What happens if temp tablespace is full

Look at this example:. If you remove all tempfiles from a temporary tablespace, you may encounter an error:. Use the following statement to add a tempfile to a temporary tablespace:. To resize temporary files in Oracle database :. Locally managed temporary tablespaces have temporary datafiles tempfiles , which are similar to ordinary datafiles except:.

Note: This arrangement enables fast tempfile creation and resizing, however, the disk could run out of space later when the tempfiles are accessed. Each database can be assigned one and only one default temporary tablespace. Using this feature, a temporary tablespace is automatically assigned to users. Assigning temporary tablespace group as default temporary tablespace:. Assigning temporary tablespace group to a user same as assigning temporary tablespace to a user :.

Monitoring Temporary Tablespaces. In Oracle 11g , temporary tablespace or its tempfiles can be shrunk, up to a specified size. Shrinking frees as much space as possible while maintaining the other attributes of the tablespace or temp orary files. The optional KEEP clause defines a minimum size for the temporary tablespace or temporary file. This trace file will contain a wealth of information, including the exact text of the SQL statement that was being processed at the time that the ORA error occurred.

This diagnostic event imposes very little overhead on the system, because Oracle only writes information to the trace file when an ORA error occurs. You can set a diagnostic event for the ORA error in your individual database session with the following statement:. The above statement will affect the current instance only and will not edit the server parameter file. That is to say, if you stop and restart the instance, the diagnostic event setting will no longer be active.

You can deactivate the ORA diagnostic event or remove all diagnostic event settings from the server parameter file with statements such as the following:. The entry in the instance alert log that indicates an ORA error occurred will also indicate that a trace file was written.

An entry in the instance alert log will look like this:. From the trace file you can clearly see the full text of the SQL statement that failed.

You can also see when it failed along with attributes of the database session such as module, action, and service name. It is important to note that the statements captured in trace files with this method may not themselves be the cause of space issues in the temporary tablespace. For example, one query could run successfully and consume The second query is the one that will get captured in a trace file, while the first query is more likely to be the root cause of the problem.

The trace file will contain additional information, including a call stack trace and a binary stack dump. This information is not likely to be useful, unless perhaps you want to learn more about Oracle internals.

The diagnostic event facility has been built into the Oracle database product for a very long time, but it is not widely documented. In general, you absolutely should not try setting diagnostic events in a production database unless you have a very good idea of what they do. Although I am not aware of an Oracle Support document that officially blesses setting diagnostic event for identifying SQL statements that fail due to lack of sort space, there are bulletins on Metalink that do show how to set events to dump an error stack for basic Oracle errors.

Metalink document We are doing the exact same thing here for the ORA error, and therefore it seems like a relatively safe thing to do. Like most debugging or diagnostic facilities, you should only use the ORA diagnostic event to the extent you really need to. Instead of waiting for a temporary tablespace to fill and for statements to fail, you can monitor temporary space usage in the database in real time. The following query displays information about all sort segments in the database.

Typically, Oracle will create a new sort segment the very first time a sort to disk occurs in a new temporary tablespace. The sort segment will grow as needed, but it will not shrink and will not go away after all sorts to disk are completed.

A database with one temporary tablespace will typically have just one sort segment. All legitimate Oracle experts publish their Oracle qualifications. Oracle technology is changing and we strive to update our BC Oracle support information. If you find an error or have a suggestion for improving our content, we would appreciate your feedback.

Ask the community. Platform Notice: Server and Data Center Only - This article only applies to Atlassian products on the server and data center platforms. This problem is very specific and you will most probably not encounter it. However, in case you are experiencing it, please continue reading. Oracle TEMP tablespace keeps on increasing at a rapid rate without any significant pattern.

The TEMP tablespace will only be reduced if you restart the application. Oracle uses TEMP tablespace in order to store data used while executing database queries.