I’m using 12.6.0.53 and the Alert Log Viewer cannot survive a database restart.
Exception:
2.1 Date : Mon, 26 Jan 2015 05:03:22 -0500
2.2 Address : 04A088EE
2.3 Module Name: Toad.exe - (Toad™ for Oracle®)
2.5 Type : EAccessViolation
2.6 Message : Access violation at address 04A088EE in module ‘Toad.exe’. Read of address 00000049
2.7 ID : 739D0000
2.8 Count : 1
2.11 Sent : 0