2459623 - "An error occurred in the BW service: Result set is too large; data retrieval restricted by configuration" error when importing / creating model from Import BW connection in SAP Analytics Cloud (SAC)

• When trying to create a model from an Import SAP BW or SAP BW/4HANA connection in SAP Analytics Cloud (SAC), the following error is shown: "An error occurred in the BW service: Result set is too large; data retrieval restricted by configuration".
• Model on same query can be created successfully by using the live connection
• Tomcat Catalina.log contains the following error:
  - SEVERE [pool-144-thread-1] com.sap.fpa.cloud.rest.bw.BWTaskRunner.readQueryData Error in BW ResultSet: SIZE_LIMIT_EXCEEDED - Result set is too large; data retrieval restricted by configuration
  - SEVERE [189] com.sap.fpa.cloud.internal.DAException.logException Result set is too large; data retrieval restricted by configuration

• SAP Analytics Cloud
• SAP BW or SAP BW/4HANA via Import Data connection

1. Log on to SAC tenant.
2. Create a model using Import Data Connection to SAP BW.
3. Select one BEx query having data more than 100,000 rows to build query.
4. Click Create button in Build SAP BW Query dialog.
   => Note the error: "An error occurred in the BW service: Result set is too large; data retrieval restricted by configuration"

• BW Safety belt is reached per https://blogs.sap.com/2014/07/06/safety-belt-for-sap-bw-as-data-source/
  or
• BW Safety belt parameters are excessively high 

Recommended Solutions:

• Modify the existing BW query to decrease the number of returned data cells.
• Split the import into multiple queries and use the 'Append' functionality to add it to the same model in SAP Analytics Cloud per Updating and Scheduling Models.

Alternative Solution:

• Increase the BW Safety Belt (Not Recommended)
  Set BICS_DA_RESULT_SET_LIMIT_DEF and BICS_DA_RESULT_SET_LIMIT_MAX to a large enough value to accommodate the data cells returned by your query per SAP Note 1127156 - Safety belt: Result set is too large
   - Please note: Avoid setting safety belts limits to excessive values because they would be ignored and the error would persist 
  
  
• Negative Implications of increasing the BW Safety Belt

• Increasing the BW Safety Belt may result in a negative impact on the BW system performance and, if too high, cause out-of-memory (OOM) dumps. It will also affect all other front-end applications, like Analysis for Office, SAP BusinessObjects WebI, etc.
• You may receive errors such as "An internal server error occurred in the Data Acquisition Service" requiring the increase of JVM memory settings for the Tomcat server where SAP Analytics Cloud Agent is deployed.
  
  Increasing Tomcat JVM Memory

1. Navigate to your Tomcat directory's "Bin" folder and Run "Tomcat8w.exe" as an Administrator
2. Navigate to the "Java" tab
3. At the bottom increase the values of "Initial Memory Pool" and "Maximum Memory Pool" such as 1024 and 2048 respectively.
   
   Please make sure that the Maximum Memory Pool allocation does not exceed the amount of Physical memory on the machine which hosts your Tomcat and SAP Cloud Agent, as this may result in decreased performance, or crashing.

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