张某，女性，20岁，口底蜂窝织炎，其最严重的后果是（） 脓毒症。 高热。 呼吸困难、窒息。 中耳炎。 淋巴结炎。
对成功或失败进行归因时，属于不可控制的因素有（） 能力。 运气。 努力。 任务难度。
You have a listener process， L1， currently listening for the connections to the PROD and ADMIN databases. You create a new database， PAY， using CREATE DATABASE.. command. You have not enabled dynamic instance registration. You modified the LISTENER.ORA file manually to include PAY database for L1 listener process. Which command of Listener control utility （LSNRCTL） would you use to enable L1 process to start listening for the connections to the PAY database without disrupting any existing database communications？（） START。 RELOAD。 RESTART。 REFRESH。 START L1。 RELOAD L1。 RESTART L1。 REFRESH L1。
View the Exhibit and examine the parameters. User A executes the following command to update the TRANS table： SQL> UPDATE B.trans SET tr_amt=tr_amt+500 WHERE c_code=’C005’； Before user A issues a COMMIT or ROLLBACK command， user B executes the following command onthe TRANS table： SQL> ALTER TABLE trans MODIFY （tr_type VARCHAR2（3））； What would happen in this scenario（） The ALTER TABLE command modifies the column successfully.。 The DDL operation gets higher priority and transaction for user a is rolled back.。 The ALTER TABLE command waits indefinitely until user a ends the transaction.。 The ALTER TABLE command fails after waiting for 60 seconds due to the resource being busy.。
在制订行车作业计划是，满载率定额在高峰时段一般取值为（）（范围值），平峰期一般取值为（）（范围值）。
The database is currently running in the NOARCHIVELOG mode. What would be the first step to configure Flashback Database？（）
