FREE 1Z0-082 Database Maintenance Questions and Answers
What is the main purpose of running the DBMS_STATS.GATHER_SCHEMA_STATS procedure in Oracle?
The DBMS_STATS.GATHER_SCHEMA_STATS procedure collects and updates statistics for all tables, indexes, and other objects in a schema, helping the optimizer make better decisions.
Which Oracle tool is primarily used for performing database maintenance tasks such as backup and recovery?
Oracle Enterprise Manager (OEM) is a comprehensive management tool that allows DBAs to perform various maintenance tasks, including backup and recovery, performance tuning, and monitoring.
What is the purpose of the ANALYZE command in Oracle Database maintenance?
The ANALYZE command is used to gather statistics about the data in tables and indexes, which are then used by the optimizer to generate efficient execution plans.
Which Oracle utility is used to reorganize tables and indexes to reclaim unused space?
The DBMS_REDEFINITION package allows for online table reorganization and redefinition, helping to reclaim unused space and improve performance without significant downtime.
Which of the following is a proactive database maintenance task to prevent tablespace overflow?
To prevent tablespace overflow, DBAs can increase the size of existing datafiles or add additional datafiles to a tablespace, ensuring there is enough space for data growth.