Last updated on DECEMBER 25, 2016
Applies to:Oracle Database - Enterprise Edition - Version 10.1.0.2 to 10.2.0.4 [Release 10.1 to 10.2]
Enterprise Manager for Oracle Database - Version 10.1.0.2 to 10.2.0.4 [Release 10.1 to 10.2]
Enterprise Manager Base Platform - Version 10.1.0.2 to 10.2.0.4 [Release 10.1 to 10.2]
Information in this document applies to any platform.
Enterprise Manager for RDBMS - Version: 10.1.0.2 to 10.2.0.4
Enterprise Manager Grid Control - Version: 10.1.0.2 to 10.2.0.4
***Checked for relevance on 25-Dec-2016***
1) Attempts to use DBA_TABLESPACE_USAGE_METRICS have resulted in:
- Inconsistent or incorrect values for DBA_TABLESPACE_USAGE_METRICS when compared to other space metrics using scripts for DBA_DATA_FILES, DBA_TABLESPACES, DBA_FREE_SPACE ... etc.
- Incorrect, undersized or oversized values used by GC, EM or DBConsole for Tablespace metric ALERTs
2) Tablespaces can 'fill up' leading to potential database or application stoppage due to this improper metric assessment. The problem is that by surpassing the expected ALERT thresholds DBAs are not warned of the space utilitization problem.
No known changes are associated with the problem:
- The problem can be intermittent for a single tablespace
- The problem may occur for only one or a few of the total tablespaces measured or monitored by EM ( this is usually the case, making the problem more unexpected )
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