How To Fix CNV_MBT_46028 - Database access failed; some data may not be displayed

SAP Error Message - Details

• Message type: E = Error

• Message class: CNV_MBT_46 - PCL message class

• Message number: 028

• Message text: Database access failed; some data may not be displayed

Self-Explanatory Message

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To make things easier, more detailed information is frequently added to describe the issue, how to fix it, and the necessary steps or configuration modifications.

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Smart SAP Assistant

• What is the cause and solution for SAP error message CNV_MBT_46028 - Database access failed; some data may not be displayed ?

  The SAP error message CNV_MBT_46028 indicates that there was a failure in accessing the database, which may result in some data not being displayed. This error is often encountered during data migration or conversion processes, particularly when using SAP's Migration Cockpit or similar tools.
  Causes:
  
  Database Connectivity Issues: There may be problems with the connection to the database, such as network issues, database server downtime, or incorrect connection parameters.
  Authorization Issues: The user executing the migration may not have the necessary permissions to access certain tables or data.
  Data Consistency Issues: There may be inconsistencies or corruption in the data that prevent it from being read correctly.
  Configuration Errors: Incorrect configuration settings in the migration tool or in the database connection settings can lead to access failures.
  Resource Limitations: Insufficient resources (like memory or CPU) on the database server can lead to timeouts or failures in data retrieval.
  
  Solutions:
  
  
  Check Database Connectivity:
  
  Verify that the database server is up and running.
  Check network connections and ensure that there are no firewalls blocking access.
  Test the database connection using a database client tool.
  
  
  
  Review User Authorizations:
  
  Ensure that the user has the necessary authorizations to access the required tables and data.
  Check roles and permissions assigned to the user in the SAP system.
  
  
  
  Examine Data Integrity:
  
  Run consistency checks on the database to identify any corrupt or inconsistent data.
  If necessary, restore data from backups or correct inconsistencies.
  
  
  
  Check Configuration Settings:
  
  Review the configuration settings in the migration tool to ensure they are correct.
  Verify that the connection parameters (like host, port, user, password) are accurate.
  
  
  
  Monitor Resource Usage:
  
  Check the resource usage on the database server to ensure it is not overloaded.
  If resource limitations are identified, consider optimizing the database or upgrading hardware.
  
  
  
  Review Logs:
  
  Check the SAP application logs and database logs for more detailed error messages that can provide insights into the issue.
  
  
  
  Related Information:
  
  SAP Notes: Search for relevant SAP Notes in the SAP Support Portal that may address this specific error or provide additional troubleshooting steps.
  Documentation: Review the official SAP documentation for the migration tool being used, as it may contain specific guidelines for resolving database access issues.
  Community Forums: Engage with SAP community forums or user groups where similar issues may have been discussed, and solutions shared.
  
  If the issue persists after trying the above solutions, it may be necessary to contact SAP support for further assistance.