Oracle defines the ORA-7445 as an unhandled exception error that could be result of an Oracle bug. The ORA-7445 errors depend on the version of the Oracle software, OS version.
For more details about the error, you need to check the trace files generated. The ORA-7445 exception generates a trace file located under the CORE_DUMP_DEST directory for oracle versions prior to 11g and under the ADR Home / cdump (Automatic Diagnostic Repository) for 11g versions.
This article is not indented to give solutions to all ORA-7445 errors. For any details about the ORA-7445 errors please use the ORA-600/ORA-7445/ORA-700 Error Look-up Tool [ID 153788.1] and open a service request.