Oracle will do sorting when executing queries that use ORDER BY, GROUP BY, when an Index is created, and when MERGE SORT is invoked by the SQL optimizer.
Oracle 9 introduced a new way to manage rollback / undo data - an Undo Tablespace. To utilize Automatic Undo Management, create a tablespace in the database of type UNDO:
create undo tablespace UNDOTBS1 datafile '/U01/oradata/prod/undotbs_01.dbf'
The redo log file holds transaction information. Each Commit causes a flush to the log. You have multiple log files defined - one is "active" or "online", the others are "offline". Oracle rotates through these files as each gets full. Switching active files has overhead so the suggestion is that each file can hold roughly 30 minutes or transactions.
This is a code example of this command:
SET_DATABASE_PORT OF MYSQL TO PORT
Since 10g Oracle introduced a new feature known as the Database Recyclebin. As an Operative System, recyclebin brings the ability to restore tables (files in OS) that are dropped (deleted).
Installing MySQL in Linux is not a difficult task; here's the step by step guide on how to do it:
You can create temporary tables at runtime to store intermediate results from complex queries and greatly improve your performance.
Instant Client allows you to run your applications without installing the standard Oracle client or having an ORACLE_HOME. OCI, OCCI, Pro*C, ODBC, and JDBC applications work without modification, while using significantly less disk space than before. Even SQL*Plus can be used with Instant Client. No recompile, no hassle.
Create the Dump File:
mysqldump --user=<user> --password=<password> <database> --result-file=<file.sql>