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Q1. You notice a high number of waits for the db file scattered read and db file sequential read events in the recent Automatic Database Diagnostic Monitor (ADDM) report. After further investigation, you find that queries are performing too many full table scans and indexes are not being used even though the filter columns are indexed. Identify three possible reasons for this. A. Missing or sta
Q1. You create a table with the PERIOD FOR clause to enable the use of the Temporal Validity feature of Oracle Database 12c. Examine the table definition: Which three statements are true concerning the use of the Valid Time Temporal feature for the EMPLOYEES table? A. The valid time columns employee_time_start and employee_time_end are automatically created. B. The same statement may filter o
Q1. A senior DBA asked you to execute the following command to improve performance: SQL> ALTER TABLE subscribe log STORAGE (BUFFER_POOL recycle); You checked the data in the SUBSCRIBE_LOG table and found that it is a large table containing one million rows. What could be a reason for this recommendation? A. The keep pool is not configured. B. Automatic Workarea Management is not configur
Q1. You execute the commands: SQL>CREATE USER sidney IDENTIFIED BY out_standing1 DEFAULT TABLESPACE users QUOTA 10M ON users TEMPORARY TABLESPACE temp ACCOUNT UNLOCK; SQL> GRANT CREATE SESSION TO Sidney; Which two statements are true? A. The create user command fails if any role with the name Sidney exists in the database. B. The user sidney can connect to the database instance bu
Q1. Which three statements are true when the listener handles connection requests to an Oracle 12c database instance with multithreaded architecture enabled In UNIX? A. Thread creation must be routed through a dispatcher process B. The local listener may spawn a now process and have that new process create a thread C. Each Oracle process runs an SCMN thread. D. Each multithreaded Oracle proce
Q1. You use a recovery catalog for maintaining your database backups. You execute the following command: $rman TARGET / CATALOG rman / cat@catdb RMAN > BACKUP VALIDATE DATABASE ARCHIVELOG ALL; Which two statements are true? A. Corrupted blocks, if any, are repaired. B. Checks are performed for physical corruptions. C. Checks are performed for logical corruptions. D. Checks are performed
Q1. Your multitenant container (CDB) contains two pluggable databases (PDB), HR_PDB and ACCOUNTS_PDB, both of which use the CDB tablespace. The temp file is called temp01.tmp. A user issues a query on a table on one of the PDBs and receives the following error: ERROR at line 1: ORA-01565: error in identifying file ‘/u01/app/oracle/oradata/CDB1/temp01.tmp’ ORA-27037: unable to obtain file
Q1. On your Oracle Database, you issue the following commands to create indexes: SQL > CREATE INDEX oe.ord_customer_ix1 ON oe.orders (customer_id, sales_rep_id) INVISIBLE; SQL> CREATE BITMAP INDEX oe.ord_customer_ix2 ON oe.orders (customer_id, sales_rep_id); Which two statements are true? A. Only the ORD_CUSTOMER_IX1 index created. B. Both the indexes are updated when a row is inserted
Q1. Which two statements are true about the use of the procedures listed in the v$sysaux_occupants.move_procedure column? A. The procedure may be used for some components to relocate component data to the SYSAUX tablespace from its current tablespace. B. The procedure may be used for some components to relocate component data from the SYSAUX tablespace to another tablespace. C. All the compone
Q1. The user SCOTT owns the CUST table that is placed in the SALES tablespace. The user SCOTT opens a session and executes commands as follows: SQL> INSERT INTO cust VALUES(101, 'JACK'); 1 row created. SQL> INSERT INTO cust VALUES(102, 'SMITH'); 1 row created. As a DBA, you execute the following command from another session: ALTER TABLESPACE sales READ ONLY; Which sta