Db_link name and synonym in PL/SQL block

Question

Hi,
I'm having a problem with synonyms in PL/SQL block.
Say, I have two schemas A and B.
In schema A, I create some tables and stored procedures.
In schema B, I create a db link connecting to schema A. Then I create some synonyms for tables and stored procedures in schema A with the db link. In stored procedures created in schema B, I need to access or reference objects in schema by using synonyms.
My problem is, if schema A and schema B reside on the same db instance and the instance's global_names is set to true, I will not be able to reference any synonyms in stored procedures created in schema B. The error message is,
PL/SQL: ORA-00980: synonym translation is no longer valid.
A simple example:
In schema A,
create table mytable (A char(2));
In schema B,
create database link <global_name-for-schema-A>@loopback connect to A identified by <A-pwd> using '<net-service-name-for-schema-A>';
create synonym mytable for mytable@<global_name-for-schema-A>@loopback;
declare
a char;
begin
select * from mytable;
end;
But I have no problem to access the synonym-ed objects in SQL*PLUS.
Please help.
Thanks

Answer 1

I had the similar problem i did a work around like below
SQL>select max(col1) from tab1;
MAX(COL1)
21161910
SQL>get a
1 declare
2 a number;
3 begin
4 select max(col1) into a from tab1;
5 dbms_output.put_line(a);
6* end;
SQL>@a
select max(col1) into a from tab1;
ERROR at line 4:
ORA-06550: line 4, column 1:
PL/SQL: ORA-00980: synonym translation is no longer valid
ORA-06550: line 4, column 1:
PL/SQL: SQL Statement ignored
Created a view on top of the synonym
SQL>create or replace view tab1_v as select * from tab1@db1;
View created.
changed the pl/sql block as below to get it from view instead of synonymn
declare
a number;
begin
select max(col1) into a from tab1;
dbms_output.put_line(a);
end;
Now it worked
SQL>@a
21161910
PL/SQL procedure successfully completed.