Configuration issue with DRDA Oracle 10g to DB2 UDB v8

Question

Oracle 10.2.0.4 linux RH 64 bit - DB2 UDB v8.2 linux 32 bit. I'm attempting to install transparent gateway to connect from my oracle instance to the db2 instance. I was successful until the step requiring the package rebind and this is the error I get:
SQL> exec GTW$_BIND_PKG@MYDB2SERVER;
BEGIN GTW$_BIND_PKG@MYDB2SERVER; END;
ORA-04052: error occurred when looking up remote object
DB2USER.GTW$[email protected]
ORA-00604: error occurred at recursive SQL level 1
ORA-28527: Heterogeneous Services datatype mapping error
TG4DRDA v10.2.0.1.0 grc=0, drc=-332 (865B,0001), errp=GDJREACS
errmc=1208,819
ORA-02063: preceding 3 lines from MYDB2SERVERMy TNSNAME entry:
MYDB2SERVER =
  (DESCRIPTION =
        (ADDRESS=
          (PROTOCOL=TCP)
          (PORT=1521)
          (HOST=172.xx.xx.xx))
        (CONNECT_DATA=(SID=MYDB2SERVER)
        (HS=)
LISTENER entry:
   (SID_DESC=
        (SID_NAME=MYDB2SERVER)
        (ORACLE_HOME=/home/oracle/oraHomes/gateway)
        (PROGRAM=g4drsrv)
   )DBlink:
SQL> create public database link MYDB2SERVER
  2  connect to db2user identified by mypass
  3  using 'MYDB2SERVER';initMYDB2SERVER.ora (lines I changed):
DRDA_CONNECT_PARM=172.xx.xx.xx:50000
DRDA_REMOTE_DB_NAME=db2
DRDA_RECOVERY_PASSWORD=mypassI'm sure it's just a simple config issue, but I've been racking my rain for hours trying different things and cannot figure it out.
Question - DRDA_REMOTE_DB_NAME - is the the O/S user? or the database instance name? For example, when accessing the DB2 instance, I login to the O/S as db2user but issue 'db2 connect to db2' when connecting to the instance - which value is DRDA_REMOTE_DB_NAME looking for?
Any help is appreciated - thanks

Answer 1

Hi,
You are right, DRDA_REMOTE_DB_NAME should have the name of the Db2 instance.
The error you are getting points to the fact that you are an multibyte character set in either Oracle and/or DB2. The gateway can connect, but first have to be able to map the character sets indicated by the error message:
TG4DRDA v10.2.0.1.0 grc=0, drc=-332 (865B,0001), errp=GDJREACS errmc=1208,819 <<== 1208 and 819 are the CCSIDs
Add the following entries to the gateway codepage.map file -
S 367 > US7ASCII
D 13488 > AL16UTF16
D 1200 = AL16UTF16
M 1208 = UTF8
MBC 1208 = 1208 1200
The default location of the file is $ORACLE_HOME/tg4drda/admin/codepage.map
These values map code page 1208 to Oracle's UTF8 character sets so that the gateway can translate UTF8 data into code page 819 (WE8ISO8859P1).
Regards,
Ed