Recently, I collaborated with a colleague to promote our Exadata system to a new Oracle Enterprise Manager (OEM) server. However, we encountered issues when attempting to promote the Power Distribution Unit (PDU). After consulting My Oracle Support (MOS), we decided to address potential bugs by applying the latest PDU patch before proceeding with the promotionContinue reading “How to patch Exadata PDU”
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What should we do if the Flash Cache is degraded in an Exadata cell
Flash cache plays a critical role in Exadata performance. When issues arise, it’s crucial to understand the symptoms and resolution steps. Typically, each flash cache comprises four flash disks. If one flash disk fails, the cell service automatically removes it while continuing to operate with the remaining three disks. In most cases, immediate intervention isContinue reading “What should we do if the Flash Cache is degraded in an Exadata cell”
ZDLRA ERROR: Filesystem label ESP is found more than once.
Recently, while patching a ZDLRA X7-2 full stack to version 21.1.202405, I encountered an error during the dbnode precheck. This blog post details the issue and its resolution. The Error During the precheck, the following error was encountered: 2024-09-17 15:13:11 +0200 :ERROR : dbnodeupdate.sh precheck failed on one or more nodes SUMMARY OF WARNINGS ANDContinue reading “ZDLRA ERROR: Filesystem label ESP is found more than once.”
Oracle DBA Insights 