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Oracle RAC Node Startup Issue After Oracle Database 19c Software Installation - Analysis and Solution

After successfully installing the Oracle Database 19c software on a three-node Oracle RAC cluster, one of the nodes encountered problems with starting up correctly. The initial analysis of the cluster status using the crsctl check crs command showed that the basic cluster services were online, but there were communication issues with the Cluster

Author: Aleksander Legkoszkur | Category: oracle_errors | Added: April 28, 2025
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[FATAL] [INS-35423] The installer has detected that Oracle Clusterware is not running on local node.

When installing Oracle Database 19c on a RAC environment, a critical error may occur: [FATAL] [INS-35423] The installer has detected that Oracle Clusterware is not running on local node. WARNING: oracle.install.library.crs. CRSInfo.isCRSRunning OnLocalNode(CRSInfo.java:1185)

Author: Aleksander Legkoszkur | Category: oracle_errors | Added: April 27, 2025
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Polymorphic AI Systems Based on Machine Learning Models

In this article, I want to present a dry concept of polymorphic AI systems based on machine learning models.The idea is to build systems made up of many simple, interacting units instead of relying on one large, heavy neural network.

Author: Aleksander Legkoszkur | Category: artificial intelligence | Added: April 27, 2025
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Troubleshooting Oracle Cluster Node Startup Issues After Reboot

CRS-1714: Unable to discover any voting files, retrying discovery in 15 secondsCRS-5818: Aborted command 'start' for resource 'ora.cssd'CRS-2757: Command 'Start' timed out waiting for response from 'ora.cssd'CRS-1656: The CSS daemon is terminating due to a fatal errorCRS-8503: Oracle Clusterware process OCSSD experienced fatal signal or exc

Author: Aleksander Legkoszkur | Category: oracle_errors | Added: April 26, 2025
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