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No ‘Access-Control-Allow-Origin’ header is present on the requested resource.

bin.lei-OracleDec 20 2023

OS environment information:

  1. Windows server version: 2008 R2 Standard
  2. IIS version: 7.5
  3. Siebel 15.18.0.0 SI[23048] CHS(*)
  4. Oracle Access Manager 12.2.1.4

First of all, this url can access to siebel application page successfully, so that make sure siebel side is working well:
"http://ip:88/econsumersector_chs/start.swe”

For windows ohs webgate installation according to the following Doc:
Integrating Siebel Applications With Web Single Sign-On (SSO) Systems (ID 1509084.1)
Siebel SSO Integration with OAM 11g ( Doc ID 2060463.1 )
Integrating Siebel Applications With Web Single Sign-On (SSO) Systems ( Doc ID 1509084.1 )

Testing and verifying configuration(ohs listen port 7777):
1.1) To use browser to access url "http://ip:7777", it can redirect to OAM login page and prompt credentials correctly, iis home page is working finally.
[result: ok]

1.2) If try to use browser to access siebel application url "http://ip:7777/econsumersector_chs/start.swe", it can redirect to OAM login page and prompt credentials correctly, but failed to enter siebel application page and used development tool of chrome to see eror existed below:

Access to XMLHttpRequest at ‘http://10.100.239.37:88/econsumersector_chs/start.swe?….’ from origin ‘http://10.100.239.37:7777' has been blocked by CORS policy: No ‘Access-Control-Allow-Origin’ header is present on the requested resource.
[result: failure]

So how to fix this issue? thanks in advance.

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Added on Dec 20 2023
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