Oracle tips and tricks.
In the administration of an Oracle database there are times when we will have to create a new password file due to corruption, lack of space for administrators, or new database creation. Oracle provides the utility ORAPWD to accomplish such a task. This article will cover the use of the utility ORAPWD to [...]
Oracle provides database links to create direct connections from one database instance to another. This feature can come in handy in the movement of small to moderate amounts of data between systems. In this article we will review the creation of the DDL to regenerate public database links defined within an Oracle database.
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Oracle uses synonyms to point users to other schema objects when the user does not have direct access to that schema. This is generally accomplished by creating a synonym owned by public to a private schema object. Once the public synonym is created all users have access to the private schema object. [...]
Oracle uses Sequences to generate unique numbers to identify specific records. Once a sequence has been defined all a programmer or Oracle developer needs to obtain a unique key value for a record is to call the sequence. This article demonstrates how to generate the DDL for an already defined sequences in an [...]
Oracle tablespaces provide storage of permanent and temporary data within the an Oracle database. The two forms of Oracle tablespaces are permanent which is used to store data which can survive restart of the database and temporary which is used for sort and other temporary storage requirements and does not require survival on restart [...]
With the advent of Oracle 10g Import and Export data pump utility, the need to recreate a user account from scratch has been greatly reduced. However, there are still situation when you may need the SQL to recreate a specific user within another Oracle environment or just desire to see the creation statements. [...]
Oracle provides views to allow you to hide the structures of under lying tables, to combine multiple tables into a single logical structure, and to reduce the complexity of SQL being generated against a database. Views allow the developer the flexibility to give users the look and feel of the database they desire, while [...]
Oracle uses PROFILES to limit the access and resources a user has within an Oracle database. In a properly secured Oracle environment care must be taken in defining resource limits of your users. This article covers the creation of the DDL to define an Oracle profile already established in one database and recreate [...]