3266241 - SUM error: "Could not detect system kernel" in step Detect-Source-Components during JAVA upgrade

While upgrading a Netweaver AS JAVA system, Software Update Manager (SUM) encounters errors in phase Detect-Source-Components.

• DETECT-SOURCE-COMPONENTS_NN.LOG will have entries as:
  
  Oct 31, 2022 5:45:33 AM [Info  ]: Kernel SAP KERNEL UNICODE LINUX_X86_64 with release 7.53, SP level 900, patch level 0 found in /usr/sap/<SID>/SYS/exe/uc/linuxx86_64.
  Oct 31, 2022 5:45:33 AM [Error ]: The following problem has occurred during step execution: com.sap.sdt.jspm.gui.SystemDetectionException: Could not detect system components.
  Could not detect version information of the current system kernel.
  Could not detect system kernel under the /usr/sap/<SID>/SYS directory.
  Could not detect central instance kernel in directory /usr/sap/<SID>/SYS/exe/uc/linuxx86_64.
  Kernel of instance <Instance No> on the local host is for database HDB which is different from the detected database SYB.
       Either a wrong kernel is installed in /usr/sap/<SID>/SYS/exe/uc/linuxx86_64 or there is a problem with database detection.

• Software Update Manager (SUM)
• SAP Netweaver AS JAVA

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