401 Unauthorized and JCO_COMMUNICATION_FAILURE error from database to pi

[Former Member]

Hello,

While fetching fro database, error occured in sxmb_moni :

<SAP:Category>XIServer</SAP:Category>

<SAP:Code area="INTERNAL">UNAUTHORIZED</SAP:Code>

<SAP:P1>401</SAP:P1>

<SAP:P2>Unauthorized</SAP:P2>

   And

     

<SAP:Category>XIServer</SAP:Category>

<SAP:Code area="MAPPING">JCO_COMMUNICATION_FAILURE</SAP:Code>

<SAP:P1>Error when opening an RFC connection (CPIC-CALL: 'ThSAPOCMINIT' :
cmRc=27 thRc=6</SAP:P1>

<SAP:P2 />

<SAP:P3 />

<SAP:P4 />

<SAP:AdditionalText />

    <SAP:Stack>&quot;COMMUNICATION FAILURE&quot; during JCo call. Error when
opening an RFC connection (CPIC-CALL: &#39;ThSAPOCMINIT&#39; : cmRc=27
thRc=6</SAP:Stack>

<SAP:Retry>N</SAP:Retry>

</SAP:Error>

  Theses errors dont always occured  .   During only intense data flowing

Thanks

Nurhan

[markangelo_dihiansan · Accepted solution]

Hello,

You can check this document:

https://www.sdn.sap.com/irj/scn/index?rid=/library/uuid/c059d583-a551-2c10-e095-eb5d95e03747&overrid...

See section 2.2.2 HTTP 401 Authentication Failure during high load

Also see SAP Note 821026 - Adapter Engine messaging URL returns 401 under high load

Hope this helps,

Mark

[Former Member · Accepted solution]

Hi,

Thank you for your replay. I changed parameterd. I will observe system.

Regards

Nurhan

[iaki_vila]

Hi,

If your PI system is 7.1 or above you can use also the integrated configuration object (ICO), with this configuration you avoid the connection between PI Adapter Engine with the PI ABAP engine and the corresponding authentication.

Regards,

[Former Member]

ok i will try

[iaki_vila]

Hi Nurhan,

You are answering yourself, with high volume of connections the RFC receiver has problems.

You could increase it to 50, check this link

Regards.