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    • Double-clicking MCDC_START.jar does not open the tool or give any visible action
      https://kb.netapp.com/on-prem/ontap/mc/MC-KBs/Double-clicking_MCDC_START.jar_does_not_open_the_tool_or_give_any_visible_action
      Applies to MetroCluster MC_DC Windows Double-clicking MCDC_START.jar does not open the tool or give any visible action. After attempting to open the file, a new Launcher_n file will be created in the ...Applies to MetroCluster MC_DC Windows Double-clicking MCDC_START.jar does not open the tool or give any visible action. After attempting to open the file, a new Launcher_n file will be created in the tools directory. Open this text file for information on the failure. MCDC_MONITOR.jex: Starting Monitor for: 2 / MCDC Gui MCDC_MONITOR.jex: java -server -Xms1024M -Xmx2048M -Xss256K -XX:+UseConcMarkSweepGC -jar MCDC_Main.jex -gui MCDC_MONITOR.jex: Crash detected. Exit code: 4 ... restarting in 30s
    • The collect.dcl log reports "could not get session, user/password might be incorrect"
      https://kb.netapp.com/on-prem/ontap/mc/MC-KBs/The_collect_dcl_log_reports_could_not_get_session_user_password_might_be_incorrect
      Applies to MetroCluster MC_DC Issue collect.dcl log from MC_DC data collection shows the following error for a device: could not get session, user/password might be incorrect Cause Incorrect password ...Applies to MetroCluster MC_DC Issue collect.dcl log from MC_DC data collection shows the following error for a device: could not get session, user/password might be incorrect Cause Incorrect password Solution Check and correct the credentials for the device: To check configured devices: Right-click on the MetroCluster Monitor and select Change Configuration (persistent). Check and change the device credentials as needed.
    • The collect.dcl log reports "collection attempt timed out"
      https://kb.netapp.com/on-prem/ontap/mc/MC-KBs/The_collect_dcl_log_reports_collection_attempt_timed_out
      Applies to MetroCluster MC_DC Issue The collect.dcl log reports "collection attempt timed out" Cause Network device is not reachable. Solution Check that the device can be reached directly from the cl...Applies to MetroCluster MC_DC Issue The collect.dcl log reports "collection attempt timed out" Cause Network device is not reachable. Solution Check that the device can be reached directly from the client hosting MCDC. If ping works, try telnet or ssh depending on the device type. Check that the address of the device is correct in MCDC (if a switch or bridge) If a controller reports this error, ensure that the controller name is resolvable by the host.
    • After double-clicking MCDC_START.jar, there is a prompt asking which application should be used to open the file
      https://kb.netapp.com/on-prem/ontap/mc/MC-KBs/After_double_clicking_MCDC_START_jar_there_is_a_prompt_asking_which_application_should_be_used_to_open_the_file
      Applies to MetroCluster MC_DC Windows Issue After double-clicking MCDC_START.jar, there is a prompt asking which application should be used to open the file. Cause Java is either not installed or .jar...Applies to MetroCluster MC_DC Windows Issue After double-clicking MCDC_START.jar, there is a prompt asking which application should be used to open the file. Cause Java is either not installed or .jar files are not properly associated with Java. Install Java or check the file association is correct. Solution Re-run the JDK installer and, select repair and install the feature JAR Files Association under OpenJDK Runtime.
    • MC_DC is not collecting data as expected
      https://kb.netapp.com/on-prem/ontap/mc/MC-KBs/MC_DC_is_not_collecting_data_as_expected
      MC_DC This article explains the common issues if MC_DC is not correctly collecting data. After double-clicking MCDC_START.jar, there is a prompt asking which application should be used to open the fil...MC_DC This article explains the common issues if MC_DC is not correctly collecting data. After double-clicking MCDC_START.jar, there is a prompt asking which application should be used to open the file. Double-clicking MCDC_START.jar does not open the tool or give any visible action The collect.dcl log reports "collection attempt timed out" The collect.dcl log reports "could not get session, user/password might be incorrect" The collect.dcl log reports "ccode: 8 EXEC - command not found"
    • How to use MC_DC to collect data from MetroClusters (Windows)
      https://kb.netapp.com/on-prem/ontap/mc/MC-KBs/How_to_use_MC_DC_to_collect_data_from_Fabric_MetroClusters_Windows
      Applies to MetroCluster IP MetroCluster_DataCollector (MC_DC) Windows MC_DC is a tool to gather information primarily from MetroClusters, and also from FlexArray and to monitor such environments and t...Applies to MetroCluster IP MetroCluster_DataCollector (MC_DC) Windows MC_DC is a tool to gather information primarily from MetroClusters, and also from FlexArray and to monitor such environments and to build a history of data which is most helpful for diagnostic and troubleshooting efforts. Supported back-end switches monitored in MetroCluster FC confirgurations: Cisco and Brocade Supported back-end switches monitored in MetroCluster IP: Cisco, Broadcom (BES), Nvidia (SN2100) switches