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Welcome to Tibero GTS!

Oracle Client Setup Guide (Tibero to Oracle DBLink)

Document Type | Technical Information 

Field | Interface/Integration

Applicable Product Versions | 6FS07PS, 7FS02, 7FS02PS

Document Number | TIITI001

 

Overview

This document guides you on how to configure a DBLink from Tibero DB to Oracle.
  • Set up Gateway on the Tibero server after installing Oracle Instant Client
  • When configuring DBLink from Tibero DB to Oracle, install Oracle Instant Client and set up Gateway on the Tibero server

 

Method

Pre-check and Configuration 

1. listener.ora Configuration (Use the same listener name)

SID_LIST_LISTENER=
 (SID_LIST=
     (SID_DESC=
        (SID_NAME=orcl)
        (ORACLE_HOME=/home/oracle/db/product/11.2.0/dbhome_1)
      )
     )

LISTENER=
 (DESCRIPTION_LIST=
   (DESCRIPTION=
     (ADDRESS=(PROTOCOL=TCP)(HOST=192.168.58.130)(PORT=1521))
   )
 )

 

2. tnsnames.ora Configuration

ORA =
 (DESCRIPTION =
   (ADDRESS = (PROTOCOL = TCP)(HOST = 192.168.58.130)(PORT = 1521))
   (CONNECT_DATA =
     (SERVER = DEDICATED)
     (SERVICE_NAME = orcl)
   )
 )

LISTENER_ORA =
  (ADDRESS = (PROTOCOL = TCP)(HOST = 192.168.58.130)(PORT = 1521))

 

3. Restart listener

$ lsnrctl stop
$ lsnrctl start

 

[Tibero Server] Oracle Client Installation

1. Create Oracle Client directory

$ mkdir /home/tibero/oracle
$ chmod -R 777 /home/tibero/oracle

 

2. Install and unzip the Instant Client matching your Oracle version

 $ unzip instantclient-basic-linux.x64-19.21.0.0.0dbru.zip

 

3.  Configure .bash_profile for the tibero OS account

 $ vi ~/.bash_profile

#. Oracle config
export ORACLE_HOME=/home/tibero/oracle/instantclient_19_21
export TNS_ADMIN=$ORACLE_HOME/network/admin
export NLS_LANG=KOREAN_KOREA.UTF8


#.---- TIBERO config
export TB_HOME=/home/tibero/tibero7
export TB_SID=tibero
export PATH=.:$TB_HOME/bin:$TB_HOME/client/bin:$JAVA_HOME/bin:$ORACLE_HOME:$PATH
export LD_LIBRARY_PATH=$TB_HOME/lib:$TB_HOME/client/lib:$LD_LIBRARY_PATH:$ORACLE_HOME:$LD_LIBRARY_PATH


export TBGW_HOME=$TB_HOME/client/gateway

 

Apply the settings

 $ source ~/.bash_profile

 

4. Create tnsnames.ora file

$ mkdir -p $ORACLE_HOME/network/admin
$ vi $ORACLE_HOME/network/admin/tnsnames.ora

ORA=
(DESCRIPTION=
   (ADDRESS=(PROTOCOL=TCP)(HOST=192.168.58.130)(PORT=1521))
   (CONNECT_DATA=
     (SERVER=DEDICATED)
     (SERVICE_NAME=orcl)
   )
)

 

5. Copy Tibero Gateway file to $TBGW_HOME

$ cp $TB_HOME/client/bin/gw4orcl $TBGW_HOME/

Note
Starting from tibero7, the gw4orcl file is provided as a single unified file.

 

6. Create $TBGW_HOME/oracle/config directory and create tbgw.cfg file

$ mkdir -p $TBGW_HOME/oracle/config
$ vi $TBGW_HOME/oracle/config/tbgw.cfg

LISTENER_PORT=9999
LOG_DIR=/home/tibero/tibero7/client/gateway/oracle/log
LOG_LVL=2

Caution
If LOG_DIR is not set to an absolute path, the gateway may terminate abnormally. 

 

7. Edit tbdsn.tbr file

$ vi $TB_HOME/client/config/tbdsn.tbr
 
oracle=(
       (GATEWAY=
       (LISTENER=(HOST=localhost)(PORT=9999))
       (TARGET=ORA)
       (TX_MODE=GLOBAL)
       )
)

 

8. Check Gateway libraries

$ cd $TBGW_HOME
$ ls
gw4orcl  oracle

 

Verify library linkage

It is necessary to verify that Oracle Instant Client libraries are properly linked.

$ ldd gw4orcl 
       linux-vdso.so.1 =>  (0x00007ffc0cf92000)
       libclntsh.so.19.1 => /home/tibero/oracle/instantclient_19_21/libclntsh.so.19.1 (0x00007fa2fcd70000)
       libdl.so.2 => /lib64/libdl.so.2 (0x00007fa2fcb6c000)
       libpthread.so.0 => /lib64/libpthread.so.0 (0x00007fa2fc950000)
       libm.so.6 => /lib64/libm.so.6 (0x00007fa2fc64e000)
       libc.so.6 => /lib64/libc.so.6 (0x00007fa2fc280000)
       libnnz19.so => /home/tibero/oracle/instantclient_19_21/libnnz19.so (0x00007fa2fbc07000)
       libnsl.so.1 => /lib64/libnsl.so.1 (0x00007fa2fb9ed000)
       librt.so.1 => /lib64/librt.so.1 (0x00007fa2fb7e5000)
       libaio.so.1 => /lib64/libaio.so.1 (0x00007fa2fb5e3000)
       libresolv.so.2 => /lib64/libresolv.so.2 (0x00007fa2fb3c9000)
       /lib64/ld-linux-x86-64.so.2 (0x00007fa300f7f000)
       libclntshcore.so.19.1 => /home/tibero/oracle/instantclient_19_21/libclntshcore.so.19.1 (0x00007fa2fae24000)

 

9. Run Gateway and verify connection

Start Gateway

$  ./gw4orcl 

$ ps -ef| grep gw4
tibero    13883      1  0 06:54 ?        00:00:00 ./gw4orcl
tibero    35737  10765  0 13:36 pts/0    00:00:00 grep --color=auto gw4

 

Test DBLink connection

$ tbsql tibero/tmax@oracle
tbSQL 7  

TmaxTibero Corporation Copyright (c) 2020-. All rights reserved.
Connected to ORACLE GATEWAY using oracle.


SQL> select * from dual;


DUMMY
-----
X

1 row selected.

 

 

 

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