Examine the following command; ALTER SYSTEM SET enable_ddl_logging = TRUE; Which statement is true?（） [" Only the data definition language (DDL) commands that resulted in errors are logged in the alert log file."," All DDL commands are logged in the alert log file."," All DDL commands are logged in a different log file that contains DDL statements and their execution dates."," Only DDL commands that resulted in the creation of new segments are logged."," All DDL commands are logged in XML format in the alert directory under the Automatic Diagnostic Repository (ADR) home."]
交流电力线在离基站位置（）m处通过埋地引入基站配电箱中。 ["10","20","30","50"]
Given: Which code, inserted at line 15, allows the class Sprite to compile?（） ["Foo { public int bar() { return 1; }","new Foo { public int bar() { return 1; }","new Foo() { public int bar() { return 1; }","new class Foo { public int bar() { return 1; }"]
加密密钥位长的最低要求是（） ["40位","56位","128位","256位"]
Your production database is running in the ARCHIVELOG mode and the ARCn process is functional. You have two online redo log groups. Which three background processes would be involved when a log switch happens？（） [" log writer"," archival"," process monitor"," system monitor"," change tracking writer"," database writer"]
防噪音类
