log39=log3(3×3)=3.
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You want to set the following initialization parameters for your database instance: LOG_ARCHIVE_DEST_1 = 'LOCATION=/disk1/arch' LOG_ARCHIVE_DEST_2 = 'LOCATION=/disk2/arch' LOG_ARCHIVE_DEST_3 = 'LOACTION=/disk3/arch' LOG_ARCHIVE_DEST_4 = 'LOCATION=/disk4/arch MANDATORY' Identify the statement that correctly describes this setting.（）
A.The MANDATORY location must be a flash recovery area. B.The optional destinations may not use the flash recovery area. C.This setting is not allowed because the first destination is not set as MANDATORY. D.The online redo log file is not allowed to be overwritten if the archived log cannot be created in the fourth destination.
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命令“grep&39;root&39;/var/log/secure”的作用是（）
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Your database is in ARCHIVELOG mode. You have two online redo log groups, each of which contains one redo member. When you attempt to start the database, you receive the following errors: ORA-00313: open failed for members of log group 1 of thread 1 ORA-00312: online log 1 thread 1: 'D:/REDO01.LOG' You discover that the online redo log file of the current redo group is corrupted. Which statement should you use to resolve this issue?（）
A.ALTER DATABASE DROP LOGFILE GROUP 1; B.ALTER DATABASE CLEAR LOGFILE GROUP 1; C.ALTER DATABASE CLEAR UNARCHIVED LOGFILE GROUP 1; D.ALTER DATABASE DROP LOGFILE MEMBER 'D:/REDO01.LOG
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Your database is in ARCHIVELOG mode. You have two online redo log groups, each of which contains one redo member. When you attempt to start the database, you receive the following errors: ORA-00313: open failed for members of log group 1 of thread 1 ORA-00312: online log 1 thread 1: 'D:/REDO01.LOG' You discover that the online redo log file of the current redo group is corrupted. Which statement should you use to resolve this issue?（）
A.LTER DATABASE DROP LOGFILE GROUP 1; B.LTER DATABASE CLEAR LOGFILE GROUP 1; C.LTER DATABASE CLEAR UNARCHIVED LOGFILE GROUP 1; D.LTER DATABASE DROP LOGFILE MEMBER 'D:/REDO01.LOG
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A programmer needs to create a logging method that can accept an arbitrary number of arguments.Forexample，it may be called in these ways： logIt（"log message 1"）； logIt（"log message 2”，”log message 3"）； logIt（"log message 4"，"log message 5"，"log message 6"）； Which declaration satisfies this requirement（）？
A.public void logIt（String*msgs） B.public void logIt（String[]msgs） C.public void logIt（String...msgs） D.public voidl ogIt（Stringmsg1，Stringmsg2，Stringmsg3）
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log510 — log52=
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所在位置/var/log/2000log目录下，执行cd.后当前位置位于/var/log（）
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在7750SR上参看设备log所有log信息（）
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log510-log52=（）
A.8 B.0 C.1 D.5
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