[单选]

You have issued a SHUTDOWN ABORT command to bring down your database instance. Consider the stepsthat will be performed later when you open the database：
1. SGA is allocated.
2. Control file is read.
3. Redo log files are read.
4. Instance recovery is started.
5. Background processes are started.
6. Data files are checked for consistency.
7. Server parameter file or the initialization parameter file is read. 
Which option has the correct order in which these steps occur（）

对于国内产品实行产销地征税原则，而对于进出口产品实行消费地原则的税种是（） 增值税。 营业税。 消费税。 所得税。 简述结构游戏的指导要点。 A company wants to run multiple applications on an x445 to serve their user base.  OS and application licensing cost is a factor. Which TWO questions will help the specialist decide on the operating environment and the number of processors per server？（） What are the applications’ scaling （multi-threading） capabilities？。 How does L3 cache size impact application performance？。 How many servers are running the applications today？。 What is the expected size of the data attached to the server in GB’s？。 Will the applications disable the Hyperthreading on the Xeon processor？。 影响小企业道德规范建立的因素是什么？ You need to change the definition of an existing table. The COMMERCIALS table needs its DESCRIPTION column changed to hold varying length characters up to 2000 bytes. The column can currently hold 1000 bytes per value. The table contains 20000 rows. Which statement is valid?（） ALTER TABLE commercials MODIFY (description CHAR2(2000));。 ALTER TABLE commercials CHANGE (description CHAR2(2000));。 ALTER TABLE commercials CHANGE (description VARCHAR2 (2000));。 ALTER TABLE commercials MODIFY (description VARCHAR2 (2000));。 You cannot increase the size of a column if the table has rows.。

You have issued a SHUTDOWN ABORT command to bring down your database instance. Consider the stepsthat will be performed later when you open the database：
1. SGA is allocated.
2. Control file is read.
3. Redo log files are read.
4. Instance recovery is started.
5. Background processes are started.
6. Data files are checked for consistency.
7. Server parameter file or the initialization parameter file is read. 
Which option has the correct order in which these steps occur（）