Messages not processed by integration server after SP09 to SP16

Operating System: Windows NT 2003 Standard edition Service Pack 1

Database: SQL_Server_8.00, DBSL:640.00 Patch Level: 100

ABAP Kernel: Non Unicode; Release: 640; Patch: 109;

XI: Version 3.0; Service Pack Stack:16

Host: PEARL; IPAddress: 10.1.1.13

We upgraded from service pack stack 09 to 16 and since then no messages

are getting routed to integration server. We tried a cache access

though TCODE: SXI_CACHE and it said "if_http_client receive

http_communication_failure". Then we went to ICM monitoring through

TCODE: SMICM and saw that the http service that runs on 8000 port is

inactive when we tried to activate it gave an error. Here is the

snapshot from the trace file.

[Thr 3492] *** ERROR => NiIBind: service '8000' (8000) in use

[nixxi_r.cpp 3845]

[Thr 3492] *** ERROR => NiIListen: NiBind (rc=-4) [nixxi_r.cpp

767]

[Thr 3492] *** ERROR => IcmBindService: NiBuf2Listen failed for host

PEARL:8000 (rc=-4): NIESERV_USED [icxxserv.c 1549]

When we tried to access runtime workbench through integration builder

webpage it says "page not found".

When we tried to login to the J2EE visual admin using the default

account(J2EE_admin) it gave the

error "http://pearl:8101/msgserver/text/logon returned empty list of

connection parameters."

In SAPMMC we looked at the system log and saw the error "SAP Basis

System: Operating system call gethostbyaddr failed (error no. 0 )".

We tried restarting the whole server but to no effect.