uid=1001(oracle) gid=100(users) groups=16(dialout),33(video),100(users),1000(dba)
/home/oracle#crontab -e
You (oracle) are not allowed to use this program (crontab)
See crontab(1) for more information
oracle用户被禁止使用crontab指令
1：查看cron.allow
linux:/etc # cat cron.allow
ecamapp
dbuild
ecamapp
ecamapp
ecamapp
dbuild
ecamapp
ecamapp
2：修改cron.allow，添加oracle用户
linux:/etc # cat cron.allow
ecamapp
dbuild
ecamapp
ecamapp
oracle
ecamapp
dbuild
ecamapp
ecamapp
oracle
3：再次使用crontab -e检查crontab指令是否可用