DESC, showing the different type of data value via dblink
Hi friends,
We have two databases and for two of them, the configuration is as below
Version of the operating system: Solaris 5.10
DB version: 10.1.0.4
For security reasons, I'm going by names of junk. Assume the names of database DB1 and DB2.
We have a table T1 S1 schema of database DB1. to extract data from this table in DB2 in schema S2, we created a database DB1 and DB2 (lets say the name of dblink is XYZ)
In DB1, in table T1, we have a column by name SYS_CREATED and its data type is varchar2(40 char).
After you create the database link, below we have the table as desc
DESC S1. T1@XYZ
When we describe this statement, instead of showing the value of data type of column SYS_CREATED as varchar2(40 char), it's showing as varchar2(160 Char).
Then, we created a table in DB2 under schema S2 as below
SQL > create table S2. T2 in select * from S1. T1@XYZ;
and now, when we describe the table T2, its original display value is varchar2 (40 Char).
Then just when we described, it shows a higher value for the data type and when we create the table, his watch even than the original. In addition, what is happening to only varchar2 datatype. other data types such as number or tank remain same even when we describe.
one thing is, when he demonstrated a different value using describe, sound exactly multiplying by 4 times. for example, if we have varchar2 (1000 char), the varchar2 (4000 tank) showing
I would like to know if anyone in this strange situation earlier, if so, what is the reason?
Thank you very much in advance
> Unlike when you access a local object, the SELECT
privilege is required to access a remote object because the database has no distance describe ability. The database must be a SELECT *
on the remote object to determine its structure.
http://docs.Oracle.com/CD/B28359_01/server.111/b28310/ds_concepts002.htm
What happens if you give the right to select on the remote object.
Concerning
Girish Sharma
Tags: Database
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