Reg: result_cache in parallel-
Hi Experts,
I have a few concerns about the result (introduced in 11 GR 2) Cache and the / * + RESULT_CACHE * / suspicion.
Referring to the...
12.1 doc - Tuning the Cache of result
Murali vandenberghe - using Oracle Database 11 g Release 2 result hides in an Oracle RAC environment
Adrian Billington - query result cache in oracle 11g
Door-
(1) assume I have a master ETL job that has 5 sub-jobs. These sub-jobs is run in parallel, which is started at the time of the ETL.
Each of these secondary jobs running a pull request and extracts data from database.
In each of these secondary applications, there is a subquery, which is common. I think to provide / * + RESULT_CACHE * / to this common subquery.
But my real concern - because all queries extraction (i.e. sub-jobs) are started at the same time, the result Cache thing will come into picture?
(2) for how long the data is kept in the cache?
A wild guess - to the point that we execute him DBMS_RESULT_CACHE . FLUSH procedure?
(3) the warnings?
(Trying to fix a few queries time costly and suddenly, this option came to my mind. Took the opportunity to watch this interesting feature, both to understand the put into custody, as appropriate)
Please advise me on this.
-Nordine
(on Oracle 11.2.0.3.0)
Hello.
As requested on LinkedIn, I'll give you my thoughts on the subject.
(1) the content of the result cache is in shared memory, so that they are available to all sessions, including the slaves gave birth to a parallel operation. In fact, it make much sense to do so, since once a specific request is made, all other slaves no longer have to issue this query, they just get the results in the cache.
The result cache everything boils down to reuse. If all the slaves had to run a single statement, then caching of results will help at all. If a statement is reused several times, then caching the result is a great advantage.
(2) it is managed similar to other caches, it is managed by a LRU algorithm. If something needs space, least recently used data is aged to make room. Of course, you can empty it manually, or specific items, but I doubt you would be doing that often.
(3) caching of queries on tables volatile (those whose data change much) is probably useless that the results will be invalidated frequently. The successful result cache dependencies, such as DDL or DML changes to the data can invalidate the results, so that they are not used. You should look at gains fast targets, like small queries regularly issued, whose underlying data do not change on a regular basis. You also have the result of function cache, which is useful for caching the results of the functions, so they do not have to be rerun.
I have some notes on them.
- ORACLE-BASE - query result Cache in Oracle Database 11g Release 1
- ORACLE-BASE-intersessional PL / SQL function result Cache in Oracle Database 11g Release 1
See you soon
Tim...
Tags: Database
Similar Questions
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Hi Experts,
Of the scripts below, the last of them with the parallelism at the level of the tables, the DEGREE of USER_TABLES column becomes 4, and each query is executed with the implicit parallelism.
What is the way to change the DOP to 1 back again?
create table t1
as
Select col1 level 'aaa' col2, sysdate + level double col3 connect by level < = 100;
create table t2
as
Select / * + parallel (4) * / col1, col2 'aaa' level, sysdate + level col3 from dual connect by level < = 100;
create table t3
parallel (level 4)
as
Select / * + parallel (4) * / col1, col2 'aaa' level, sysdate + level col3 from dual connect by level < = 100;
Thank you and best regards,
-Nordine
(on Oracle 10.2.0.1.0)
ALTER TABLE
PARALLEL 1 SQL> create table emp_temp parallel 5 2 as 3 select * from emp; Table created. SQL> select * from table(dbms_xplan.display_cursor); PLAN_TABLE_OUTPUT ------------------------------------------------------------------------------------------------------------------------- SQL_ID 1j21g59116rxv, child number 1 ------------------------------------- create table emp_temp parallel 5 as select * from emp Plan hash value: 91796457 ---------------------------------------------------------------------------------------------------------------- | Id | Operation | Name | Rows | Bytes | Cost (%CPU)| Time | TQ |IN-OUT| PQ Distrib | ---------------------------------------------------------------------------------------------------------------- | 0 | CREATE TABLE STATEMENT | | | | 2 (100)| | | | | | 1 | PX COORDINATOR | | | | | | | | | | 2 | PX SEND QC (RANDOM) | :TQ10000 | 11 | 429 | 2 (0)| 00:00:01 | Q1,00 | P->S | QC (RAND) | | 3 | LOAD AS SELECT | | | | | | Q1,00 | PCWP | | | 4 | PX BLOCK ITERATOR | | 11 | 429 | 2 (0)| 00:00:01 | Q1,00 | PCWC | | |* 5 | TABLE ACCESS FULL | EMP | 11 | 429 | 2 (0)| 00:00:01 | Q1,00 | PCWP | | ---------------------------------------------------------------------------------------------------------------- Predicate Information (identified by operation id): --------------------------------------------------- 5 - access(:Z>=:Z AND :Z<=:Z) 22 rows selected. SQL> select degree from user_tables where table_name = 'EMP_TEMP'; DEGREE ---------- 5 SQL> alter table emp_temp parallel 1; Table altered. SQL> select degree from user_tables where table_name = 'EMP_TEMP'; DEGREE ---------- 1 SQL> -
Hi Experts,
I have a concern about the use of the parallel hint with DOP = 'AUTO '.
These errors during the ETL or tasks are performed with / * + PARALLEL (AUTO) * /.
JOB - 1
java.sql.SQLException: ORA-12853: insufficient memory for buffers PX: run 1159024K, max necessary K 11666304
ORA-04031: unable to allocate 65560 bytes of shared memory ('pool', 'unknown object', 'pool', 'Pool of msg PX')
JOB - 2java.sql.SQLException: ORA-12801: error reported in the P256 parallel query server
ORA-12853: insufficient memory for buffers PX: run 1159024K, max necessary K 11666304
ORA-04031: unable to allocate 65560 bytes of shared memory ('pool', 'unknown object', 'pool', 'Pool of msg PX')I tried google, but could not get a pattern appropriate for that and also correct.
1-do I need to increase the bound parameter buffer?
2 - is this 'AUTO' option the cause? And using a DOP = 3, 4, etc. guaranteed to solve this problem?
(I try this and check but want to know the exact reason, so that it causes no problems in Prod)
Guidance in this regard.
-Nordine
( on Oracle 11.2.0.3.0 )
nordine B wrote:
Before going deep into your words, had a quick question - despite having DOP as 'auto' in the suspicion, why is there an error on the buffers PX?
I was under the assumption that DOP setting on "automatic", the optimizer will take care of all resources and allocate the CPU threads accordingly. But then why this error is growing?
First, I already mentioned in my reply what treat buffers "PX": this is the memory that is required for communication between the servers in PX. Parallel execution comes with the need for a communication between the involved process layer and this layer of communication requires memory for exchanging data (and could even cross the interconnection for CARS cross the parallel execution of the instance). If you want to know more about it, you can watch my Webinar: http://allthingsoracle.com/analyzing-and-troubleshooting-oracle-parallel-execution/
So does not AUTO magic DOP, it is mainly about the following:
-L' optimizer uses a new method of calculation to arrive at a particular degree of parallelism (DOP). The basics, how is the calculation I have described in my post 'Cost Is Time' mentioned in my previous answer. Since this calculation is based on the estimated costs of the optimizer, it can happen to little all - adapted DOP, or may be a completely inappropriate DOP if the calculation of the underlying costs did not reflect the actual amount of work, or if the calibration i/o returned to the unreasonable values.
-In addition to this AUTO DOP code still uses other settings / settings / thresholds which can be used to control / limit the calculated value.
* The PARALLEL_MIN_TIME_THRESHOLD parameter can be used to control which * estimated time * must be exceeded before the parallel execution gets seen by AUTO DOP. Note also that it is based on estimates and therefore underlies the same problems as described above
* The PARALLEL_DEGREE_LIMIT can be used at the upper limit of the degree of "cap".
Currently Manager of used consumer resource group data can impose a different ceiling and will be considered in the calculation, too
-The PARALLEL_SERVERS_TARGET parameter can be used to control the simultaneous execution of running in parallel, resulting in a queue of executions if the threshold is exceeded
-The calibration of i/o resources provides an important factor which is the main engine for the calculation of the DOP
-Resource Manager can be used to implement fairly complex scenarios with different queues and the different settings by Consumer Group
So you can see there are some elements in AUTO DOP that may consider the consumption of resources, especially things of queues and advanced resource manager configurations, but stuff 'Pads PX' does not part of the calculation.
If you want to learn more about these settings and interaction with the resource manager, follow the links on the page "webinar" above - that it points to several very good articles published on the Oracle 'Data Warehouse' blog, a highly recommended resource if you regularly deal with a running in parallel.
Randolf
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Hi Experts,
I have this request below. I was wondering - w/o parallel hint, how you naturally to run in parallel.
Select * from SC
where
There are)
Select 1
STI
where
STC. LNO = sti.lno and
STI.act_id = 1 and
STI.codec in ('2697', '6697', '2737', '6737', '3886', '7886', '2692',' 6692',
'3483 ', '7483', '500', '800', '501', '801' ', 3888',' 7888 ', ' 3887',
"7887 ', '3946', '7946', '3945', '7945' ', 3944',' 7944 ', ' 3953',
"7953 ', '3954', '7954', '3955', '7955' ', 3481',' 3482 ', ' 7481',
"7482 ', '3960', '7960', '4072', '8072' ', 4284',' 8284 ', ' 4343',
"8343 ', '4499', '8499', '10038', '14038' ', 3959',' 11482 ', ' 11483',
"11484 ', '11485', '11486', '11487' ', 11488',' 11489 ', ' 11490',
"11491 ', '11492', '11493', '11494' ', 11495',' 11496 ', ' 11510',
"11560 ', '11561', '11562', '11563' ', 11564',' 11565 ', ' 11566',
"7959 ', '15482', '15483', '15484' ', 15485',' 15486 ', ' 15487',
"15488 ', '15489', '15490', '15491' ', 15492',' 15493 ', ' 15494',
"15495 ', '15496', '15510', '15560' ', 15561',' 15562 ', ' 15563',
"15564 ', '15565', '15566', '11588', '15588',' 12096 ', ' 16096')
);
PLAN_TABLE_OUTPUT
Hash value of plan: 347973291
----------------------------------------------------------------------------------------------------------------------------
| ID | Operation | Name | Lines | Bytes | Cost (% CPU). Time | TQ | IN-OUT | PQ Distrib.
----------------------------------------------------------------------------------------------------------------------------
| 0 | SELECT STATEMENT | | 86 M | 6992M | 2901K (1) | 09:40:22 | | | |
| 1. COORDINATOR OF PX | | | | | | | | |
| 2. PX SEND QC (RANDOM). : TQ10002 | 86 M | 6992M | 2901K (1) | 09:40:22 | Q1, 02 | P > S | QC (RAND) |
|* 3 | HASH JOIN RIGHT SEMI | | 86 M | 6992M | 2901K (1) | 09:40:22 | Q1, 02 | SVCP | |
| 4. RECEIVE PX | | 263K | 4887K | 5456 (14) | 00:01:06 | Q1, 02 | SVCP | |
| 5. PX SEND HASH | : TQ10001 | 263K | 4887K | 5456 (14) | 00:01:06 | Q1, 01 | P > P | HASH |
| 6. ITERATOR BLOCK PX | | 263K | 4887K | 5456 (14) | 00:01:06 | Q1, 01 | ISSUE | |
|* 7 | FULL RESTRICTED INDEX SCAN FAST | STI__IDX | 263K | 4887K | 5456 (14) | 00:01:06 | Q1, 01 | SVCP | |
| 8. KIND OF BUFFER. | | | | | Q1, 02 | ISSUE | |
| 9. RECEIVE PX | | 1087M | 66G | 2891K (1) | 09:38:14 | Q1, 02 | SVCP | |
| 10. PX SEND HASH | : TQ10000 | 1087M | 66G | 2891K (1) | 09:38:14 | | S > P | HASH |
| 11. TABLE ACCESS FULL | STC | 1087M | 66G | 2891K (1) | 09:38:14 | | | |
----------------------------------------------------------------------------------------------------------------------------
Information of predicates (identified by the operation identity card):
---------------------------------------------------
3 - access("STC".") LOANNUMBER "=" STI ". ("' LOANNUMBER")
7 - filter("STI".") ACTIVEIV «= 1 AND ("STI".» Codec "= ' 10038"OR "STI" "codec"="11482' OR
"STI". "codec"= "11483" OR "STI". "codec"= "11484" OR "STI". "codec '=" 11485' OR
"STI". "codec"= "11486" OR "STI". "codec"= "11487" OR "STI". "codec '=" 11488' OR
"STI". "codec"= "11489" OR "STI". ' Codec '= ' 11490 "OR"STI". "codec '=" 11491' OR
"STI". "codec"= "11492" OR "STI". "codec"= "11493" OR "STI". "codec '=" 11494' OR
"STI". "codec"= "11495" OR "STI". "codec"= "11496" OR "STI". "codec" = '11510' OR "
"STI". "codec"= "11560" OR "STI". "codec"= "11561" OR "STI". "codec '=" 11562' OR
"STI". "codec"= "11563" OR "STI". "codec"= "11564" OR "STI". "codec '=" 11565' OR
"STI". "codec"= "11566" OR "STI". "codec"= "11588" OR "STI". "codec '=" 12096' OR
"STI". "codec"= "14038" OR "STI". "codec"= "15482" OR "STI". "codec '=" 15483' OR
"STI". "codec"= "15484" OR "STI". "codec"= "15485" OR "STI". "codec '=" 15486' OR
"STI". "codec"= "15487" OR "STI". "codec"= "15488" OR "STI". "codec '=" 15489' OR
"STI". "codec"= "15490" OR "STI". "codec"= "15491" OR "STI". "codec '=" 15492' OR
"STI". "codec"= "15493" OR "STI". "codec"= "15494" OR "STI". "codec '=" 15495' OR
"STI". "codec"= "15496" OR "STI". "codec"= "15510" OR "STI". "codec '=" 15560' OR
"STI". "codec"= "15561" OR "STI". "codec"= "15562" OR "STI". "codec '=" 15563' OR
"STI". "codec"= "15564" OR "STI". "codec"= "15565" OR "STI". "codec '=" 15566' OR
"STI". "codec"= "15588" OR "STI". "codec"= "16096" OR "STI". "codec"="2692" OR
"STI". "codec"= "2697" OR "STI". "codec"= "2737" OR "STI". "codec '=" 3481' OR
"STI". "codec"= "3482" OR "STI". "codec"= "3483" OR "STI". "codec" = '3886' OR "
"STI". "codec"= "3887" OR "STI". "codec": "3888" OR "STI". "codec '=" 3944' OR
"STI". "codec"= "3945" OR "STI". "codec"= "3946" OR "STI". "codec"="3953" OR "
"STI". "codec"= "3954" OR "STI". "codec"= "3955" OR "STI". "codec '=" 3959' OR
"STI". "codec"= "3960" OR "STI". «Codec ' = ' 4072 "OR"STI".» "codec '=" 4284' OR
"STI". "codec": "4343" OR "STI". "codec"= "4499" OR "STI". "codec"="500" OR "
"STI". "codec"= "501" OR "STI". "codec"= "6692" OR "STI". "codec '=" 6697' OR
"STI". "codec": "6737" OR "STI". "codec"= "7481" OR "STI". "codec '=" 7482' OR
"STI". "codec": "7483" OR "STI". "codec"= "7886" OR "STI". "codec '=" 7887' OR
"STI". "codec": "7888" OR "STI". "codec"= "7944" OR "STI". "codec '=" 7945' OR
"STI". "codec"= "7946" OR "STI". "codec"= "7953" OR "STI". "codec '=" 7954' OR
"STI". "codec"=, "7955" OR "STI". "codec"= "7959" OR "STI". "codec '=" 7960' OR
"STI". "codec"= "800" OR "STI". ' Codec '= ' 801 "OR"STI". "codec '=" 8072' OR
(("STI"."codec"= "8284" OR "STI"."codec"= "8343" OR "STI"."codec"="8499'))What could be the possible reason?
No matter what level setting of session as "ENABLE PARALLEL" or something.
Please tell us in this regard.
Thank you and best regards,
-Nordine
(on Oracle 11.2.0.3.0)
nordine B wrote:
Thanks Hoek. Learned something new.
BTW, I checked the DOF in this table and there is no PARALLELism present.
Any other pointer why this could happen?
You have probably checked the parallelism of the * index * STI__IDX - that's probably the problem no. 1 with reconstructions of index in parallel to speed up the reconstruction process and oblivion reset the level again to 1. This change in 12 c, incidentally, where reconstructions of index and table move is no longer change / persist the degree of the operation in the dictionary of the object reconstruction / moved.
Randolf
-
Brother printer driver hl-1230 parallel not recognised in Windows 7 Professional 32 bit.
Brother printer driver hl-1230 parallel not recognised in Windows 7 Professional 32 bit. It is supported by MS and brother informed me to contact MS support, but of course MS wants MORE money for support.
How can I get this printer working?
* I have updated the list of printers supported in adding/Printing Assistant
* printers only like mine is HL-1240 and HL-1250. I installed them, but it did not work. Only the white pages are out.
* I went to Windows Update, and was the only one available update for Windows Defender
* I have not tried all of the Vista drivers for this printer, because I don't think I would have, if MS wrote W7 is pressed it.[http://www.microsoft.com/windows/compatibility/windows-7/en-us/Details.aspx?type=Hardware&p=Brother%20HL-1230%20Laser%20Printer&v=Brother&uid=HL-1230ZU1&pf=0&pi=0&s=brother%20hl-1230&os=32-bit]
Brother written all Brother print drivers included in the operating system as well as those on Windows Update.
Have you already installed the drivers from Vista 5/2007 for this device since the Brother's Web site?
I'll send the mail for the Brother printer driver testers who are in Redmond and confirm which driver what they recommend for the device. I do expect a response until after Jan. 4.
Alan Morris Windows printing team; Here Microsoft Knowledge Base search: http://support.microsoft.com/search/Default.aspx?adv=1
-
Latch free waits with the parallel execution
Hello
I have a table in a DB 11.1.0.7 with millions of lines I need of aggregation after a search on each line operation. The operation consisted in the determination of a small, constant lookup table the highest value that is less than a column. So I have this array of so-called transation, with some traits of hundreds:
and a small function that gets the value of your choice (after an additional mapping):CREATE TABLE ref_trad ( entry varchar2(50) PRIMARY KEY, id integer NOT NULL );
Now when I try to aggregate the table using parallelism, I get a lot of waits 'latch free '. With 4 parallel sessions for example, looking at the graphs in 'EM, I get about 2.5 sessions on CPU and 1.5 on waiting 'latch free '. I have the impression of reading around that the wait could be due to a hot block in index table of ref_trad or something similar. I tried several things, such as the use of the tables of index_organized or the partitioning of the tiny table_reference, hoping to get more parallelism, without spectacular results. So my questions to those who know it are the following:CREATE OR REPLACE FUNCTION translate_num(num IN varchar2) RETURN integer RESULT_CACHE RELIES_ON (ref_block) AS nm_id integer; BEGIN SELECT m.number_id INTO nm_id FROM ref_number_map m INNER JOIN ref_trad t ON (m.block_id = t.id) WHERE t.entry = (SELECT max(entry) FROM ref_trad WHERE entry <= num); RETURN nm_id; EXCEPTION WHEN NO_DATA_FOUND THEN RETURN 0; END;
-How to determine with precision the cause for waiting latch_free events? (e.g., the hot block, the piece of PL/SQL code, etc.)
Is there some sort of mode of implementation of a standard and efficient lookup table? (I've heard on the loading table in a PL/SQL table, would it be useful? No matter what pointer on how to do this? )
-Why should there be contention in the first place in this case, because all the search logic is read-only?
Thanks for all your help!
ChrisHi Chris,
-How to determine with precision the cause for waiting latch_free events? (e.g., the hot block, the piece of PL/SQL code, etc.)
Trace your SQL, search slaves PX trace files, look for the settings for event wait - and you here. Another option is to use one of the scripts of Tanel Poder - waitprof.
Is there some sort of mode of implementation of a standard and efficient lookup table? (I've heard on the loading table in a PL/SQL table, would it be useful? No matter what pointer on how to do this? )
Not sure about a 'standard', but it's a good thing at least do a table index.
-Why should there be contention in the first place in this case, because all the search logic is read-only?
Since Oracle should have the means of access of sinchronizing to a shared structures - LMS - since they are used simultaneously by several processes.
A good thing to make your faster SQL is to get rid of PL/SQL - it's not a good thing to use SQL [even with RESULT_CACHE | http://www.pythian.com/news/598/oracle-11g-query-result-cache-rc-latches]. Write your logic in a single pure SQL, it might be very beneficial even without special setting.
-
On macOS Sierra - Parallels Desktop 12 - error unable to load Parallels driver - error ID 352
I have updated at 10.12 some weeks ago, with no problems.
I used 10 Parallels and put Windows 7 access every day. My Mac software was 100% up-to-date.
After a few weeks, I started Windows and Parallels showed the error "Failed to load the driver" and KB Parallels, I found that I may need to upgrade. As I was planning to upgrade anyway, I upgraded to Parallels 12 and got the same error.
I contacted Parallels support - they responded with this:
Failed to load Parallels driver. Problem ID: 352
Cause
The problem is in the bundle /System/Library/Extensions/IOPCIFamily.kext from Apple. In the bundle's info.plist is damaged due to some reasons.
Resolution
If please contact Apple Support team and send them system.log and corrupt /System/Library/Extensions/IOPCIFamily.kext/Info.plist.
The person wrote that if Apple can't help, we will try to help "."
Is anyone able to help please?
Thank you.
It is a user to user forum, not a team of Apple Support forum. In any event, it sounds like a problem of Parallels as it is unlikely that multiple versions of the operating system have defective or damaged kernel extensions.
For what it's worth, I use Parallels 11 without problem on macOS Sierra to access Windows 2000, Windows XP, Windows XP64, Windows 7 and Windows 10 of virtual machines. I think you should go back to parallels Support. I've avoided Parallels 12 because of all the problems users are reporting
-
What version of Windows works better with Parallels 12?
I just bought 12 Parallels for my iMac to use Quickbooks Pro (I was told that the Quickbooks for Mac version had limited functionality). Certainly, I don't want Windows 10, but am looking for advice on what other Windows version recommend power of Parallels for any user.
Parallels only works on Mac > https://www.parallels.com/landingpage/pd/general/?gclid=CP6025_95M4CFc-Cfgode30A Pg
-
I use Parallels to Quicken and QuickBook to ensure the continuity of my biz and personal finance since I got my Mac about 5-6 years ago. It's a pain - especially for my accountant, coming 2 X / month. I am considering getting a machine of small cheap windows just for her, (and when I need to do bills or check my investments).
What do you think of this vs go to Bootcamp, I've just heard? The problems are that Parallels is running very slowly, has been difficult to save, (although I think I'm OK now), something seems to be problematic to 50% of the time. Just generally irritating. Opinions? THX so much.
Running Windows using Boot Camp allows Windows to run better than under Windows in Parallels because Windows uses them your computer resources. When running Windows Parallels is the sharing of the resources of your computer with OSX. Then goes to Boot Camp will result in Windows and the programs of superior performance.
If you encounter problems with Windows in Parallels 50% of the time, you probably have something misconfigured or there is something wrong with your installed programs.
That said, in a professional environment I would eliminate potential problems while getting a cheap Windows computer to run the programs only my windows. This would allow me to continue working on my Apple computer while someone else is using Windows programs. It would be easier to maintain backups for both systems.
-
Update to OSX. Questions about Parallels
I'm about to upgrade to OSX El Capitan of 10.6.8. (I know it's time)
My question (s)?
1.) Will the 9 of Parallels Desktop for Mac (v. 9.0.2451) running on OSX?
I use Parallels to run Windows 8.1, which I use to run Quicken Home and Business 2015 R 11 (24.1.11.1).
So I guess that if Parallels 9 is compatible, then windows and Quicken will be as well?
2.) I am also under Office 2008 for Mac - which I suppose will not work after the upgrade? Does anyone have any experience with Office for Mac OSX.
Thanks for any idea or information, on what you can spend.
Nope, both (maybe) need of updates. Corresponds at least to version 10, but instead of 11. Office 2008 might still work, but the reports vary; 2011 version works very well for me.
-
With the help of Parallels and Windows OS
When running Parallels do I also need to install an operating system Windows on my Mac or Parallels come with him so I can run a windows application?
You need to install windows inside parallels. If you need a valid license of windows.
-
I can't connect to shared network computers. Not a problem already before the update to OS X El Capitan. The computers appear in the Finder under heading Shared, but when I try to connect it says connection failed. However, under Parallels Windows 7 I can properly connect via the shortcut or mapped drive. Any suggestions?
El Capitan is a bit fussy about safety. Try
Finder > go > connect to server...
and enter the address of the server explicitly in the dialog box that appears.
C.
-
my PC Backup, Reg Clean Pro & Research protect ALL grafted onto my Installer Firefox 26, for which I had to replace my Norton caveat regarding security issues.
Based on your research, I also substitute a Norton Security warning.
I have windows 7 and complete Norton Security
You downloaded firefox from the official site. Sometimes the software gets supplied with malware or adware, as in your case.
In some cases, I recommend uninstalling (your software also mentioned), FF data directory deleting and then reinstalling FF of mozilla.org -
Increase the maximum number of connections more parallel connections
Fire Fox: HTTP max connections
value is currently at the lowestInternet pages are sent via the HTTP protocol
According to the Protocol - maximum number of parallel connections to the same server.Increase the number of connection max.
How - can not find an answer - I can learn
Thank you
Note that it is not polite to take too many connections to the servers one and this can cause you to be banned by the administrator, so to be restrictive by increasing network.http prefs as Network.http.Max - connections-per-server.
-
Hello
I just bought a new Mac Book Pro 13 "Retina Display. I intend to use Windows 10 on my mac book as well. For the most part, I'll use windows for commercial purposes like MS Office, email, photoshop, navigation and sometimes I could use it for the basic games.
I'm stuck between Bootcamp and parallels. Parallels seems more user-friendly, attributes of parallels seems as easy as switching between two systems also things I want to do it on Windows could not push the memory and device allows to execute in good performance. However I still have concerns about the Parallels because of performance issues I've read so far. Since its running the two systems at the same time, it could reduce the performance of the laptop. I would get the best performance and the face with minimal breakdowns of the system that I use.
Also, I read a lot of articles that says that boot camp is best in performance wise but I couldn't make the decision for my case and my features. I need suggestions from other users who are more experienced with Mac in order to make a decision between them.
Plug from my laptop.
-3.1 GHz Intel Core i7
-GB 16, 1867 MHz DDR3
-512 GB of Flash storage
Thank you
Perhaps you are not aware of this, but OS X comes with e-mail software. MS Office is available for OS X, just like most of the products like Photoshop Adobe. OS X also comes with its own browser. My question is why you must use Windows to run programs that you run on OS X without using Windows?
Although Boot Camp is slightly faster with Windows and Parallels, but unless the speed is essential Parallels is much easier to use provided that you have sufficient memory to run two operating systems simultaneously.
Maybe you are looking for
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Satellite A210 - what cooler Zalman can you recommend?
HelloI have Toshiba Satellite A210-16F and I am looking for a Zalman cooler. Which is more appropriate for my NB?Zalman NC - 1000 Notebook cooler,Zalman ZM - NC1500 Notebook cooler, orLaptop computer cooler Zalman NC-2000? Thank you.
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I generally try to help out here, but I need help or comments on this one I have my Xoom screen timeout to 2 minutes and always on when it is connected because I love him now and bright on my desk at work when it is docked. the problem is that the sc
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Please I need the answer as soon as possible because I don't know what is this problem with ease? Thank you very much for the help.
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Windows DEFENDER does not scan every day as expected in Windows XP
Running XP: Windows Defender is configured to run a scan of all day at 0400. The scan is not the case. Should what status I put the PC in a end of day to do this at 0400?
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How can I find the manual for this computer? I can't believe that it is not available on the HP site!