单项选择题
You received complaints about the degradation of SQL query performance. You identified top SQL queries that consume time. What would be your next step to find out recommendations about statistics collection and restructuring of the SQL statement to improve query performance？（）
A.run Segment Advisor
B.run SQL Tuning Advisor on top SQL statements
C.run the Automatic Workload Repository （AWR） report
D.run the Automatic Database Diagnostic Monitor （ADDM）on top SQL statements
相关考题
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多项选择题
Whichthreestatementsaretrueaboutthestagesofdatabasestartup？（）
A.Data files and redo log files can be renamed at the MOUNT stage.
B.Control files are read at the OPEN stage for the location of data files.
C.Control files are required to bring the database to the NOMOUNT stage.
D.Data files and redo log files are made available to users at the OPEN stage.
E.Data files and online redo log files are checked for consistency while opening the database -
多项选择题
Whichthreepiecesofinformationareconsideredwhiledecidingthesizeoftheundotablespaceinyourdatabase？（）
A.the size of an undo block
B.the size of the redo log files
C.undo blocks generated per second
D.the size of the database buffer cache
E.the value of the UNDO_RETENTION parameter -
多项选择题
You connected to the database using the following connection string： CONNECT hr/hr@test.us.oracle.com：1521/mydb Which three statements are correct regarding the connection string？（）
A.mydb is a service name.
B.test.us.oracle.com is a database name.
C.1521 is the listener port number.
D.mydb is a host name.
E.test.us.oracle.com is a net service name.
F.hr is a username.
G.test.us.oracle.com is an instance name.
