客户遇到个问题，描述如下：--环境是ORACLE 9.2.0.8
（语句及场景非真实了，网上找的，情况是一致的）
创建了一个DB_LINK连接另一个Oracle数据库。 select * from tablename@dblinkname;
单句执行没问题，但是把这句SQL写到存储过程内：
create or replace procedure prc_test
is
begin
insert into test
select * from tablename@dblinkname;
commit;
end;
就发生如下错误,存储过程编译不通过：
Compilation errors for PROCEDURE prc_test
Error: PL/SQL: ORA-04052: 在查找远程对象 tablename@dblinkname 时出错
ORA-00604: 递归 SQL 层 1 出现错误
ORA-03106: 致命的双工通信协议错误
ORA-02063: 紧接着line（源于XXX(被连接的数据库服务名)）
Line: 4
Text: insert into test
Error: PL/SQL: SQL Statement ignored
Line: 4
Text: insert into test
#########################################################
以下metalink上解决问题方法，打上对应的补丁即可
--这里我未打补丁，只是找出原因向客户说明而已。
Subject: Errors ORA-00604 And ORA-03106 During Procedure Compilation
Doc ID: 577347.1 Type: PROBLEM
Modified Date : 26-MAY-2008 Status: MODERATED
Applies to:
PL/SQL - Version: 9.2.0.4 to 9.2.0.8
This problem can occur on any platform.
This note applies only if the underlying Oracle Client is below 9.2.0.8 Patch 4
Symptoms
While trying to run pl/sql code involving queries which access remote objects, you may endup getting below errors:
PL/SQL: ORA-04052: error occurred when looking up remote object <object name>
ORA-00604: error occurred at recursive SQL level 1
ORA-03106: fatal two-task communication proto error
ORA-02063: preceding line from AFQ
When the same query is run outside pl/sql block it runs perfectly.
Cause
You are most probably hitting the Bug 5866805.
Bug 5866805 duplicate of Bug 5576340 which is itself a duplicate of Bug 5671074.
Solution
The Bug 5671074 IS fixed IN 9.2 .0 .8 Patch 4 OR above.
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