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Most commonly, a database link is used to connect to a user in a remote database, where the USING clause points to an entry in the database servers "tnsnames.ora" file. For local links, the special entry of 'local' is used.
4 ημέρες πριν · CLOB column over DB Link Hi Tom,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 pred
23 Φεβ 2023 · We have 20 oracle instances in our warehouse environment. The management is planning to change the password of all the schemas in every database once a month. However, we have db links in each database that points to other databases. In fact we have tens and hundereds of database links. If the password is changed, then the db link doesn't work.
18 Μαρ 2010 · SELECT DBMS_METADATA.GET_DDL(object_type, object_name, owner) FROM all_OBJECTS WHERE (OWNER = 'your schema name'); and then search in the result the pattern of the db_link, which looks like @dblink_name.
14 Απρ 2011 · While database links (DB links) provide significant advantages for distributed data access and management, they also come with certain drawbacks and considerations. Here are some of the cons of using DB links in Oracle databases: Security Risks: DB links can potentially introduce security vulnerabilities, especially if they are not properly ...
9 Νοε 2023 · In Oracle, a database link is a connection that allows users to access data from a remote database as if it were stored locally. It acts as a bridge between two databases and eliminates the...
Concepts related to distributed databases include distributed database architecture, database links, transaction processing, application development, and character set support.
