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What is difference between DB2 and Oracle?

What is difference between DB2 and Oracle?

Db2 is well known for reliability and scalability, while Oracle Database is more known for its wide range of applications, tools, skills, and partners available. Both are very stable databases, with large amounts of documentation and good support. You may also be considering other options, such as Db2 vs. SQL Server.

How do I find Dblink details in Oracle?

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.

Is Db2 still used?

DB2 is most often used by companies with 50-200 employees and 1M-10M dollars in revenue. Our data for DB2 usage goes back as far as 5 years and 11 months. If you’re interested in the companies that use DB2, you may want to check out MySQL and Microsoft SQL Server as well.

How do I check if Dblink is working?

Go to Schema Browser | DB Links tab | highlight the DB Link name you want to test | then click on the “Test Database Link” icon (lightning bolt icon) | and it should give you the test results like below.

How do I see all DB links?

These views are helpful for working with DB links in Oracle:

  1. DBA_DB_LINKS – All DB links defined in the database.
  2. ALL_DB_LINKS – All DB links the current user has access to.
  3. USER_DB_LINKS – All DB links owned by current user.

How do I create a database in Oracle?

Steps for Creating an Oracle Database Step 1: Back up any existing databases. Step 2: Create parameter files. Step 3: Edit new parameter files. Step 4: Check the instance identifier for your system. Step 5: Start SQL*Plus and connect to Oracle as SYSDBA. Step 6: Start an instance. Step 7: Create the database. Step 8: Back up the database.

What is Oracle in DBMS?

Oracle is a fully scalable relational database architecture and is often used by global enterprises, which manage and process data across wide and local area networks. The Oracle database has its own network component to allow communications across networks. Oracle DB is also known as Oracle RDBMS and, sometimes, just Oracle.

What is Oracle DB developer?

An Oracle developer is responsible for creating or maintaining the database components of an application that uses the Oracle technology stack. Oracle developers either develop new applications or convert existing applications to run in an Oracle Database environment.

What is Oracle Database Link?

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.