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Message type: E = Error
Message class: RT - Monitoring infrastructure MSG and alert texts
Message number: 563
Message text: &1 &3 > &2 &3 (15 Min.) SAP buffer swap exceeds threshold
The threshold value for the number of swaps per minute has been
exceeded. A swap is the exchanging of information between the buffer
itself and the database.
You can find information in this topic in:
<DS:TX.SMOI_BUFFER_MANAGEMENT_INFO>Background Information About SAP
Buffers</>
<LS>SAP Library -> Basis Components -> Computing Center Management
System (BC-CCM) -> Computing Center Management System (BC-CCM) -> CCMS
Monitoring -> SAP Buffers</>
Error message extract from SAP system. Copyright SAP SE.
RT563
- &1 &3 > &2 &3 (15 Min.) SAP buffer swap exceeds threshold ?The SAP error message RT563 indicates that the buffer swap for a particular area has exceeded a predefined threshold. This typically relates to the SAP memory management system, specifically the buffer management for the database. When the buffer swap exceeds the threshold, it can lead to performance issues, as the system is spending too much time swapping data in and out of memory.
Cause:
High Buffer Swap Activity: The primary cause of this error is that the buffer swap activity is too high, which can occur due to:
- Insufficient buffer memory allocated for the database.
- High volume of data being processed that exceeds the buffer capacity.
- Inefficient database queries or application logic that leads to excessive data retrieval.
- Changes in workload patterns that were not anticipated.
Configuration Issues: Incorrect configuration of the buffer settings in the SAP system can also lead to this error. This includes parameters related to the size of the buffers and the thresholds set for swapping.
Solution:
Increase Buffer Size:
- Review and increase the size of the relevant buffers in the SAP system. This can be done by adjusting the parameters in the instance profile (e.g.,
abap/buffersize
).- Ensure that the database and application server have sufficient memory allocated.
Optimize Queries:
- Analyze and optimize the database queries that are causing high buffer usage. This may involve indexing, rewriting queries, or changing the way data is accessed.
Monitor and Adjust Thresholds:
- Review the thresholds set for buffer swapping and adjust them if necessary. This can help in reducing the frequency of the error message.
Check System Performance:
- Use transaction codes like ST02 (Buffer Monitor) and ST04 (Database Performance Monitor) to analyze buffer performance and identify bottlenecks.
- Monitor the overall system performance to identify any other areas that may be contributing to the high buffer swap activity.
Review Workload Patterns:
- If there are changes in workload patterns, consider adjusting the system configuration to better accommodate the new patterns.
Related Information:
By addressing the underlying causes and implementing the suggested solutions, you can mitigate the occurrence of the RT563 error and improve the overall performance of your SAP system.
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