Learn Oracle's Harvest __oracle again

Recently followed puppet together again Oracle9i 9.2.0.1, although previously learned from the DBA's point of view to study every problem, but after all, not enough cow fork we will find that the entire Oracle system architecture is not what we can, so this time to change the angle, From the actual combat point of view to use and management, of course, this will be used to put the first, the first day down when found that even the basic lsnrctl start command do not know, but also do not know tnsnames and listener even think they have learned a long time Oracle, Now it's ridiculous to think back.
Turn crazy brother took the first stage, found himself in the former j2se on the basis of a little improvement, write code more than before the standard, now follow Puppet is also very good, said that we will do after the project is also biased to JS map processing, really a little relieved, You know, these are the things I feel a little scared of now, but I believe there is a gain.
Recently, before learning Oracle9i, the database system concept of the fifth edition of the Chinese version of the book Speed read again, found something not previously found, such as in the SQL "cascade" can also be said to be nested queries can actually save more time to query, but the development of the time is based on the development of efficiency decisions, Not just operational efficiency, see things management, found a very serious problem, that is, I have always thought that the roolback is wrong, thanks to see again, or later in the interview when the loss, but fortunately in Oracle will also detail this kind of problem, in the FK PK problem I still think it is difficult, thanks to both MSSQL and Oracle are similar, the place of mutual take is there.
A long time no QQ space nonsense, today to nonsense, yesterday slight heat arrived, Changsha stove slowly, I also follow in the back, slowly slow down.