How To Fix RSO_CTC221 - Source system &2: delta queue contains large data quantity (&1 blocks)

SAP Error Message - Details

• Message type: E = Error

• Message class: RSO_CTC - Message class for CTC related messages

• Message number: 221

• Message text: Source system &2: delta queue contains large data quantity (&1 blocks)

Self-Explanatory Message

Since SAP believes that this specific error message is 'self-explanatory,' no more information has been given.The majority of messages in the SAP system have a message text, however this is frequently insufficient to comprehend or resolve the problem.

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.

Unfortunately, there isn't any extra information in this error notice.

What else can you do?

First, use our AnswerBot below to get a possible cause and solution (requires a premium subscription).

Also, review the in-depth Common Questions & Answers listed below; you could discover a solution there or be able to connect with others who have faced similar challenges.

You can also try searching the SAP support portal (support.sap.com) but you need a special user ID to access it. It is possible that an SAP support note exists that provides additional details about the mistake or even steps for fixing it.

Smart SAP Assistant

• What is the cause and solution for SAP error message RSO_CTC221 - Source system &2: delta queue contains large data quantity (&1 blocks) ?

  The SAP error message RSO_CTC221 indicates that the delta queue for a source system contains a large quantity of data, which can lead to performance issues or delays in data extraction. This error typically occurs in the context of SAP BW (Business Warehouse) when dealing with data extraction from SAP source systems, particularly when using the delta mechanism.
  Cause:
  
  Large Volume of Delta Data: The delta queue has accumulated a significant amount of data that has not yet been processed. This can happen if the data extraction process is not running frequently enough or if there are issues with the data transfer.
  Long Running Extractors: If the data extraction process is taking too long to complete, it can lead to a backlog in the delta queue.
  System Performance Issues: Performance issues in the source system or the BW system can also contribute to the accumulation of data in the delta queue.
  Configuration Issues: Incorrect configuration of the delta mechanism or the data source can lead to inefficient data extraction.
  
  Solution:
  
  Monitor and Process Delta Queue: Check the delta queue in the source system and process the data. You can use transaction codes like RSA7 to monitor the delta queue and ensure that data is being processed.
  Increase Frequency of Data Extraction: If the delta extraction is not running frequently enough, consider scheduling it to run more often to prevent the queue from filling up.
  Check for Errors: Investigate if there are any errors in the data extraction process that might be causing delays. Look for any failed data loads or issues in the process chain.
  Optimize Extractors: Review the performance of the extractors being used. If they are taking too long, consider optimizing them or using alternative methods for data extraction.
  System Performance Tuning: Ensure that both the source and BW systems are performing optimally. This may involve checking system resources, database performance, and network connectivity.
  Data Cleanup: If there is a significant amount of old data in the delta queue that is no longer needed, consider cleaning it up if appropriate.
  
  Related Information:
  
  Transaction Codes:
  
  RSA7: Monitor the delta queue.
  RSMO: Monitor the process chains.
  RSPC: Process chain management.
  
  
  Documentation: Refer to SAP Help documentation for detailed information on delta queues and data extraction processes.
  SAP Notes: Check for any relevant SAP Notes that may address specific issues related to delta queues and performance.
  
  By addressing the underlying causes and implementing the suggested solutions, you should be able to resolve the RSO_CTC221 error and improve the efficiency of your data extraction processes.