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Undo data is stored in a logical database structure called an undo tablespace. When you archive your redo log, you write redo log files to another medium location prior to their being overwritten. You can archive to multiple locations, including a standby database. Trusted by more than 50,000 customers worldwide, IDERA tools are user-focused, designed with the
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See „Changing Oracle Collaboration Suite Schema Passwords” for special instructions for changing the Oracle Collaboration Suite Application schema passwords. The following is an example for viewing the ORASSO schema password. Backup files are technically not database files, but rather copies of the database in some form that can be used to recover the database should a failure causing loss of data occur. Ideally, you open a database in read-only mode when you alternate a standby database between read-only and recovery mode. Many sites use procedures to enable automatic startup of one or more Oracle Database instances immediately following a system start. The procedures for performing this task are specific to each operating system.

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For information about automatic startup, see your operating system specific Oracle documentation. The following scenarios describe and illustrate the various states in which you can start up a Oracle Collaboration Suite Database instance. Some restrictions apply when combining clauses of the STARTUP https://remotemode.net/become-a-sql-dba-developer/ command. In addition, you can force the instance to start, or start the instance and have complete media recovery begin immediately. The STARTUP command clauses that you specify to achieve these states are described in „Scenarios for Starting a Oracle Collaboration Suite Database Instance”.

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Your database’s redo log consists of groups of redo log files. A group consists of a redo log file, and its multiplexed copies. Each identical copy is said to be a member of that group, and each group is defined by a number, such as group 1. The database log writer process writes redo records from the memory buffer to a redo log group until the group fills up, or a log switch operation is requested, then it writes to the next group. This is done in a circular fashion, where the oldest group is overwritten by the most recent redo records. Every Oracle database has a set of two or more redo log files.

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SQL is an English-like computer programming language for accessing and manipulating data contained in a database. It is an industry-standard language for accessing databases, including those provided by vendors other than Oracle. You can also view performance and status information about your database instance. In the same way that a mentor can help you get
started in your career, and classes and certifications can keep your technology and product knowledge
and skills up-to-date, DBA communities can provide ongoing support and information.

  • And you have to do it all with a clear view of where your
    organization needs to be.
  • Table 6-2 lists the appropriate method for changing some OracleAS Metadata Repository schema passwords.
  • This section answers frequently asked questions about managing the OracleAS Metadata Repository.
  • The level of granularity to be used is defined on a per-database basis by the database administrator.
  • Many typical Oracle Collaboration Suite configurations include a single instance of the Collaboration Suite Database, installed on the Infrastructure tier.
  • Free space can either be given back to the tablespace or kept in the table for future inserts.

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