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HTTP 400 Bad Request when running reports using Apache HTTP Server

Troubleshooting


Problem

When accessing Cognos Analytics using an Apache HTTP Server gateway, running certain reports results in "HTTP 400 Bad Request - Your browser sent a request that this server could not understand. Size of a request header field exceeds server limit".

[{"Business Unit":{"code":"BU048","label":"IBM Software"},"Product":{"code":"SSTSF6","label":"IBM Cognos Analytics"},"Component":"","Platform":[{"code":"PF002","label":"AIX"},{"code":"PF016","label":"Linux"},{"code":"PF033","label":"Windows"}],"Version":"All Versions","Edition":"","Line of Business":{"code":"LOB76","label":"Data Platform"}},{"Product":{"code":"SS6G84","label":"IBM Cognos Analytics on Cloud"},"Business Unit":{"code":"BU048","label":"IBM Software"},"Component":" ","Platform":[{"code":"","label":""}],"Version":"","Edition":"","Line of Business":{"code":"LOB76","label":"Data Platform"}}]

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Document Information

More support for:
IBM Cognos Analytics

Software version:
All Versions

Operating system(s):
AIX, Linux, Windows

Document number:
738697

Modified date:
01 May 2025

UID

ibm10738697