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  Oracle Database Tips by Donald Burleson

Monitoring Tablespace Autoextend Settings

In addition to space usage and fragmentation monitoring, if you use the autoextend feature, you need to monitor database autoextend status and data file locations. Source 11.16 shows the SQL to create a view that monitors autoextend data for pre-Oracle8. In pre-Oracle8 versions, the only way to get this information was to query the SYS table FILEXT$, which, unfortunately, looks like this:

See Code Depot  

Using this view, it is then easy to create a simple SELECT that gets autoextend and data file location information from a single view, along with all of the pertinent sizing information. The Oracle Administrator Storage Manager does show this information under the data files section. In Oracle8i, the view DBA_DATA_FILES contains the columns AUTOEXTENSIBLE (YES or NO), MAXBYTES, MAXBLOCKS, and INCREMENT_BY, which allow for ease of report generation and monitoring of the autoextension capabilities of all data files.

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