Problem accessing DB Link

From: RS <rs_at_rshome.u-net.com>
Date: Mon, 29 Jan 2001 14:19:18 -0000
Message-ID: <TYed6.557$i54.846329_at_newsr1.u-net.net>


I've created a DB link from one database to another (Oracle 8i on linux).

However, when I try to access data on the linked database, I get the following...

  1* select * from rjs.a_at_RJS
SQL> select * from rjs.a_at_RJSDB
  2 ;
select * from rjs.a_at_RJSDB

                    *

ERROR at line 1:
ORA-12538: TNS:no such protocol adapter

I don't have any problem connecting normally to either database.

I've double checked the TNSNAMES.ORA and LISTENER.ORA files, which seem ok to me...

Here they are...

listener.ora

LISTENER =
  (DESCRIPTION_LIST =
    (DESCRIPTION =
(ADDRESS = (PROTOCOL = IPC)(KEY = EXTPROC0))
(PROTOCOL_STACK =

        (PRESENTATION = TTC)
        (SESSION = NS)
      )

    )
    (DESCRIPTION =
(ADDRESS = (PROTOCOL = TCP)(HOST = linux)(PORT = 1521))
(PROTOCOL_STACK =
        (PRESENTATION = TTC)
        (SESSION = NS)
      )

    )
  )

SID_LIST_LISTENER =
  (SID_LIST =
    (SID_DESC =
(SID_NAME = PLSExtProc)
(ORACLE_HOME = /u01/app/oracle/product/815)
(PROGRAM = extproc)

    )
    (SID_DESC =
(ORACLE_HOME = /u01/app/oracle/product/815)
(SID_NAME = DEMO)

    )
    (SID_DESC =
(ORACLE_HOME = /u01/app/oracle/product/815)
(SID_NAME = RJS)

    )
    (SID_DESC =
(ORACLE_HOME = /u01/app/oracle/product/815)
(SID_NAME = RJS2)

    )

tnsnames.ora...

ORCL =
  (DESCRIPTION =
    (ADDRESS_LIST =
(ADDRESS = (PROTOCOL = TCP)(HOST = AMDPENTIUM3)(PORT = 1521))
    )
    (CONNECT_DATA =
(SID = ORCL)

    )
  )

DEMO =
  (DESCRIPTION =
    (ADDRESS_LIST =
(ADDRESS = (PROTOCOL = TCP)(HOST = linux)(PORT = 1521))
    )
    (CONNECT_DATA =
(SID = DEMO)

    )
  )

RJS =
  (DESCRIPTION =
    (ADDRESS_LIST =
(ADDRESS = (PROTOCAL = TCP)(HOST = linux)(PORT = 1521))
    )
    (CONNECT_DATA =
(SID = RJS)

    )
  )

RJS2 =
  (DESCRIPTION =
    (ADDRESS_LIST =
(ADDRESS = (PROTOCAL = TCP)(HOST = linux)(PORT = 1521))
    )
    (CONNECT_DATA =
(SID = RJS2)

    )
  )

Can anyone shed any light on why I get the error.

Thanks in Advance.

Replies by email also please

RS. Received on Mon Jan 29 2001 - 15:19:18 CET

Original text of this message