解决ORA-02069: global_names parameter must be set to TRUE for this operation 问题

问题产生背景：

多数据库分库，在各个库之间采用dblink连接，DML操作会导致该问题的产生。

解决步骤

1. 各个数据库设置独立地global name， 并enable global name.

   

   select * from global_name;

   alter database rename global_name to MAINDB;

2. 修改tnsnames.ora 和listener.ora.

   vi $ORACLE_HOME/network/admin/tnsnames.ora

   MAINDB =
   (DESCRIPTION =
   (ADDRESS = (PROTOCOL = TCP)(HOST =192.168.198.135)(PORT = 1521))
   (CONNECT_DATA =
   (SERVER = DEDICATED)
   (SERVICE_NAME = orcl)
   )
   )

   IPDB =
   (DESCRIPTION =
   (ADDRESS = (PROTOCOL = TCP)(HOST =192.168.198.136)(PORT = 1521))
   (CONNECT_DATA =
   (SERVER = DEDICATED)
   (SERVICE_NAME = orcl)
   )
   )

   vi $ORACLE_HOME/network/admin/listener.ora

   SID_LIST_LISTENER = (
   SID_LIST = (
   SID_DESC =
   (GLOBAL_DBNAME = MAINDB)
   (ORACLE_HOME = /db/oracle/product/11.2.0/db_1)
   (SID_NAME=orcl)
   )
   )

各个库都要这样修改。

1. 把DBLINK name 设置成和global name保持相同.

   删除旧的db link： drop database link ORCLMAIN;

   在MAINDB上建立到IPDB的link
   Create database link IPDB connect to admin identified by 123
   using ‘IPDB’;

2. 从库也要建立到主库的反向DBLINK，命名原则同上.

   在IPDB上建立到MAINDB的link

   Create database link MAINDB connect to admin identified by 123

3. 创建表同义词

   create synonym IP_RECORD for IP_RECORD@IPDB ;

http://blog.csdn.net/huzhenwei/article/details/2533869
https://dba010.wordpress.com/2011/01/05/oracle-errorsora/#ORA-02069
http://blog.csdn.net/wwwer1/article/details/7297551