SQL Optimizer for SQL Server – Summary

SGA refers to a Shared Global Area. As the term global implies, this area is accessible to all Oracle processes and users. Each instance will have its own SGA. Oracle processes and users must share la...

The redo logs store all transactions which alter the database, all committed updates, adds, deletes of tables, structures or data. If archiving is disabled, only data in the current off-line and on-li...