How To Fix RSAODS255 - Max. Partition '9999' reached for PSA table &1. Repartition the PSA table

SAP Error Message - Details

• Message type: E = Error

• Message class: RSAODS - Messages for the operational data store

• Message number: 255

• Message text: Max. Partition '9999' reached for PSA table &1. Repartition the PSA table

Self-Explanatory Message

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Smart SAP Assistant

• What is the cause and solution for SAP error message RSAODS255 - Max. Partition '9999' reached for PSA table &1. Repartition the PSA table ?

  The SAP error message RSAODS255 indicates that the maximum number of partitions for a Persistent Staging Area (PSA) table has been reached. In SAP BW (Business Warehouse), PSA tables are used to temporarily store data before it is transformed and loaded into the data warehouse. Each PSA table can have a limited number of partitions, and when this limit is reached, you will encounter this error.
  Cause:
  The error occurs when the number of partitions for a specific PSA table exceeds the maximum allowed limit, which is typically set to 9999. This can happen due to:
  
  High Volume of Data Loads: Frequent data loads into the PSA table without proper management can lead to a large number of partitions being created.
  Partitioning Strategy: The way data is partitioned (e.g., by time, such as year/month) can lead to excessive partition creation if not managed properly.
  Data Retention Policies: If old data is not being deleted or archived, it can contribute to reaching the maximum partition limit.
  
  Solution:
  To resolve the RSAODS255 error, you can take the following steps:
  
  
  Repartition the PSA Table:
  
  You can repartition the PSA table to reduce the number of partitions. This can be done by merging existing partitions or changing the partitioning strategy.
  Use transaction code RSA1 to access the Data Warehousing Workbench, navigate to the relevant PSA table, and look for options to manage partitions.
  
  
  
  Delete Old Partitions:
  
  If certain partitions are no longer needed (e.g., old data), you can delete them to free up space. This can be done through the Data Warehousing Workbench or using specific BW transactions.
  Ensure that you have a data retention policy in place to regularly clean up old data.
  
  
  
  Adjust Data Load Frequency:
  
  If possible, adjust the frequency of data loads to prevent excessive partition creation. Consider consolidating data loads if applicable.
  
  
  
  Review Partitioning Strategy:
  
  Evaluate the current partitioning strategy and consider changing it to a more efficient one that reduces the number of partitions created.
  
  
  
  Consult SAP Notes:
  
  Check for any relevant SAP Notes or documentation that may provide additional guidance or solutions specific to your version of SAP BW.
  
  
  
  Related Information:
  
  Transaction Codes: Familiarize yourself with relevant transaction codes such as RSA1 (Data Warehousing Workbench), RSPC (Process Chain), and RSO2 (Manage InfoObjects).
  SAP BW Documentation: Review SAP BW documentation for best practices on managing PSA tables and partitioning strategies.
  Performance Monitoring: Regularly monitor the performance and size of your PSA tables to prevent reaching the partition limit in the future.
  
  By following these steps, you should be able to resolve the RSAODS255 error and manage your PSA tables more effectively.