By Paul DuBois
In the second one version of MySQL Paul DuBois presents an up-to-date, entire advisor to 1 of the most well-liked relational database systems.
MySQL is the most well-liked open resource database server on the earth, with greater than 2 million installations and shoppers together with Yahoo!, MP3.com, Motorola, and NASA.
MySQL 4.0, now in general to be had, is a long-awaited replace to the database administration method that has many new good points, together with a brand new desk definition dossier structure, superior replication, and extra features for an entire textual content search.
Instead of giving readers only an outline of MySQL 4.0, DuBois keeps to incorporate the main sought-after solutions to the questions he hears typically from the community.
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Extra info for MySQL: the definitive guide to using, programming, and administering MySQL4
You can use either RMAN or user-managed methods to create backup scripts. If you set persistent configurations using RMAN’s CONFIGURE command, however, then you should not typically need to write extensive scripts. You can regularly run BACKUP DATABASE PLUS ARCHIVELOG. See Also: Oracle9i Recovery Manager User’s Guide and Reference to learn how to create, delete, replace, and print stored scripts Performing Backups Before and After You Make Structural Changes Administrators as well as users make changes to a database.
Table 1–1 describes the version and system requirements for the Oracle backup and recovery methods. 0 and higher Third-party media manager (only if backing up to tape) Operating System Physical All versions Operating system backup utility (for example, UNIX cp) Export Logical All versions N/A Feature Comparison of Backup Methods Besides being limited by system requirements, the backup and recovery solution you choose should be driven by the features that you want. Table 1–2 compares the features of the different backup methods.
Can use archived logs as well as the online logs. ■ Requires explicit invocation by a user. ■ ■ Does not detect media failure (that is, the need to restore a backup) automatically. After a backup has been restored, however, detection of the need to recover it through media recovery is automatic. Has a recovery time governed solely by user policy (for example, frequency of backups, parallel recovery parameters) rather than by Oracle internal mechanisms. The database cannot be opened if any of the online datafiles needs media recovery, nor can a datafile that needs media recovery be brought online until media recovery has been executed.