SAP Knowledge Base Article - Public

2412533 - 502, Bad Request, Timeout Proxy errors when leveraging Apache Reverse proxy in SAP Analytics Cloud for accessing data on external internet

Symptom

You can't create a connection to Live Data and receive the error (#502) Proxy Error.

  • The server received an invalid response from an upstream server. The proxy server could not handle the request. /YOURHANASERVER/sap/bc/ina/service/v2/GetResponse

 Apache logs show the following lines:

  • (OS 10060)A connection attempt failed because the connected party did not properly respond after a period of time, or established connection failed because connected host has failed to respond.  : [client IP_ADDRESS:PORT]
  • AH01102: error reading status line from remote server HANASERVER:PORT
  • AH00898: Error reading from remote server returned by /MYAHANA/sap/bc/ina/service/v2/GetResponse

Environment

  • SAP Analytics Cloud
  • Apache server as reverse proxy

Cause

The connection between the Apache server and the HANA server takes too long to complete and Apache closes it because it has set a low timeout.

Resolution

Please be aware of that Path connectivity option is deprecated in SAP Analytics Cloud: https://www.sapanalytics.cloud/resources-direct-cors-live-data-connections/


To fix the above issue increase Apache's ProxyTimeout directive (below example set for 10 minutes):

  • ProxyTimeout 600

More details in Apache documentation:

See Also

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Keywords

EPM, SAP Cloud for Planning, sc4p, c4p, cforp, cloudforplanning, Hana Cloud for Planning, EPM-ODS, Cloud for Analytics, C4P, Cloud4Analytics, CloudforAnalytics, Cloud 4 Planning, HCP, C4A, BOC, SAPBusinessObjectsCloud, BusinessObjectsCloud, BOBJ, BOBJcloud, BOCloud., BICloud, BO Cloud, sac , KBA , LOD-ANA , SAP Analytics Cloud (SAC) , LOD-ANA-BI , Business Intelligence Functionality, Analytic Models , LOD-ANA-PL , Planning , LOD-ANA-BR , SAC Boardroom , LOD-ANA-PR , SAC Predicitive , Problem

Product

SAP Analytics Cloud 1.0