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What are DB links used for?
A database link is a schema object in one database that enables you to access objects on another database. The other database need not be an Oracle Database system. However, to access non-Oracle systems you must use Oracle Heterogeneous Services.
Are database links bad?
Database links, like any tool, have their uses and misuses. There is nothing inherently insecure about using a database link. But there are certainly plenty of ways to architect a system using database links that is insecure. A database link lets you connect one database to another.
What is link DB?
DBGET/LinkDB is designed to be a network distributed database system with an open architecture, which is suitable for incorporating local databases or establishing a specialized server environment. It also has an advantage of simple architecture allowing rapid daily updates of all the major databases.
What is private DB Link?
Database links can be public or private. A public database link is one that can be used by any user. A private database link can be used only by the database link’s owner.
How can we make database links more secure?
Best Practices for Database Links This restricts access to the DBLink to the owner of the DBLink. Use accounts with minimal privileges to access the database link. Ensure that the DBLink connection is encrypted in transit, by using, say SSL. Restrict the IP addresses from which the DB Link connection may originate.
How do I find db links?
Any user can query USER_DB_LINKS to determine which database links are available to that user. Only those with additional privileges can use the ALL_DB_LINKS or DBA_DB_LINKS view.
What is a dB link good for in Oracle?
The primary reason to use database links is to enable database operations to be stored in a local procedure but to operate on the data in a remote database. This can be useful if the data has been brought up to date in a local database, but needs to be recorded for some business reason in some remote database.
Which is the Best Database Link to use?
Database links are good for small data move, you might consider using Export/Import or Data Pump for larger data sets. There are two types of db links available in Oracle. Public and Private are two types of database link available in Oracle. Detail regarding database link are found << here >>
What are the different types of DB links?
There are two types of db links available in Oracle. Public and Private are two types of database link available in Oracle. Detail regarding database link are found << here >> A Query using DB link is slow when the table in remote database is huge and or network latency.
What is the definition of a database link?
A database link is a pointer that defines a one-way communication path from an Oracle Database server to another database server. The link pointer is actually defined as an entry in a data dictionary table.