How To Fix RSDD_ZA081 - Reduce number of open handles

SAP Error Message - Details

• Message type: E = Error

• Message class: RSDD_ZA - Messages from TREX Aggregate Area

• Message number: 081

• Message text: Reduce number of open handles

What causes this issue?

Handles are used for open TCP/IP connections or open files. Too many
TCP/IP connections or files have been opened at once, which means there
are too many handles.

How to fix this error?

Attempt to reduce the number of loaded indexes or to distribute the
indexes to multiple blades.
Perform at least one of the following actions:
Check the limitations in the kernel of the BW Accelerator.
Reduce the number of loaded indexes.
Check the settings and sizes (memory and other) of your hardware.
This action cannot be started from the BW system. You have to perform
this action directly on the BW accelerator.

System Response

The system issues an error message and will not allow you to continue with this transaction until the error is resolved.

Procedure for System Administrators

Error message extract from SAP system. Copyright SAP SE.

Smart SAP Assistant

• What is the cause and solution for SAP error message RSDD_ZA081 - Reduce number of open handles ?

  The SAP error message RSDD_ZA081, which states "Reduce number of open handles," typically occurs in the context of SAP BW (Business Warehouse) or SAP HANA environments. This error indicates that the system has reached the limit of open handles, which are used to manage resources such as database connections, memory, or other system resources.
  Cause:
  
  
  Resource Limitations: The system has a predefined limit on the number of open handles, and this limit has been exceeded. This can happen due to:
  
  Too many concurrent queries or processes running.
  Inefficient resource management in the application or queries.
  Memory leaks or unclosed connections in custom code or third-party applications.
  
  
  
  Configuration Issues: The configuration settings for the database or application server may not be optimized for the workload, leading to excessive handle usage.
  
  
  Long-Running Queries: Queries that take a long time to execute can hold onto handles longer than necessary, contributing to the exhaustion of available handles.
  
  
  Solution:
  
  
  Reduce Concurrent Queries: Limit the number of concurrent queries or processes that are executed at the same time. This can be done by:
  
  Scheduling heavy reports or data loads during off-peak hours.
  Implementing query optimization techniques to reduce execution time.
  
  
  
  Optimize Queries: Review and optimize the queries being executed to ensure they are efficient and do not consume excessive resources. This may involve:
  
  Analyzing execution plans.
  Adding appropriate indexes.
  Reducing the amount of data being processed.
  
  
  
  Close Unused Connections: Ensure that all database connections are properly closed after use. This is particularly important in custom ABAP programs or third-party applications.
  
  
  Increase Handle Limits: If the workload justifies it, consider increasing the limit for open handles in the system configuration. This can be done by:
  
  Adjusting parameters in the database or application server settings.
  Consulting with your SAP Basis team to determine the appropriate settings.
  
  
  
  Monitor System Performance: Use monitoring tools to keep track of system performance and resource usage. This can help identify bottlenecks and areas for improvement.
  
  
  Check for Memory Leaks: If you suspect that there are memory leaks in custom code, conduct a thorough review and testing to identify and fix these issues.
  
  
  Related Information:
  
  SAP Notes: Check SAP Notes related to RSDD_ZA081 for any specific patches or updates that may address this issue.
  SAP Community: Engage with the SAP Community forums to see if other users have encountered similar issues and what solutions they have implemented.
  Documentation: Review SAP documentation for best practices on performance tuning and resource management in SAP BW or HANA environments.
  
  By following these steps, you should be able to address the RSDD_ZA081 error and improve the overall performance and stability of your SAP system.