/etc/oratab 檔案用處

註釋部分已經說的比較清楚 ，主要是可以設定為自動啟動例項，當linux os啟動的時候 。 還有DBCA的時候升級，刪除資料庫時找到相關例項 。

epd2db$cat oratab
#

# This file is used by ORACLE utilities. It is created by root.sh
# and updated by the Database Configuration Assistant when creating
# a database.

[@more@]

# A colon, ':', is used as the field terminator. A new line terminates
# the entry. Lines beginning with a pound sign, '#', are comments.
#
# Entries are of the form:
# $ORACLE_SID:$ORACLE_HOME::
#
# The first and second fields are the system identifier and home
# directory of the database respectively. The third filed indicates
# to the dbstart utility that the database should , "Y", or should not,
# "N", be brought up at system boot time.
#
# Multiple entries with the same $ORACLE_SID are not allowed.
#
#
# *:/u01/product/oracle:N
*:/u01/product/oracle:N
epd2:/u01/product/oracle:N
ibml6rma:/u01/product/oracle:N