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Evaluate these statements:
CREATE TABLE purchase_orders
(po_idNUMBER(4),
po_dateTIMESTAMP,
supplier_idNUM8ER(6),
po_totalNUMBER(8,2), CONSTRAINT order_pk PRIMARY KEY(po_id))
PARTITION BY RANGE(po_date)
(PARTITIONQ1 VALUES LESS THAN (TO_DATE('01-apr-2007','dd-mm-yyyy')), PARTITIONQ2VALUESLESSTHAN(TO_DATE('01-jul-2007','dd-mm-yyyy')), PARTITIONQ3VALUESLESSTHAN (TO~DATE('01-oct-2007','dd-mm-yyyy')), PARTITIONQ4VALUESLESSTHAN (TO_DATE('Ol-jan-2008','dd-mm-yyyy')));
CREATE TABLE purchase_order_items
(po_idNUM3ER(4)NOT NULL,
product_idNUMBER(6)NOT NULL,
unit_price NUMBER(8,2),
quantity NUMBER(8),
CONSTRAINT po_items_f k
FOREIGN KEY(po_id)REFERENCES purchase_orders(po_id))
PARTITION BY REFERENCE(po_items_fk);
Which two statements are true? (Choose two.)
You regularly take backups of your database using RMAN with a recovery catalog. Your database is currently open and the temp01.dbf temp file belonging to the TEMP tablespace is corrupted.
Identify two methods to recover the temp file with the least disruption to database availability. (Choose two.)
Temp files are a special class of data files that are associated only with temporary tablespaces.
B: After restore and recovery of a whole database, when the database is open, missing temporary tablespaces that were recorded in the control file are re-created with their previous creation size, AUTOEXTEND, and MAXSIZE attributes. Only temporary tablespaces that are missing are re-created. If a temp file exists at the location recorded in the RMAN repository but has an invalid header, then RMAN does not re-create the temp file.
If the temp files were created as Oracle-managed files, then they are re-created in the current DB_CREATE_FILE_DEST location. Otherwise, they are re-created at their previous locations.
C: If a data file becomes missing or corrupted. You must take it offline before you can open the database.
References:
https://docs.oracle.com/database/121/ADMIN/dfiles.htm
https://docs.oracle.com/database/121/BRADV/rcmcomre.htm
You notice performance degradation in your production Oracle 12c database. You want to know what caused this performance difference.
Which method or feature should you use?
For which three pieces of information can you use the RMAN LIST command? (Choose three.)
Which three conditions must be met before you Virtual Private Catalog (VPC) can be created and used by an Administrator? (Choose three.)
