleanice
Configuring Oracle Data Guard for 11g RAC with ASM Storage
Environment Overview
The following infrastructure details apply to the Primary and Standby sites. Note that the Standby instance requires only the database software installation; the database itself is created logically during recovery.
# /etc/hosts Configuration
# Public IPs
192.168.10.10 prod-prm-1
192.168.10.11 prod-prm-2
192.168.10.12 d ...
Posted on Mon, 11 May 2026 00:15:54 +0000 by JohnnyBlaze