Running a query on a table returns ORA-600: Internal Error.
Inserting a value in a table returns ORA-01722: invalid number.
Creating a table returns ORA-00955: name is already used by an existing object.
Inserting a value in a table returns ORA-00001: unique constraint (SYS.PK_TECHP) violated.
Rebuilding an index using ALTER INDEX ...REBUILD fails with an error ORA-01578: ORACLE data block corrupted (file # 14, block # 50).
第1题:
You executed the following FLASHBACK TABLE command: FLASHBACK TABLE emp TO TIMESTAMP (’11:45’,’hh12:mi’); Which two statements are correct?()
第2题:
Identify the two situations in which you use the alert log file in your database to check the details.()
第3题:
You discover that your Recycle Bin contains two tables with the same name, MY_TABLE. You also have a table named MY_TABLE in your schema. You execute the following statement: FLASHBACK TABLE my_table TO BEFORE DROP RENAME TO my_table2; What will be the result of executing this statement?()
第4题:
Identify two situations in which the alert log file is updated.()
第5题:
You are building two forms. Each form has a button and a non-base table field. When the button is pressed, a complicated calculation is executed. The calculation is the same for both forms. The calculation code does not query or change the data in the database. When the calculation completes, it returns a single value to the non-base table field. To optimize performance and maintainability, which PL/SQL structure should be used? ()
第6题:
You have altered a non-unique index to be invisible to determine if queries execute within an acceptable response time without using this index. Which two are possible if table updates are performed which affect the invisible index columns?()
第7题:
The FLASHBACK TABLE statement will not be written to the alert log file.
The EMP table that was dropped by mistake from the database will be restored.
The changes made to the EMP table since the specified time will be undone.
The FLASHBACK TABLE statement will not maintain the existing indexes on the EMP table.
The FLASHBACK TABLE statement will be executed within a single transaction.
The list of transactions that have modified the EMP table since the specified time will be displayed.
第8题:
The index remains invisible.
The index is not updated by the DML statements on the indexed table.
The index automatically becomes visible in order to have it updated by DML on the table.
The index becomes unusable but the table is updated by the DML.
The index is updated by the DML on the table.
第9题:
INSTR returns the numeric position of a named character.
NVL2 returns the first non-null expression in the expression list.
TRUNCATE rounds the column, expression, or value to n decimal places.
DECODE translates an expression after comparing it to each search value.
TRIM trims the heading or trailing characters (or both) from a character string.
NVL compares two expressions and returns null if they are equal, or the first expression if they are not equal.
NULLIF compares two expressions and returns null if they are equal, or the first expression if they are not equal.
第10题:
Running a query on a table returns ORA-600: Internal Error.
Inserting a value in a table returns ORA-01722: invalid number.
Creating a table returns ORA-00955: name is already used by an existing object.
Inserting a value in a table returns ORA-00001: unique constraint (SYS.PK_TECHP) violated.
Inserting a row in a table returns ORA-00060: deadlock detected while waiting for resource.
第11题:
Running a query on a table returns ORA-600: Internal Error.
Inserting a value into a table returns ORA-01722: invalid number.
Creating a table returns ORA-00955: name us already in used by an existing objects.
Inserting a value into a table returns ORA-00001: unique constraint (SYS.OK_TECHP) violated.
Rebuilding an index using ALTER INDEX . . . REBUILD fails with an ORA-01578: ORACLE data block corrupted (file # 14, block # 50) error.
第12题:
You can use this feature to identify the committed versions of the rows, but not the uncommitted versions.
You can use this feature to identify the versions of V$ views.
You can use this feature to identify the inserts, deletes, and updates performed on a particular row but not the data definition language (DDL) operations performed on the table.
You can use this feature for a table only if row movement is enabled for the table.
You can use this feature to identify the versions of external and fixed tables.
第13题:
Which syntax turns an existing constraint on?()
第14题:
As a result of performance analysis, you created an index on the prod_name column of the prod_det table, which contains about ten thousand rows. Later, you updated a product name in the table. How does this change affect the index?()
第15题:
Identify the two situations in which the alert log file is updated with details. ()
第16题:
Examine the description of the MARKS table: STD_ID NUMBER(4) STUDENT_NAME VARCHAR2(30) SUBJ1 NUMBER(3) SUBJ2 NUMBER(3) SUBJ1 and SUBJ2 indicate the marks obtained by a student in two subjects. Examine this SELECT statement based on the MARKS table: SELECT subj1+subj2 total_marks, std_id FROM marks WHERE subj1 > AVG(subj1) AND subj2 > AVG(subj2) ORDER BY total_marks; What is the result of the SELECT statement?()
第17题:
Identify the situations in which you use the alert log file in your database to check the detail.()
第18题:
INSTR returns the numeric position of a named character.
NVL2 returns the first non-null expression in the expression list.
TRUNCATE rounds the column, expression, or value to n decimal places.
DECODE translates an expression after comparing it to each search value.
TRIM trims the heading of trailing characters (or both) from a character string.
NVL compares two expressions and returns null if they are equal, or the first expression of they are not equal.
NULLIF compares twp expressions and returns null if they are equal, or the first expression if they are not equal.
第19题:
One of the tables is recovered from the Recycle Bin using a First In First Out (FIFO) approach.
One of the tables is recovered from the Recycle Bin using a Last In First Out (LIFO) approach.
Both the tables are recovered from the Recycle Bin with one table renamed to MY_TABLE2 and the other to a system-generated name.
None of the tables are recovered from the Recycle Bin, and the statement returns an error.
第20题:
Running a query on a table returns ORA-600: Internal Error.
Inserting a value in a table returns ORA-01722: invalid number.
Creating a table returns ORA-00955: name is already used by an existing object.
Inserting a value in a table returns ORA-00001: unique constraint (SYS.PK_TECHP) violated.
Rebuilding an index using ALTER INDEX ...REBUILD fails with an error ORA-01578: ORACLE data block corrupted (file # 14, block # 50).
第21题:
A trigger in each form.
A subprogram in each form.
A stored subprogram in the database.
A subprogram in a library that is attached to each form.
第22题:
Running a query on a table returns ORA-600: Internal Error.
Inserting a value in a table returns ORA-01722: invalid number.
Creating a table returns ORA-00955: name is already used by an existing object.
Inserting a value in a table returns ORA-00001: unique constraint (SYS.PK_TECHP) violated.
Inserting a row in a table returns ORA-00060: deadlock detected while waiting for resource.
第23题:
Exhibit A
Exhibit B
The query returns no rows
The query fails because the outer query is retrieving more than one column
The query fails because both the inner and outer queries are retrieving data from the same table.
第24题:
A leaf will be marked as invalid.
An update in a leaf row takes place.
The index will be updated automatically at commit.
A leaf row in the index will be deleted and inserted.
The index becomes invalid when you make any updates.