EM 13c, EM 12c : Alerts are not Raised for "DB Alert Log" / "Alert Log" Metrics of Target Database if DB and Agent are Installed by Different OS users
(Doc ID 2137632.1)
Last updated on DECEMBER 06, 2021
Applies to:Enterprise Manager for Oracle Database - Version 188.8.131.52.0 and later
Information in this document applies to any platform.
Using Enterprise Manager (EM) to monitor a target database, whose alert.log reports multiple ORA- errors. However, no alerts are raised for the "DB Alert Log" or the "Alert Log" metric of this target database, though the thresholds match and the ORA- error is not part of the Filter expression for the "Generic alert log error" metric.
The <AGENT_INST>/sysman/log/emagent_perl.trc file reports the below errors:
alertlog.pl: Tue May 3 18:33:46 2016: WARN: target: FAD7524FDEE1E951D878EAA8FD6AAA8B; unable to open alert log at /u01/app/oracle/product/11.2.0/diag/rdbms/orcl/ORCL/trace/alert_orcl.log ..................... alertlog_dedup.pl: Tue May 3 18:36:52 2016: WARN: target: FAD7524FDEE1E951D878EAA8FD6AAA8B; unable to open alert log at /u01/app/oracle/product/11.2.0/diag/rdbms/orcl/ORCL/trace/alert_orcl.log
- The Agent and the target DB have been installed by two different OS users and the Agent OS user.
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