Top Oracle Security Interview Questions :: ALLInterview.com http://www.allinterview.com Top Oracle Security Interview Questions en-us What are the steps to switch a database's archiving mode between http://www.allinterview.com/showanswers/14188.html To check database is in which mode 1. Conn sys/sys as sysdba 2. select log_mode from v$database To set database in Archivelog mode 1. shutdown immediate; 2. startup mount; 3. alter database archivelog; 4. alter database open; To set d what is snapshot log ? http://www.allinterview.com/showanswers/14199.html It is a table that maintains a record of modifications to the master table in a snapshot. It is stored in the same database as master table and is only available for simple snapshots. It should be created before creating snapshots. What is the use of ANALYZE command ? http://www.allinterview.com/showanswers/14191.html To perform one of these function on an index,table, or cluster: - to collect statisties about object used by the optimizer and store them in the data dictionary. - to delete statistics about the object used by object fro What are the dictionary tables used to monitor a database spaces ? http://www.allinterview.com/showanswers/14181.html DBA_FREE_SPACE DBA_SEGMENTS DBA_DATA_FILES. What is Tablespace Quota ? http://www.allinterview.com/showanswers/3259.html amount of tablespace that can br used by a user for creating his own database onjects is called talespace quota.ita a way of limiting the usage of memory or disk space by user or restricting him by giving a fixed disk space. How can we reduce the network traffic ? http://www.allinterview.com/showanswers/14192.html Replication of data in distributed enviroonment. Using snapshots to replicate data. Using remote procedure calls. What are the benefits of distributed options in databases ? http://www.allinterview.com/showanswers/14201.html Database on other servers can be updated and those transactions can be grouped together with others in a logical unit. Database uses a two phase commit. What are roles ? How can we implement roles ? http://www.allinterview.com/showanswers/14187.html If a user wants to give some privileges to another user or a group of users then they will create role and they give this role to the users.let the privileges be 'insert' and 'update' on 'emp' table then instead of How can you Enforce Refrencial Integrity in snapshots ? http://www.allinterview.com/showanswers/14197.html Time the references to occur when master tables are not in use. Peform the reference the manually immdiately locking the master tables. We can join tables in snopshots by creating a complex snapshots that will based on the master tables. When will the data in the snapshot log be used ? http://www.allinterview.com/showanswers/14200.html We must be able to create a after row trigger on table (i.e., it should be not be already available ) After giving table privileges. We cannot specify snapshot log name because oracle uses the name of the master table in the name of the What is snapshots ? http://www.allinterview.com/showanswers/14193.html Snapshots are read-only copies of a master table located on a remote node which is periodically refreshed to reflect changes made to the master table. How to prevent unauthorized use of privileges granted to a Role ? http://www.allinterview.com/showanswers/3257.html By creating a Role with a password What are the various type of snapshots ? http://www.allinterview.com/showanswers/14194.html Simple and Complex. What are the use of Roles ? http://www.allinterview.com/showanswers/3250.html roles are group of previlages. for example say there are 100 clerks in the company.they all need some privilages to do their work.instead of granting each clerk all the privilages,we create a role called clerk and assign it to all 100 employee What dynamic data replication ? http://www.allinterview.com/showanswers/14196.html Updating or Inserting records in remote database through database triggers. It may fail if remote database is having any problem