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DB Security Interview Questions

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Installing and upgrading the Oracle Server and application tools.
Allocating system storage and planning future storage requirements for the database system. Managing primary database structures (tablespaces) Managing primary objects (table,views,indexes)
 Enrolling users and maintaining system security. Ensuring compliance with Oralce license agreement Controlling and monitoring user access to the database. Monitoring and optimizing the performance of the database. Planning for backup and recovery of database information. Maintain archived data on tape
Backing up and restoring the database. Contacting Oracle Corporation for technical support.

The Tablespace to contain schema objects created without specifying a tablespace name.
SYSTEM is the default tablespace. if the user doesnt have a default tablespace, or hasnt mention the default tablespace clause while creating the table, the table would be created in the SYSTEM tablespace.

A user account is a schema which is used to store database objects, applications, and components, and to determine a user's database privileges.

DBA - role Contains all database system privileges.
SYS user account - The DBA role will be assigned to this account. All of the base tables and views for the database's dictionary are store in this schema and are manipulated only by ORACLE.
SYSTEM user account - It has all the system privileges for the database and additional tables and views that display administrative information and internal tables and views used by oracle tools are created using this username.

The steps are :
* First set REMOTE_LOGIN_PASSWORDFILE=EXCLUSIVE in init.ora file
* Then dbs$orapwd file=orapw$ORACLE_SID password=sys force=y
* Then startup force;
* Then grant sysdba to user(any user in the database);
* Then conn user/user
* Then conn user/user as sysdba
* Then show user

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