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.
The DBMS_REDEFINITION package allows for online table reorganization and redefinition, helping to reclaim unused space and improve performance without significant downtime.
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.
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.
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.
