Question Re: How to Handle "Allocation failed; Reason: booked memo... in Technology Q&A

How to Handle "Allocation failed; Reason: booked memory limit reached" Error in SAP HANA Procedure?

seyfeddine — Fri, 28 Jun 2024 08:12:08 GMT

Hello SAP Community,

I am encountering an error when running my stored procedure in SAP HANA:

Error: (dberror) [129]: transaction rolled back by an internal error: Allocation failed; Reason: booked memory limit reached (SAP Note 3191224);

I have already modified the statement memory limit and global allocation limit settings to try and improve the memory usage, but the error persists.

My questions are:

How can I allow the procedure to continue running even if it takes a long time without encountering this memory error?
- I need the procedure to handle long-running processes and avoid termination due to memory issues. Are there specific settings or coding practices that can help achieve this?
How can I optimize the memory usage in my SAP HANA procedure?
- What are the best practices for improving memory efficiency in stored procedures? Are there any specific configurations or code optimizations that can help reduce the memory footprint?

Additional Context:

I am running this procedure on SAP HANA Cloud.
I have already tried increasing memory allocation settings but need more granular control and optimization.

Any guidance or suggestions would be greatly appreciated.

Thank you!

Re: How to Handle "Allocation failed; Reason: booked memo...

HakanHaslaman — Tue, 09 Jul 2024 20:23:10 GMT

To handle the "Allocation failed; Reason: booked memory limit reached" error in SAP HANA procedure, follow these steps:

1. Analyze memory usage.
2. Optimize SQL statements.
3. Use temporary tables.
4. Implement batch processing.
5. Use cursors for large result sets.
6. Monitor memory usage.
7. Increase memory allocation.
8. Consider parallel execution.
9. Optimize data models.

Test changes in a non-production environment before applying them to production.

Re: How to Handle "Allocation failed; Reason: booked memo...

seyfeddine — Mon, 15 Jul 2024 08:20:03 GMT

Thank you for your answer.

We have tested these solutions, but we still encounter the error. We would like to know if there is a way to avoid the error, even if the procedure takes more time. For example, on my laptop, if an operation consumes a lot of memory, it does not generate a memory error but simply takes longer to execute.

Thank you.

Re: How to Handle "Allocation failed; Reason: booked memo...

LMichael — Sat, 19 Oct 2024 05:27:12 GMT

@seyfeddine, i trust you are well. How did you end up resolving the issue?

Re: How to Handle "Allocation failed; Reason: booked memo...

seyfeddine — Mon, 21 Oct 2024 07:35:33 GMT

To address the memory performance issue, I applied several optimizations based on the points mentioned. These included adjusting system configurations and optimizing SQL queries, which helped improve efficiency and reduce memory load. Despite these improvements, the solution was still not fully adequate for the system's demands. After thorough analysis, I concluded that upgrading to a SAP instance with higher memory capacity was the most practical and effective option for ensuring stable performance under high loads.

Re: How to Handle "Allocation failed; Reason: booked memo...

LMichael — Sun, 27 Oct 2024 08:44:40 GMT

@seyfeddine Thank you for your response. I’ve also optimized my queries, but I’m still encountering memory issues. If it’s possible, could you kindly share the configuration of your instance, particularly the disk space and memory? I appreciate your assistance

Re: How to Handle "Allocation failed; Reason: booked memo...

seyfeddine — Mon, 28 Oct 2024 08:29:51 GMT

Re: How to Handle "Allocation failed; Reason: booked memo...

seyfeddine — Mon, 28 Oct 2024 08:33:36 GMT

Memory 32 GB ,disque espace 120 GB ,2vCPUs