If 1000 users are connected to the db, and Listener is up and running suddenly system is hanging what will do ?
Which one is strongest normal form? Why?
Latest Answer: Boyce codd normal form is the strongest normal form......... ...
How to copy database from one machine to another machine in MYSQL? Explain with an example?
Latest Answer: Make a dump of the database to be copied : mysqldump -u root -p --databases --opt MyDatabase > MyDatabase.sql
Copy MyDatabase.sql to the second machineImport the database to MysSQL server : mysql -u root -p < MyDatabase.sql ...
How can I copy a table from one database instance to another database instance
Latest Answer: By using Db link ...
Why do we need a DDL and DML in a database system?
Latest Answer: DDL is nothing but Data Definition Language . It is very important for a dadabase that we have to define the data such that we can create tables , alter tables, ...
What is the difference between Subquery and Corelated Subquery?Give some examples of each
What is the difference between Case and Decode?In what situation we can use Case and Decode
Latest Answer: DECODE works with expressions which are scalar values.CASE can work with predicates and subqueries in searchable form:CASE is an ANSI standard, where as Decode is proprietary for OracleWe can use expressions as part of case statements, where as Decode ...
What is Upper and Lower Checkpoint?
Latest Answer: only the size differs in nvarchar2 length is much more compare to varchar2 ...
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