Determine used and free space in a tablespace

This small Oracle script can be executed as a script file from the SQL*Plus prompt and reports the total size, used space, free space and percentage of used and free space in all the tablespaces in a database. Very useful for DBAs! The user executing this script should have the select privilege on the dba_free_space and dba_data_files views. The script has been tested on Oracle 8i enterprise and standard editions.

Reader Feedback

Paul S. writes: I find it frustrating to find a freespace tip that does not take into account the fact that if tablespace has no freespace then it in not listed in the table. The simple solution is to place an outer join in the where clause, as use nvl like so:

Note changes on lines 5, 6, 7, 8, & 16.

For More Information

• Feedback: E-mail the editor with your thoughts about this tip.
• More tips: Hundreds of free Oracle tips and scripts.
• Tip contest: Have an Oracle tip to offer your fellow DBAs and developers? The best tips submitted will receive a cool prize -- submit your tip today!
• Ask the Experts: Our SQL, database design, Oracle, SQL Server, DB2, metadata, and data warehousing gurus are waiting to answer your toughest questions.
• Forums: Ask your technical Oracle questions--or help out your peers by answering them--in our active forums.
• Best Web Links: Oracle tips, tutorials, and scripts from around the Web.

Digg This!     StumbleUpon     Del.icio.us

RELATED CONTENT Oracle database administrator Understanding SQL string functions What is the difference between a database engineer, architect and administrator? Import on one table from dump file Error during RMAN backup Can I drop a column in SYS schema? STATSPACK tool: transaction vs. execution measurement Should I port from Microsoft Access? How can I find statistics on total memory usage and database connections? Installing multiple Oracle homes Modifying SYS password in a RAC environment

RELATED RESOURCES 2020software.com, trial software downloads for accounting software, ERP software, CRM software and business software systems Search Bitpipe.com for the latest white papers and business webcasts Whatis.com, the online computer dictionary

/ul>

Rate this Tip To rate tips, you must be a member of SearchOracle.com. Register now to start rating these tips. Log in if you are already a member. Submit a Tip DISCLAIMER: Our Tips Exchange is a forum for you to share technical advice and expertise with your peers and to learn from other enterprise IT professionals. TechTarget provides the infrastructure to facilitate this sharing of information. However, we cannot guarantee the accuracy or validity of the material submitted. You agree that your use of the Ask The Expert services and your reliance on any questions, answers, information or other materials received through this Web site is at your own risk.