JDBC Application Generates DB Performance Problems Showing A Lot Of Executions of dbms_utility.get_tz_transitions() Package
Last updated on FEBRUARY 14, 2018
Applies to:JDBC - Version 22.214.171.124 and later
Information in this document applies to any platform.
A JDBC application experiences intermittent periods of severely reduced throughput, not necessarily associated with any external factors. Database profiles reveal that a large amount of time is spent servicing requests for execution of dbms_utility.get_tz_transitions(). The timezone setting in the client JVM is reasonable (that is, it is a timezone known to the Oracle database), so improper timezone setting is not the cause.
In a security hardening exercise the package dbms_utility, which normally has public access, had its access restricted.
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