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試験番号：1Z0-060問題集試験科目：Upgrade to Oracle Database 12c
最近更新時間：2014-07-09
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試験番号：1Z0-853問題集試験科目：Java Standard Edition 5 Programmer Certified Professional Exam
最近更新時間：2014-07-09
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NO.1 In your database, you want to ensure that idle sessions that are blocking active are
automatically terminated after a specified period of time.
How would you accomplish this?
A. Setting a metric threshold
B. Implementing Database Resource Manager
C. Enabling resumable timeout for user sessions
D. Decreasing the value of the IDLE_TIME resource limit in the default profile
Answer: D
Oracle学校 1Z0-060 1Z0-060入門 1Z0-060問題
Explanation:
An Oracle session is sniped when you set the idle_time parameter to disconnect inactive sessions.
(It's only like sniping on ebay in that a time is set for an action to occur.)
Oracle has several ways to disconnect inactive or idle sessions, both from within SQL*Plus via
resources profiles (connect_time, idle_time), and with the SQL*net expire time parameter. Here are
two ways to disconnect an idle session:
Set the idle_time parameter in the user profile Set the sqlnet.ora parameter expire_time
NO.2 Your database has the SRV1 service configured for an application that runs on middle-tier
application server. The application has multiple modules. You enable tracing at the service level by
executing the following command:
SQL > exec DBMS_MONITOR.SERV_MOD_ACT_TRACE_ENABLE ('SRV1');
The possible outcome and actions to aggregate the trace files are as follows:
1.The command fails because a module name is not specified.
2.A trace file is created for each session that is running the SRV1 service.
3.An aggregated trace file is created for all the sessions that are running the SRV1 service.
NO.3 Your multitenant container database (CDB) contains a pluggable database, HR_PDB. The
default permanent tablespace in HR_PDB is USERDATA. The container database (CDB) is open and
you connect RMAN.
You want to issue the following RMAN command:
RMAN > BACKUP TABLESPACE hr_pdb:userdata; Which task should you perform before issuing the
command?
A. Place the root container in ARHCHIVELOG mode.
B. Take the user data tablespace offline.
C. Place the root container in the nomount stage.
D. Ensure that HR_PDB is open.
Answer: A
Oracle練習問題 1Z0-060合格率 1Z0-060練習問題 1Z0-060
NO.4 The trace files be aggregated by using the tkprof utility.
Identify the correct outcome and the step to aggregate by using tkprof utility?
A. 1
B. 2 and 4
C. 2 and 5
D. 3 and 4
E. 3 and 5
Answer: B
Oracleフリーク 1Z0-060勉強法 1Z0-060過去問 1Z0-060 1Z0-060過去問 1Z0-060虎の巻
Explanation:
Tracing information is present in multiple trace files and you must use the trcsess
tool to collect it into a single file.
Incorrect:
Not 1: Parameter service_name
Name of the service for which tracing is enabled.
module_name
Name of the MODULE. An optional additional qualifier for the service.
Note:
*The procedure enables a trace for a given combination of Service, MODULE and ACTION name. The
specification is strictly hierarchical: Service Name or Service Name/MODULE, or Service Name,
MODULE, and ACTION name must be specified. Omitting a qualifier behaves like a wildcard, so that
not specifying an ACTION means all ACTIONs. Using the ALL_ACTIONS constant achieves the same
purpose.
*SERV_MOD_ACT_TRACE_ENABLE Procedure
This procedure will enable SQL tracing for a given combination of Service Name, MODULE and
ACTION globally unless an instance_name is specified.
*DBMS_MONITOR.SERV_MOD_ACT_TRACE_ENABLE(
service_name IN VARCHAR2,
module_name IN VARCHAR2 DEFAULT ANY_MODULE,
action_name IN VARCHAR2 DEFAULT ANY_ACTION,
waits IN BOOLEAN DEFAULT TRUE,
binds IN BOOLEAN DEFAULT FALSE,
instance_name IN VARCHAR2 DEFAULT NULL);
4. In a recent Automatic Workload Repository (AWR) report for your database, you notice a high
number of buffer busy waits. The database consists of locally managed tablespaces with free list
managed segments.
On further investigation, you find that buffer busy waits is caused by contention on data blocks.
Which option would you consider first to decrease the wait event immediately?
A. Decreasing PCTUSED
B. Decreasing PCTFREE
C. Increasing the number of DBWN process
D. Using Automatic Segment Space Management (ASSM)
E. Increasing db_buffer_cache based on the V$DB_CACHE_ADVICE recommendation
Answer: D
Oracle内容 1Z0-060書籍 1Z0-060学校 1Z0-060フリーク 1Z0-060 vue
Explanation:
* Automatic segment space management (ASSM) is a simpler and more efficient way of managing
space within a segment. It completely eliminates any need to specify and tune the pctused,freelists,
and freelist groups storage parameters for schema objects created in the tablespace. If any of these
attributes are specified, they are ignored.
*Oracle introduced Automatic Segment Storage Management (ASSM) as a replacement for
traditional freelists management which used one-way linked-lists to manage free blocks with tables
and indexes. ASSM is commonly called "bitmap freelists" because that is how Oracle implement the
internal data structures for free block management.
Note:
*Buffer busy waits are most commonly associated with segment header contention onside the data
buffer pool (db_cache_size, etc.).
*The most common remedies for high buffer busy waits include database writer (DBWR) contention
tuning, adding freelists (or ASSM), and adding missing indexes.
5. You executed this command to create a password file:
$ orapwd file = orapworcl entries = 10 ignorecase = N
Which two statements are true about the password file?
A. It will permit the use of uppercase passwords for database users who have been granted the
SYSOPER role.
B. It contains username and passwords of database users who are members of the OSOPER
operating system group.
C. It contains usernames and passwords of database users who are members of the OSDBA
operating system group.
D. It will permit the use of lowercase passwords for database users who have granted the SYSDBA
role.
E. It will not permit the use of mixed case passwords for the database users who have been granted
the SYSDBA role.
Answer: A,D
Oracle体験 1Z0-060認定試験 1Z0-060教育 1Z0-060スクール 1Z0-060過去 1Z0-060
Explanation:
* You can create a password file using the password file creation utility, ORAPWD.
* Adding Users to a Password File
When you grant SYSDBA or SYSOPER privileges to a user, that user's name and privilege information
are added to the password file. If the server does not have an EXCLUSIVE password file (that is, if the
initialization parameter REMOTE_LOGIN_PASSWORDFILE is NONE or SHARED, or the password file is
missing), Oracle Database issues an error if you attempt to grant these privileges.
A user's name remains in the password file only as long as that user has at least one of these two
privileges. If you revoke both of these privileges, Oracle Database removes the user from the
password file.
*The syntax of the ORAPWD command is as follows:
ORAPWD FILE=filename [ENTRIES=numusers] [FORCE={Y|N}] [IGNORECASE={Y|N}]
[NOSYSDBA={Y|N}]
*IGNORECASE If this argument is set to y, passwords are case-insensitive. That is, case is ignored
when comparing the password that the user supplies during login with the password in the
password file.
NO.5 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 stale histogram statistics
B. Undersized shared pool
C. High clustering factor for the indexes
D. High value for the DB_FILE_MULTIBLOCK_READ_COUNT parameter
E. Oversized buffer cache
Answer: A,C,D
Oracle講座 1Z0-060合格率 1Z0-060認定資格
Explanation:
D: DB_FILE_MULTIBLOCK_READ_COUNT is one of the parameters you can use to minimize I/O
during table scans. It specifies the maximum number of blocks read in one I/O operation during a
sequential scan. The total number of I/Os needed to perform a full table scan depends on such
factors as the size of the table, the multiblock read count, and whether parallel execution is being
utilized for the operation.
NO.6 Identify two situations in which the alert log file is updated.
A. Running a query on a table returns ORA-600: Internal Error.
B. Inserting a value into a table returns ORA-01722: invalid number.
C. Creating a table returns ORA-00955: name us already in used by an existing objects.
D. Inserting a value into a table returns ORA-00001: unique constraint (SYS.OK_TECHP) violated.
E. Rebuilding an index using ALTER INDEX . . . REBUILD fails with an ORA-01578: ORACLE data block
corrupted (file # 14, block # 50) error.
Answer: A,E
Oracle 1Z0-060短期 1Z0-060
Explanation:
The alert log is a chronological log of messages and errors, and includes the following items:
*All internal errors (ORA-600), block corruption errors (ORA-1578), and deadlock errors (ORA-60)
that occur
*Administrative operations, such as CREATE, ALTER, and DROP statements and STARTUP ,
SHUTDOWN, and ARCHIVELOG statements
*Messages and errors relating to the functions of shared server and dispatcher processes
*Errors occurring during the automatic refresh of a materialized view
*The values of all initialization parameters that had nondefault values at the time the database and
instance start
Note:
*The alert log file (also referred to as the ALERT.LOG) is a chronological log of messages and errors
written out by an Oracle Database. Typical messages found in this file is: database startup,
shutdown, log switches, space errors, etc. This file should constantly be monitored to detect
unexpected messages and corruptions.
NO.7 You execute the following piece of code with appropriate privileges: User SCOTT has been
granted the CREATE SESSION privilege and the MGR role.
Which two statements are true when a session logged in as SCOTT queries the SAL column in the
view and the table?
A. Data is redacted for the EMP .SAL column only if the SCOTT session does not have the MGR role
set.
B. Data is redacted for EMP .SAL column only if the SCOTT session has the MGR role set.
C. Data is never redacted for the EMP_V.SAL column.
D. Data is redacted for the EMP_V.SAL column only if the SCOTT session has the MGR role set.
E. Data is redacted for the EMP_V.SAL column only if the SCOTT session does not have the MGR role
set.
Answer: A,C
Oracle方法 1Z0-060 1Z0-060会場 1Z0-060番号 1Z0-060認定資格
Explanation:
Note:
*DBMS_REDACT.FULL completely redacts the column data.
*DBMS_REDACT.NONE applies no redaction on the column data. Use this function for development
testing purposes. LOB columns are not supported.
*The DBMS_REDACT package provides an interface to Oracle Data Redaction, which enables you to
mask (redact) data that is returned from queries issued by low-privileged users or an application.
*If you create a view chain (that is, a view based on another view), then the Data Redaction policy
also applies throughout this view chain. The policies remain in effect all of the way up through this
view chain, but if another policy is created for one of these views, then for the columns affected in
the subsequent views, this new policy takes precedence.
NO.8 The trace files may be aggregated by using the trcess utility.
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