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SQL> select * from v$version
;
 
BANNER
----------------------------------------------------------------
Oracle Database 10g Enterprise Edition Release
10.2.0.1.0 - Prod
PL/SQL Release 10.2.0.1.0 - Production
CORE    10.2.0.1.0      Production
TNS for Linux: Version 10.2.0.1.0 - Production
NLSRTL Version 10.2.0.1.0 - Production
2
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SQL> show parameter service_names
 
NAME                                 TYPE       
VALUE
------------------------------------ -----------
------------------------------
service_names
                       string      RACDB.chenxu.yo2.cn
SQL>
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RACDB =
  (DESCRIPTION =
    (ADDRESS_LIST =
      (ADDRESS = (PROTOCOL = TCP)(HOST = 192.168.1.170
)(PORT = 1521))
      (ADDRESS = (PROTOCOL = TCP)(HOST = 192.168.1.171
)(PORT = 1521))
      (LOAD_BALANCE
= on)
    )
    (CONNECT_DATA =
      (SERVICE_NAME = racdb.chenxu.yo2.cn)
    )
  )
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