How To Fix DMCLG818 - For table type '&1' a collective access plan is not supported

SAP Error Message - Details

• Message type: E = Error

• Message class: DMCLG - DMC Tool Development

• Message number: 818

• Message text: For table type '&1' a collective access plan is not supported

Self-Explanatory Message

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Smart SAP Assistant

• What is the cause and solution for SAP error message DMCLG818 - For table type '&1' a collective access plan is not supported ?

  The SAP error message DMCLG818 indicates that a collective access plan is not supported for a specific table type. This error typically arises in the context of database operations, particularly when dealing with database tables that have certain characteristics or constraints.
  Cause:
  The error occurs when the system attempts to execute a collective access plan (which is a way to optimize access to multiple database tables in a single operation) on a table type that does not support this feature. This can happen for several reasons, including:
  
  Table Type Restrictions: The table in question may be a temporary table, a table with specific locking mechanisms, or a table that is not designed to be accessed collectively.
  Database Configuration: The underlying database may have limitations or configurations that prevent collective access plans from being utilized for certain table types.
  Query Structure: The SQL query or the ABAP code may be structured in a way that is incompatible with collective access plans.
  
  Solution:
  To resolve the DMCLG818 error, consider the following steps:
  
  
  Review Table Types: Check the type of the table you are trying to access. If it is a temporary table or a table that does not support collective access, you may need to adjust your approach.
  
  
  Modify the Query: If possible, restructure your SQL query or ABAP code to avoid using collective access plans. This may involve breaking down the query into smaller parts or accessing the tables individually.
  
  
  Database Configuration: Consult with your database administrator to ensure that the database is configured correctly and that there are no restrictions on collective access for the tables in question.
  
  
  SAP Notes and Documentation: Check for any relevant SAP Notes or documentation that may provide additional insights or updates regarding this error. SAP frequently releases updates and patches that may address specific issues.
  
  
  Performance Considerations: If you are forced to access tables individually, consider the performance implications and optimize your queries accordingly.
  
  
  Related Information:
  
  SAP Documentation: Refer to the official SAP documentation for your specific version to understand the limitations and capabilities of collective access plans.
  SAP Community: Engage with the SAP Community forums to see if other users have encountered similar issues and what solutions they have found.
  Support Tickets: If the issue persists and is critical to your operations, consider opening a support ticket with SAP for further assistance.
  
  By following these steps, you should be able to diagnose and resolve the DMCLG818 error effectively.