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How to investigate OEM warning message: "1 segments in SYSTEM tablespace unable to extend" (Doc ID 1486206.1)

Last updated on AUGUST 04, 2018

Applies to:

Enterprise Manager for Oracle Database - Version to [Release 11.1 to 11.2]
Oracle Database - Enterprise Edition - Version to [Release 11.2]
Information in this document applies to any platform.


OEM reports that segments are unable to extend in SYSTEM tablespace. However no problem in the SYSTEM tablespace  segments can be detected. The alert shows the following message:
1 segments in SYSTEM tablespace unable to extend

Generic format from database.xmlp:               MESSAGE="%value% segments in %name% tablespace unable to extend."

How to check the problematic segment which is larger than the largest chunk free space in the tablespace?


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