Must we give up Linux because of the asynchronous IO?
Versions of RDBMS: 10.2.0.5, 11.2.0.3Current platform: AIX 6
To reduce costs, we intend to spend half of our DB of AIX servers to Oracle Enterprise Linux 6 (UEK) and rest to Solaris 11. Already in negotiation with Oracle on pricing.
One of our managers (a big fan of IBM) complains that Linux is bad in asynchronous i/o. He asked us to google just Linux and AIO. Things like the following came.
http://bouliiii.blogspot.com/2011/10/disk-asynchronous-IO-mess-on-Linux-and.html
Basically, that's what I understand about asynchronous i/o. A process may issue several requests of writing for the Linux/Unix kernel and continue to do other things, and in the meantime, the kernel will perform all your queries IO in the disks and inform you that all your applications have been made. It is parallel processing with respect to the i/o. Am I right?
I wonder what Mr. StallMan and Mr. Torvalds think about these allegations?
BTW. Any idea what is the meaning of the term "Sub" in IO subsystem? What is so "Sub" to this topic?
Tim_36 wrote:
Can we use Oracle Enterprise Linux v6 for our implementations of CARS?
The earth around the Sun?
Oracle database machine broke many records of database performance. There are very few other RDBMS suppliers who compare the scalability and performance of ito.
Machine database Oracle Exadata (nodes of storage server), run the Linux command. No AIX.
They also use Infiniband. No Gigabyte Ethernet.
Tangible evidence of what real h/w uses in the real world to deal with the actual data - very fast and very scalable.
Evidence that the 'management' and 'architecture' fail to see and understand.
My largest database (12 node RAC) addresses on a raw lines 100 billion per month - about 40 000 inserts/s, 24 hours a day, 7 days a week and 365 days a year. It does this by using Linux as an operating system.
Only a fool of first class will question the ability of Linux as an operating system for the RDBMS to Oracle and Oracle RAC. Feel free to send this word for Word to your manager "IBM/AIX...
Tags: Database
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< mx:columns >
< mx:DataGridColumn id = "idCol" dataField = "id" headerText = "ID" draggable = "false" / >
< mx:DataGridColumn id = "first name" dataField = "first name" headerText = "First" draggable = "false" / >
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I DO NOT see the server call to "getEmployees" hit-it left me speechless. How can he try to make DataGridColumNested before she even finished loading the employees? Because of the asynchronous call to the remote object? If so, what is the best way to ensure that the grid is not even try to load until it has 'really' data?
Thank you
Simply do as the custom DataGridColumn is
incorrect implementation. The overridden method itemToLabel must manage
"data == null' free as a result of the base class."
In addition, it is interesting to note that the DataGridColumn in version 3.4 of the
Development Kit software supports nested properties, and the code seems to be more
more effective than the solution you use.
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package
{
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spark.yVelocity = - 1;function updateSpark(event:Event):void
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Thank you
Scott
Yes, 'var '.
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MA: termination litigation because of the error 472
Hi all
Today our database crashed with error in the alert running on linux 4.6 log db below: 10.2.0.3.0 (32 bit)
Filled checkpoint up to RBA [0x1730.2.10], RCS: 5979396038739
Sea may 28 08:56:31 2014
Errors in the /oracle/clndb/10.2.0/admin/PROD_damacdb/udump/TESTcln_ora_6562.trc file:
[ORA-07445: exception encountered: core dump [kokcup () + 97] [SIGSEGV] [address not mapped to object] [0xC000095D] []]
Sea may 28 08:56:32 2014
Errors in the /oracle/clndb/10.2.0/admin/PROD_damacdb/udump/TESTcln_ora_6562.trc file:
[ORA-07445: exception encountered: core dump [kghssgmm () + 83] [SIGFPE] [integer division by zero] [0xAD03465] []]
[ORA-07445: exception encountered: core dump [kokcup () + 97] [SIGSEGV] [address not mapped to object] [0xC000095D] []]
Sea may 28 08:59:55 2014
Beginning log switch checkpoint up to RBA [0x1731.2.10], RCS: 5979396047597
Thread 1 Advanced for you connect to sequence 5937
Currently Journal # 2 seq # 5937 mem # 0: /d02/clndata/log02a.dbf
Currently Journal # 2 seq # 5937 mem # 1: /d02/clndata/log02b.dbf
Sea may 28 09:02:25 2014
Errors in the /oracle/clndb/10.2.0/admin/PROD_damacdb/udump/TESTcln_ora_2032.trc file:
[ORA-07445: exception encountered: core dump [kghupr_flg () + 551] [SIGSEGV] [address not mapped to object] [0x10] []]
Sea may 28 09:02:49 2014
Errors in the /oracle/clndb/10.2.0/admin/PROD_damacdb/bdump/TESTcln_pmon_23066.trc file:
[ORA-07445: exception encountered: core dump [kghupr_flg () + 551] [SIGSEGV] [address not mapped to object] [0x10] []]
Sea may 28 09:02:54 2014
MA: termination litigation because of the error 472
Instance terminated by MA, pid = 23070
Sea may 28 09:08:01, 2014
Starting ORACLE instance (normal)
Sea may 28 09:08:01, 2014
Db_block_buffers parameter system activated without VLM on.
LICENSE_MAX_SESSION = 0
LICENSE_SESSIONS_WARNING = 0
Diagram of SNA picked latch-free 2
With the help of LOG_ARCHIVE_DEST_1 parameter value by default as /oracle/clndb/10.2.0/dbs/arch
Autotune undo retention is enabled.
IMODE = BR
ILAT = 220
LICENSE_MAX_USERS = 0
SYS audit is enabled
ksdpec: called to the event 13740 before initialization of the event group
Commissioning ORACLE RDBMS Version: 10.2.0.3.0.
Parameters of the system with default values:
_trace_files_public = FALSE
process = 1000
sessions = 2000
TIMED_STATISTICS = TRUE
resource_limit = TRUE
shared_pool_size = 838860800
STREAMS_POOL_SIZE = 50331648
SHARED_POOL_RESERVED_SIZE = 83886080
nls_language = American
nls_territory = America
nls_sort = binary
NLS_DATE_FORMAT = DD-MON-RR
nls_numeric_characters =.,.
nls_comp = binary
nls_length_semantics = BYTE
resource_manager_plan = INTERNAL_PLAN
control_files = d02/clndata/cntrl01.dbf, d02/clndata/cntrl02.dbf, /d02/clndata/cntrl03.dbf
db_block_buffers = 150000
db_block_checksum = TRUE
DB_BLOCK_SIZE = 8192
compatible = 10.2.0
log_buffer = 15276032
log_checkpoint_interval = 100000
log_checkpoint_timeout = 1200
DB_FILES = 550
db_file_multiblock_read_count = 8
log_checkpoints_to_alert = TRUE
dml_locks = 10000
UNDO_MANAGEMENT = AUTO
undo_tablespace = APPS_UNDOTS1
UNDO_RETENTION = 7200
db_block_checking = FALSE
O7_DICTIONARY_ACCESSIBILITY = FALSE
Remote_login_passwordfile = NONE
audit_sys_operations = TRUE
session_cached_cursors = 1200
UTL_FILE_DIR = / usr/tmp, /oracle/clndb/10.2.0/appsutil/outbound/PROD_damacdb
plsql_code_type = INTERPRETED
plsql_optimize_level = 2
JOB_QUEUE_PROCESSES = 2
_system_trig_enabled = TRUE
CURSOR_SHARING = TRUE
parallel_min_servers = 0
PARALLEL_MAX_SERVERS = 8
background_dump_dest = /oracle/clndb/10.2.0/admin/PROD_damacdb/bdump
user_dump_dest = /oracle/clndb/10.2.0/admin/PROD_damacdb/udump
max_dump_file_size = 20480
core_dump_dest = /oracle/clndb/10.2.0/admin/PROD_damacdb/cdump
session_max_open_files = 20
db_name = TESTCLN
open_cursors = 1500
os_authent_prefix =
_sort_elimination_cost_ratio = 5
sql92_security = TRUE
_b_tree_bitmap_plans = FALSE
_fast_full_scan_enabled = FALSE
_sqlexec_progression_cost = 2147483647
_like_with_bind_as_equality = TRUE
pga_aggregate_target = 4194304000
workarea_size_policy = AUTO
aq_tm_processes = 1
PMON started with pid = 2, OS id = 4457
PSP0 started with pid = 3, OS id = 4459
MA started with pid = 4, OS id = 4461
DBW0 started with pid = 5, OS id = 4464
LGWR started with pid = 6, OS id = 4466
CKPT started with pid = 7, OS id = 4468
SMON started with pid = 8, OS id = 4470
RECCE has started with pid = 9, OS id = 4472
CJQ0 started with pid = 10, OS id = 4474
MMON started with pid = 11, OS id = 4476
MMNL started with pid = 12, OS id = 4478
Sea may 28 09:08:03 2014
ALTER DATABASE MOUNT
Sea may 28 09:08:07 2014
Definition of embodiment of recovery target 2
Sea may 28 09:08:07 2014
Mount of redo thread 1, with mount id 3266286451
Sea may 28 09:08:07 2014
Database mounted in exclusive Mode
Completed: ALTER DATABASE MOUNT
Sea may 28 09:08:07 2014
ALTER DATABASE OPEN
Sea may 28 09:08:08 2014
Beginning of thread 1 crash recovery
parallel recovery started with 3 process
Sea may 28 09:08:09 2014
Scan again started
Sea may 28 09:08:09 2014
Complete scan again
5831 redo blocks, blocks of 402 data need recovery reading
Sea may 28 09:08:09 2014
Request for reinstatement has started
Thread 1: logseq 5936, block 8590
Sea may 28 09:08:09 2014
Online Redo Log recovery: thread 1 mem Group 1 Seq 5936 reading 0
Mem # 0: /d02/clndata/log01a.dbf
MEM # 1: /d02/clndata/log01b.dbf
Sea may 28 09:08:10 2014
Online Redo Log recovery: thread 1 mem Group 2 Seq 5937 reading 0
Mem # 0: /d02/clndata/log02a.dbf
MEM # 1: /d02/clndata/log02b.dbf
Sea may 28 09:08:10 2014
Completed request
Sea may 28 09:08:10 2014
Finished in crash recovery
Thread 1: logseq 5937, block 4026, RCS 5979396068960
402 data blocks read, 387 written data blocks, 5831 redo blocks read
Sea may 28 09:08:11 2014
Thread 1 Advanced for you connect to sequence 5938
Thread 1 is open to the sequence of journal 5938
Currently journal # 1, seq # 5938 mem # 0: /d02/clndata/log01a.dbf
Currently journal # 1, seq # 5938 mem # 1: /d02/clndata/log01b.dbf
Opening of redo thread 1
Sea may 28 09:08:11 2014
View MTTR is disabled, because FAST_START_MTTR_TARGET is not defined
Sea may 28 09:08:11 2014
Additional checkpoint up to RBA to RBA [0x1732.3.0] [0x1732.3.0], current journal line
Sea may 28 09:08:13 2014
Successfully onlined Undo Tablespace 368.
Sea may 28 09:08:13 2014
SMON: enabling the recovery of tx
Sea may 28 09:08:13 2014
Database charset is UTF8
off replication_dependency_tracking (no replication multimaster async found)
From QMNC background process
QMNC started with pid = 17, OS id = 4490
Sea may 28 09:09:16 2014
Completed: ALTER DATABASE OPEN
Trace file
/Oracle/clndb/10.2.0/Admin/PROD_damacdb/udump/TESTcln_ora_6562.TRC
Oracle Database 10 g Enterprise Edition release 10.2.0.3.0 - Production
With partitioning, OLAP and Data Mining options
ORACLE_HOME = /oracle/clndb/10.2.0
Name of the system: Linux
Name of the node: TESTclonedb.damacerp.com
News Release: 2.6.9 - 67.ELsmp
Version: #1 SMP Wed Nov 7 13:58:04 UTC 2007
Machine: i686
Instance name: TESTCLN
Redo thread mounted by this instance: 1
Oracle process number: 317
Unix process pid: 6562, image: [email protected]
2014-05-28 08:56:31.820
ACTION NAME: (9287) 2014-05-28 08:56:31.696
MODULE NAME:(xdo.oa.template.server.TemplatesAM:R) 2014-05-28 08:56:31.696
SERVICE NAME: (TESTCLN) 2014-05-28 08:56:31.696
SESSION ID: (1783.20135) 2014-05-28 08:56:31.696
Exception signal: 11 (SIGSEGV), code: 1 (address not mapped to the object), ADR: 0xc000095d PC: [0x98b338b, kokcup () + 97]
Records:
EAX: 0x00000000 ebx %: 0x794034b4% ecx: 0x794034b4
% edx: 0xc0000929% edi: esi % 0x0cd3a9e0: 0xb72da9e8
% esp: 0xbfffb9dc % ebp: eip % 0xbfffb9e8: 0x098b338b
% efl: 0 x 00210246
kokcup () + 86 (0x98b3380) mov 0 x 24 (% ebx), % edx
kokcup () + 89 testb (0x98b3383) 0 x $1, % dl
kokcup () + 94 (0x98b3388) mov 0 x 18 (% ebx), % edx
> kokcup () + 97 (0x98b338b) movzw 0 x 34 (% edx), % edx
kokcup () + 101 (0x98b338f) test % edx, % edx
kokcup () + 103 (0x98b3391) I 0x98b33a8
kokcup () + 105 (0x98b3393) cmp $0xffff, % edx
kokcup () + 111 (0x98b3399) jge 0x98b33a8
2014-05-28 08:56:31.832
ksedmp: internal or fatal error
[ORA-07445: exception encountered: core dump [kokcup () + 97] [SIGSEGV] [address not mapped to object] [0xC000095D] []]
-Call trace stack memory-
call call entered the argument values in hex
location point type (? means dubious value)
-------------------- -------- -------------------- ----------------------------
ksedst () + 27 call ksedst1() 1? 1?
ksedmp () + 557 call ksedst() 1? 8168F10? B748BF3C?
B80650? 10? B7491A90?
ssexhd () + 882 call ksedmp() 3? 98B338B? 636B6F6B?
29287075? 37392B? 0?
kokcup () + 97 00000000 B signal? B748DC90? B748DD10?
kocdsfr () + 460 call 00000000 CD3A9E0? B72DA9E8? 1?
B71627C8? B716152C?
CCEAB18?
Hello
If you have a valid license of Oracle support, I suggest that you raise a service request with the support of the Oracle.
This could probably be a bug and it is determined to be a bug, you must upgrade your database to a version more supported, since 10.2 is out of taken in charge for some time.
Kind regards
Suntrupth
-
Do magsafe pin burn because of the fluctuation of power?
Hello
I have end of 2013 Macbook Pro (retina) that I bought in the USA. Now, I use it in India.
One of the pins of the power adapter 85W Magsafe 2 is burned and glued. It's the tiny pin next to the great.
Corresponding connector in the laptop also get burned.
To power the laptop, I attach and detach the magsafe several times to make it work. This is due to
power fluctuation? The magsafe also get very hot when the laptop support.
If it's because of the fluctuation of power, I can use "voltage stabilizer" or UPS?
Please, give me suggestion to solve this problem.
Thanks in advance,
Jay
WeAreStardust wrote:
Hello
I have end of 2013 Macbook Pro (retina) that I bought in the USA. Now, I use it in India.
One of the pins of the power adapter 85W Magsafe 2 is burned and glued. It's the tiny pin next to the great.
Corresponding connector in the laptop also get burned.
To power the laptop, I attach and detach the magsafe several times to make it work. This is due to
power fluctuation? The magsafe also get very hot when the laptop support.
If it's because of the fluctuation of power, I can use "voltage stabilizer" or UPS?
Please, give me suggestion to solve this problem.
Thanks in advance,
Jay
Voltage stabilizer is always good if you always dirty power. It causes burning pine? I don't see how unless the connection is not so good PIN-to-pin. Spikes can cause this.
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There are several sites that offer downloads of Firefox.
I don't trust anything but mozilla.orgBut I can't find a download button on mozilla.
I use Linux because my firefox on Windows 7 no longer works and the default download seems to be a Linux version of firefox.
How can I download a version of windows?
Why Firefox stop working. I have download Tunein Radio - program - and it looked as if he was installing junkware.
I stopped the download but it seems to have already installed what is called the file opener. I uninstalled fire opener.That may have caused the problem
Hello, you will find the download links for all supported systems and languages to https://www.mozilla.org/firefox/all/
If you think that the problem on your system is caused by malware, it is probably advisable to run a full scan of your system with security tools like the free version of malwarebytes & adwcleaner, which are specialized in the adware and browser hijackers.
Fix Firefox problems caused by malicious software -
Update Firefox 6.0 is useless to me because many websites I visit are not displayed properly, I guess because the Java modules are disabled because of incompatibility. They appear correctly in Internet Explorer.
In addition, the add-on from Trend Micro is not compatible, which leaves me with a positive feeling.
When I try to check to see if these modules can be updated, the menu item Tools/Addons just goes to a page with "loading" and stays there for several minutes without change until I close it.
I would like to know the procedure to regularize this version of Firefox to my previous version that worked.
Firefox 5.0/5.0.1/4.0/4.0.1 and earlier 3.6.20 all contain questions of security and stability that will not be corrected. You put your system at risk by using any version of Firefox that 6.0 or 3.6.20. Any person who displays a link to other versions is to be irresponsible, in my opinion.
Java
If the incompatible extensions in Add-ons > Extensions are Java Console, you have no need them unless your doing Java development. Most of the users have not yet installed, but Java will install Java Console with each update. You can delete them manually:The only thing that affects the functioning of the sites/Java applets on the web is the plugin (Add-ons - > Plugins) "Java (TM) Platform SE (version)". Do not forget that it is enabled and that you have not all extensions which affect/block "scripts".
- Check commonly used plugins: https://www-trunk.stage.mozilla.com/en-US/plugincheck/
- Update or install Java (aka, next generation Java plug-in for the Mozilla browsers): install or update Java in Firefox
Trend Micro
You must contact Trend Micro or go to the forums on their website to inquire about their plans to update the add-ons/toolbars they install in Firefox.Problem with the display of the Add-ons Manager
The Add-ons Manager gets in a loop of loading due to the recent update of Firefox 6 and servers being overloaded because users and update process are looking for updates to the add-on. If you stay away from the "Get Add-ons" selection on the left of the screen of the add-on Manager, you should have no problem with that. This situation is expected to resolve when the overload of Firefox 6 update is complete. I do not always use this "Get Add-ons" option, instead, I go to the website of modules and the search for what I want from there: https://addons.mozilla.org/en-US/firefox/search/?q=clone & cat = all & x = 0 & y = 0 -
Disk space lost because of the boot camp windows partition
Hello world
I have a problem with my macbook. Once a decide install windows via boot camp. Everything is ok, I'm going to star boot camp, create the windows (100 GB for windows) partition and start the installation of windows, in windows, I format partition windows by tutorial in the site of apple and windows install beginning... after that windows displays errors that can not install windows, so a cancel every thing a restart of the mac (I'm told that I can't live without windows) , so I started mac and I watch my drive. I have 500 GB SDD, mac shows me normally of 500 GB, but the tape drive shows me only 400GB. I understand that the missing 100 GB is the windows partition, but it is now. I can't find this partition, or disk utility, or normally. Boot camp can not boot because error boot camp startup disk cannot be partitioned etc..
A few ideas how to run boot camp with this problem or how can run windows install without boot camp to try install new windwos? Sorry for my English and thank you for any response.
After you delete the BootCamp partition, you must use the disk utility to resize the OS X partition. The partitions will not resize itself automatically, you must open disk utility and manually resize the partition to use the full capacity of the drive.
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