RFC Error Issue From ECC6 to BI 7.

Question

Before it is working fine.. from last 2 days it is not working.
i dont have Basis Team with me right know. plz let me know how to solve.
i checked in SM59 , it seems every thing is fine...
Test Connection Report ( SM59 in R/3 )
Connection Error
Error when opening an RFC connection
ERROR: service 'sapgw01' unknown
LOCATION: SAP-Gateway on host sapgrp / sapgw00
DETAIL: NiPGetServByName: service 'sapgw01' not found
CALL: getservbyname
COMPONENT: NI (network interface)
COUNTER: 879
MODULE: ninti.c
LINE: 489
RETURN CODE: -3
SUBRC: 0
RELEASE: 700
TIME: Sun Mar 09 20:27:56 2008
VERSION: 38
From BI to R/3 it is working fine...
Regards,
SHAIK.

Answer 1

Hi Shaik,
Check did u followed this procedure :
     RFC CONNECTIONS
     First log on to SAP R/3 server connections Go to SCC4 in R/3 & in Scc4 BW server. A screen opens in that logical name of the system would be opened in both (R/3 & BW).
     Take notepad in it save .R/3 & BW logical names go to R/3 & click SM59 to create R/3 connections click then a screen opens gives BW logical name in RFC Destination option & give connection. type 3 & give some description & then press enter.
     You will get another screen under it then at target host gives BW server name we will get it from BW logon change ID, IP address option & give the system no. The system no go to logon pad just drag it then you will see the name.
     Then click on log on securities go to log on give BW server details like No, client user Password. Then save it then click test connection tab if there are errors then it gives yellow color if they are no error the whole thing come as white.
     Then click on the Remote Logon then we go to BW server give RFC – SM59 & click create. Then give the server name which is at the bottom right corner give it then give the no, name, password in logon Security save it & test connection & then remote logon.
     R/3  B W  R/3
     Logical connection source system connection is used to transfer the data from R/3 to BW. Go to BW system& click RSA1 go to source system option go to top to the source systems right click on it. Then click create then a screens opens then.
     PC Flat file ,  DB  Database
     Select the option manual then a screen appears RFC Destination, Logical source name then click OK  then it goes to opens other screen save it test connection then remote login then it go back to the then a screen opens then click only activate.
     BW  RS1  SOURCE SYSTEM  CREATE MANUAL AUTOMATIC CELL
     R/3  Test connections login  back  replicate method  active data R/3 Source system you will able to.
     Firstly go to R/3 Server give LBWE 7 click then a screen opens work on SD scales click on maintenance structure.
     Then a screen opens & click continue then another screen opens in that the left side extract structure right side is communication structure.
     Select a table & drag to the other side. It comes & add in the bottom of the list of the extract & click continue then a screen opens click yes then it gives errors in the system.
     Then go to the maintenance structure & make inactive by licking active. In real time if the new system it would be inactive in sand box. Then a new screen opens & give request Id then click continue go to maintenance & opens the table then click RSA3.
     Then go extract checker then give data source. Then click extraction then click continue then go to LBWG to delete the data. Then new screens opens then give the application then click execute.
     Then a screen opens click continue then it gives in the bottom set up table empty. Go to RSA3 & check it then go to LBWE then go to sales click on maintenance drag a fields from communication to extract structure.
     Then click continue then it won’t gie errors then a screen opens give the screen extract structure generated then go to maintenance & find the fields.
     Now the data source in that the file name which is side by to maintance then screen opens then click ok then a new screen opens of data source. In that selection, hide field, Inversion & field only.
     SELECTION: By selecting the option. In BW at Info Package data Selection/ External data
     Selection option is used to have a range of specific values to be extracted in your BW system. In real time we use selection option a lot.
     HIDE ONLY: by selection Hide only. Then C password can hide only then we can’t see the password hide field is used to hide the header.
     INVERSION: Multiply the data with the –ve value.
     FIELD ONLY; you want to have calculation based on particular field only. We rarely go with this options.
     Then save it & come back to the main screen LO Data extraction to active just click on inactive then a new screen opens then click continue. Then it is activate.
     Then go to Job Control in SD sales then a new screen opens click start date then a new screen opens click Immediate & save it. Then go to Direct delta double click on it then a screen opens click option direct delta ok.
     SBIW Enter it & click itt then a new screen opens then select the option. Setting to application specific data  Logistics then managing extract structure then initialization then filling in the set up table then application then specific set up of statistics data then SD sales option.
     Then a screen opens in control of the set up run then give name of the run  termination date automatically in  termination time  execute it.
     Then a screen opens click continue then a screen opens. Then RSA3 then a screen opens give the data source name then you can find the no of records.
     Come back to BW serer come to source system there you can see the server id name. Then another screen opens there through find symbol find the technical name find the table name.
     If is not found then go to materials right click then a pop up screen opens new replica(dump it to R/3  system)  -> in addition to that Communication structure and Extract structure will be added
Then at the file + could be seen. 3 types of version 
1)active2)modify 3) Delivery
     On the dat source the file could be seen a right click on it. Then apop up screen opens & select the option Replica data source after this. Take the file right click on it. Then a pop up screen opens then select the option Assign Info Source.
     Then a screen opens then select the option content & click Continue.
     Non SAP systems are known as Legacy System.
     The place which is hard to extract is business content 
Regards
Ashwin