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A good way around this is to create a view in SCHEMA_B that exposes the table you want to access through the database link. This will also give you good control over who is allowed to select from the database link, as you can control the access to the view. Do like this:
4 ημέρες πριν · We have a query which has to get a set of rows over the db link which has a CONTAINS predicate on a column of CLOB. E.g. There is a DB A and DB B with table T1( c1 varchar2(10),c2 clob) . I want to run a query from DB A using dblink on DB B to query T1 which has a CONTAINS predicate on c2 and based on the query the rows have to return c1 from t1.
In SQL Server I can create a view that is a join between two tables that are in completely different servers using Linked Server. If I change one of the servers from SQL Server to be Oracle, can I still do the same?
23 Ιουν 2021 · Database link ( Dblink ) is used for connection between 2 different Oracle database. You can query any table from Remote database using DBLink in Oracle database. To use dblink, you need to create database link in target database like following. CREATE public DATABASE LINK PRODLINK. CONNECT TO mehmet. IDENTIFIED BY mehmet.
After you have created a database link, you can use it in SQL statements to refer to tables, views, and PL/SQL objects in the other database by appending @dblink to the table, view, or PL/SQL object name. You can query a table or view in the other database with the SELECT statement.
A database connection is a SQL Developer object that specifies the necessary information for connecting to a specific database, as a specific user of that database. You must have at least one database connection (existing, created, or imported) to use SQL Developer.
10 Φεβ 2017 · If we need to query a table based on some set of values for a given column, we can simply use the IN clause. But if query need to be performed based on multiple columns, we could not use IN clause(grepped in SO threads.)
