Oracle Faq

Hi All,
Recently One of our clients observed that archive logs were automatically
getting deleted  from the flash receovery area of the database.
The alert log of the database reported the deleteion of the archive log
as shown below
Tue Aug 7 01:37:12 2007
Deleted Oracle managed file +CNDB2/cndb/archivelog/2007_07_12/thread_2_seq_2001.2595.627775693
Tue Aug 7 02:57:12 2007
Thread 2 advanced to log sequence 2813
Current log# 13 seq# 2813 mem# 0: +CNDB2/cndb/onlinelog/group_13.3352.627502381
Current log# 13 seq# 2813 mem# 1: +CNDB2/cndb/onlinelog/group_13.3350.627502381
Tue Aug 7 […]

Hi All,
I would like to discuss the most common error which is encountered by many people who are new to oracle database on Windows systems.This error is
  ORA-12560: TNS:protocol adapter error
The above error occurs whenever you try to start the database on windows without starting the Oracle Service of that particular database as shown
C:\>set oracle_sid=test
C:\>sqlplus
SQL*Plus: Release […]