I have been getting an error as follows when a query is running to delete a huge amount of data:
ORA-01652: unable to extend temp segment by 1598 in tablespace ORA_TEMPSPACE
I have increased the tempspace from 40 megabytes to 500 megabytes, and even after that I am seeing these errors. I have a few questions on this:
- What is the cause for this error?
- Does the hard disk space also matter here? If there is no space in the hard disk, does the tablespace still fail to extend, even though it has been resized ?
- What are the possible things that need to be checked on the database server before extending it further?
It sounds like you need more space in your TEMP tablespace. If you have set your TEMP tablespace's datafiles to automatically extend when more space is needed, then verify that the disk volume is not full. Otherwise, you can add another datafile to your TEMP tablespace.
If your TEMP tablespace is created with TEMPFILES (this can be verified by querying the DBA_TEMP_FILES view), then there is a bug in Oracle 9i where the temporary sort segments in the TEMP tablespace were not being released to be reused by new queries. This bug meant that space was slowly being lost in the TEMP tablespace. This bug is not present in Oracle 10.1.0.3. So one suggestion is to upgrade your database. If that is not possible, then consider recreating your TEMP tablespace without tempfiles.
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