CMALLC :rc=20 > connect from SAP gateway to RFC server failed

[Former Member]

Hi everyone,

hope all are doing great in their respected projects.Iam trying to connect to my BI Dev system(as i have loaded some transaction data) to create a query using BEx.iam getting this error

" CMALLC :rc=20 > connect from SAP gateway to RFC server failed "

Error Group

RFC_ERROR_COMMUNICATION

Message

CMALLC : rc=20 > Connect from SAP gateway to RFC server failed

Connect_PM GWHOST=119.226.55.555, GWSERV=sapgw00, SYSNR=00

LOCATION SAP-Gateway on host bwdevelopment.DOMAIN.LOCAL / sapgw00

ERROR hostname 'segment-119-226.sify.net' unknown

TIME Wed Oct 12 17:41:15 2011

RELEASE 720

COMPONENT NI (network interface)

VERSION 40

RC -2

MODULE ninti.c

LINE 895

DETAIL NiPGetHostByName: 'segment-119-226.sify.net' not found

SYSTEM CALL getaddrinfo

COUNTER 2

Could you please anyone know about this,gimme solution?or provide me the link if some one already knew about the earlier posts.

Thanks in advanced..

[former_member714518]

Thanks for your kind information and i was searching for the method and it is very helpful for our site bismatrimony now my problem has been solved

thanks and regards

Anil

[manuel_fernandezmelgar]

OK, let me translate what worked for me:

1) go to transaction RZ10 look for a profile whose type is "instance profile"

2) check the Extended maintenance radio button

3) look for the parameter: SAPGLOBALHOST  write down this value (something like LC02)

4) Create a new SAP login entry in your PC. in the "application Server" field value use the value obtained in point 3 (the value you wrote down)fill the other parameters: Instance number and system ID, description (you can copy these values from other entries on the same sap logon)

5) open Notepad, usually want to run it as administrator, rightclick on Notpad and run it as administrator (in case you have Access Deny problem)

6) on your PC open  the "hosts"  file C:\Windows\System32\drivers\etc

  to see all files when you choose open, at the right hand you will see a dropbox that has TexDocuments.txt as the host file is not a txt file on the same drop box choose Allfiles (*.*)

7) add the IP address of the sap server then an space and then the value obtained from point 3

like this without any pounds at the beginning

Example:

39.395.999.999 LC02

😎 save your entry, and try to run BEX selecting the entry you just created on you SAP LOGON.

Hope this  will help someone.

regards

[Former Member]

Your solution works beautifully. Thanks.

[former_member225306]

Hi,

RZ10-- Maintenance of profile parameters

please check below link for more detail about maintenance of profile information:

http://help.sap.com/saphelp_nw70/helpdata/EN/c4/3a616a505211d189550000e829fbbd/frameset.htm

Thanks,

Venkat

[Former Member]

Hi iam sorry for the late reply.we have implemented some SAP Notes(148832,447882).still we are getting the same error but with different details

"Error Group

RFC_ERROR_COMMUNICATION

Message

CMALLC : rc=20 > Connect from SAP gateway to RFC server failed

Connect_PM GWHOST=119.226.46.102, GWSERV=sapgw00, SYSNR=00

LOCATION SAP-Gateway on host bwdevelopment.DOMAIN.LOCAL / sapgw00

ERROR partner 'segment-119-226.sify.net:sapgw00' not reached

TIME Tue Oct 18 17:27:53 2011

RELEASE 720

COMPONENT NI (network interface)

VERSION 40

RC -10

MODULE nixxi.cpp

LINE 3271

DETAIL NiPConnect2: 119.226.46.102:3300

SYSTEM CALL connect

ERRNO 10060

ERRNO TEXT

see the ERROR,ERRNO is different from the previous details..can you tell me where actually this problem is occuring?whether it is there in the office networks or in the remote server networks(because we have servers at client place and we are accessing them in office remotely)

thanking you,

[former_member225306]

Hi,

The following entry then appears in the dev_rfc trace file:

T:3560 ======> Connect from SAP gateway to RFC server failed

Connect_PM GWHOST=X.X.X.X, GWSERV=sapgw00,

ASHOST=X.X.X.X, SYSNR=00

LOCATION SAP Gateway on host hostname/sapgw00

ERROR partner not reached (host X.X.X.X, service sapgw00)

Since the specified IP address is not known to the gateway, the Analyzer

cannot communicate with the gateway.

Solution

The gateway host and the actual target are usually identical. In this

case, you can use parameter gw/alternative_hostnames to indicate to the

gateway than the external IP address received identifies the host.

Caution: gw/alternative_hostnames may only be set in the instance

profile and under no circumstances in the DEFAULT.PFL!!!

It should resolved your issue.

Thanks,

Venkat

[Former Member]

Hi guys..sorry for late reply.my problem has been solved by the basis people.i asked them that how they have sloved this??they told me about some rz10 tcode..there they have done something with parameters for the IP address im using..so if you people have any idea on the above tcode try it on ur systems or find some info on the tcode why we use it??

thanking you all the people who tried to help me??

[Former Member]

Actually I am also facing the same error , Like yours.

RFC_ERROR_COMMUNICATION

Message

CMALLC : rc=27 > Connect from SAP gateway to RFC server failed

Connect_PM GWHOST=157.227.158.218, GWSERV=sapgw00, SYSNR=00

LOCATION SAP-Gateway on host biwlive / sapgw00

ERROR timeout during allocate

TIME Mon Feb 06 14:45:17 2012

RELEASE 640

COMPONENT SAP-Gateway

VERSION 2

RC 242

MODULE gwr3cpic.c

LINE 1820

DETAIL no connect of TP sapdp00 from host 157.227.158.218 after 22

sec

COUNTER 4

Can u please ask your basis team what they did to rectify this ?

It will be much of help for me.

Thanks

Vimarsh

[arvind_doomra]

Dear Yarpath,

What is the GUI version you are using? Please confirm the BEx front end patch:

Make sure that you use GUI 7.20 and latest Frontend patches.

Regards,

Arvind

[former_member225306]

hi,

Please ensure that hostname 'segment-119-226.sify.net' is correct:

"hostname ''segment-119-226.sify.net" unknown"

447882 RFC_ERROR_COMMUNICATION BEx Analyzer: no back end connection

148832 - IP address conversion with a firewall

882741 - SAP Logon: "Logon balancing error", service 'sap...'

654982 : URL requirements due to Internet standards.

Do not use fully qualified domain names and regular domain names

at the same time. Generally the URLs are only allowed to differ

in the prefix (URL1: http://prefix1.aa.bb.cc.com URL2: http://prefix2.aa.bb.cc.com).

See notes 654326, 805344 and 596698.

If note 447882 couldn't solve the problem, please try to replace the IP

address in the SAP logon box with the host name and enter the host name

in the host file on the frontend.

And if your BW system is Unicode, please verify whether the frontend

PC which has the error connecting 'Bex Analyzer' has a hostname in

non-English language. If so, please change the hostname of the

problematic PC to English and it would resolve the issue.

Thanks,

Venkat