Svrmgrl problem. illegal redo buffer size
Hello experts,
I installed oracle 8.1.5 in Linux 6.1 successfully.
And I rebooted the computer and got into the svrmgrl to start the db.
I can connect using "connect internal"
But I cannot start the db using "startup;"
I get this error message,
ORA-07304: ksmcsg: illegal redo buffer size.
I had no idea what to do now.
Please help me out.
And many many thanks in advance !!!
null
Check log_buffer parameter in init.ora.
If the OS block size is 512, a value of 10*512 or 5120 will be valid.
Rounding off to 5100 would generate this error.
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Hello experts,
I installed oracle 8.1.5 in Linux 6.1 successfully.
And I rebooted the computer and got into the svrmgrl to start the db.
I can connect using "connect internal"
But I cannot start the db using "startup;"
I get this error message,
ORA-07304: ksmcsg: illegal redo buffer size.
I had no idea what to do now.
Please help me out.
And many many thanks in advance !!!
nullHi,
Did you set up a working database ???
if so, check the init.ora file and Verify that the log_buffer parameter in the file is a multiple of machine block size.
Rotem -
Where can I change the buffer size for LKM File to Oracle (EXTRENAL TABLE)?
Hi all,
I'd a problem on the buffer size the "LKM File to Oracle (EXTRENAL TABLE)" as follow:
2801 : 72000 : java.sql.SQLException: ORA-12801: error signaled in parallel query server P000
ORA-29913: error in executing ODCIEXTTABLEFETCH callout
ORA-29400: data cartridge error
KUP-04020: found record longer than buffer size supported, 524288, in D:\OraHome_1\oracledi\demo\file\PARTIAL_SHPT_FIXED_NHF.dat
Do you know where can I change the buffer size?
Remarks: The size of the file is ~2Mb.
TaoHi,
The behavior is explained in Bug 4304609 .
You will encounter ORA-29400 & KUP-04020 errors if the RECORDSIZE clause in the access parameters for the ORACLE_LOADER access driver is larger than 10MB and you are loading records larger than 10MB. Which means their is a another limitation on read size of a record which is termed as granule size. If the default granule size is less then RECORDSIZE it limits the size of the read buffer to granule size.
Use the pxxtgranule_size parameter to change the size of the granule to a number larger than the size specified for the read buffer.You can use below query to determine the current size of the granule.
SELECT KSPFTCTXPN PARAMETER_NUMBER,
KSPPINM PARAMETER_NAME,
KSPPITY PARAMETER_TYPE,
KSPFTCTXVL PARAMETER_VALUE,
KSPFTCTXDF IS_DEFAULT,
KSPPIFLG MODIFICATION_FLAG,
KSPFTCTXVF VALUE_FLAG
FROM X$KSPPI X, X$KSPPCV2 Y
WHERE (X.INDX+1) = KSPFTCTXPN AND
KSPPINM LIKE '%_px_xtgranule_size%';
There is no 'ideal' or recommended value for pxxtgranule_size parameter, it is safe to increase it to work around this particular problem. You can set this parameter using ALTER SESSION/SYSTEM command.
SQL> alter system set "_px_xtgranule_size"=10000;
Thanks,
Sutirtha -
ORA-17414: Insufficient Buffer size to store Columns Names
Hi,
During data retrieval from an Oracle 8.0.6 database (on HP-Unix) we get the following error: "Insufficient Buffer size to store Columns Names". This error is registered as ORA-17141 (???). At least this is what we see if we have a look at the JDBC driver (8.1.6 driver for Java 1.2.x in file "Message.properties" of the "classes12.zip")
We cannot find any further explanation for this problem. Which buffer size is meant? Can this buffer be adjusted? Is this an oracle buffer or an buffer used by java?
Thanks,
RonaldThom,
How many columns are there in your query? Do they have lengthy column names? Has your schema or query changed during the upgrade?
One possible workaround if you have lengthy column names in your query is to try doing something like "select somelongcolumnname1 as c1, somelongcolumnname2 as c2 ..." and see if it works. Admittedly, this is only a workaround, but it should be better than renaming your column names. -
Hi,
i'm trying to size redolog and the buffer size in the best way.
I already adjusted the size of the redo to let them switch 1/2 times per hour.
The next step is to modify the redo buffer to avoid waits.
Actually this query gives me 896 as result.
SELECT NAME, VALUE
FROM V$SYSSTAT
WHERE NAME = 'redo buffer allocation retries';
I suppose this should be near to 0.
Log_buffer is setted to 1m.
And i read "sizing the log buffer larger than 1M does not provide any performance benefit" so what can i do to reduce that wait time?
Any ideas or suggestions?
Thanks
AcrACR80,
Every time you create a redo entry, you have to allocate space to copy it into the redo buffer. You've had 588 allocation retries in 46M entries. That's "close to zero"..
redo entries 46,901,591
redo buffer allocation retries 588The 1MB limit was based around the idea that a large buffer could allow a lot of log to accumulate between writes with the result that a process could execute a small transaction and commit - and have to wait a "long" time for the log writer to do a big write.
If in doubt, check the two wait events:
"log file sync"
"log buffer space".
As a guideline, you may reduce waits for "log buffer space" by increasing the size of the log buffer - but this introduces the risk of longer waits for "log file sync". Conversely, reducing the log buffer size may reduce the impact of "log file sync" waits but runs the risk of increasing "log buffer space" waits.
Regards
Jonathan Lewis
http://jonathanlewis.wordpress.com
http://www.jlcomp.demon.co.uk -
SQL*Plus, Oracle 8.1.7, Win2000Pro
I have an script which spool the out put to a file. But I fill the biffer or something like this. If I limit the quantity od chacaters sent to the file, everything works fine.
ORA-20000: ORU-10027: buffer overflow, limit of 2000 bytes
Where can I enlarge the buffer size?set serveroutput on size 1000000Richard
-
On my computer I have discovered some strange behavior then reading data from the sound card. Then the buffer size is 2x samples to read everything is as expected. But since I read the sound card 10 times pr second I feel a .2 second buffer is to small. I am using XP, and XP is not a RTOS so with a buffer set to 0.2 seconds I may lose data. Therefore I set the buffer size (number samples/ch on Sound Input Configure.vi) to be in range of 2 seconds. The result then is that then reading from Sound input.vi, a reading often take more than 0.1 second. On my computer it is often 500mSec. Then the next 5 read follows with almost zero interval. I do not loose data. But on my front panel the graphs looks like an very early silent movie. This error was introduced in Labview 8.x. To be honest I think the labview 7.x sound system was much better in many ways.
But before I point any finger NI. Other people has to verify the behavior I experience. I have made an example showing this error. It is a modified version of the "Continuous Sound Input.vi" example. Then the "buffer in seconds" control is set to 0.2 every thing works OK. Changer this to a larger number will produce the mentioned above hiccup. The larger number in this control the larger hiccup. Is it any way to fix this? My solution up to now has to use a free 3. part software(http://www.zeitnitz.de/Christian/index.php?sel=waveio) But I guess it soon will be outdated. It may not work with newer windows versions.
Any help at all will be appreciated
And yes I have the most updated version fo DirectX. Also I se this in Labview 2009 which I have trail version of. The VI I have made is in 8.6
Message Edited by Coq Rouge on 09-07-2009 10:54 AM
Besides which, my opinion is that Express VIs Carthage must be destroyed deleted
(Sorry no Labview "brag list" so far)
Attachments:
Continuous Sound Input with timing.vi 23 KBmacaba wrote:
If you take a moving average of the 0.2s buffer vs. 3s buffer at an update rate of 10, then they are the same (just under 100ms), so the average refresh rate is the same. I agree that is odd behaviour that the time between sound reads go to zero quite a lot then take a long time once in a while (presumably to fill the buffer
I guess it goes to zero because it is reading data from the buffer it do not has to wait for data from the sound card. The mysterious thing is the periodic delay. You are also correct then saying that average timing is correct. And in my application I have no data loss.
If you search for sound in this forum you will find out that many people has reported trouble with the sound system.
Besides which, my opinion is that Express VIs Carthage must be destroyed deleted
(Sorry no Labview "brag list" so far) -
I currently have an HTPC that I want to replace with the ATV3. I rip all my Blu-Ray and DVD disks and encode them in x264 using Handbrake. This keeps my toddler from destroying my media (especially since many of them are Disney movies) and keeps all our movies easily accessable.
Since the ATV3 uses an A5 CPU, that means it is limited to L4.0 of x264, which means my files max bitrate can only be 25mb. I use variable bitrates which I currently have capped at 40mb (as to not exceed the source). I plan to change up my future encodes to limit the max bitrate to 25mb, but when you specify a max bitrate you need a buffer size as well.
So the question becomes, what is the hardware buffer size for the new ATV3? I would assume it is more than 25mb, but I want to be sure before I start doing more encodes so I do not run into playback problems.Tree Dude wrote:
I am not sure what I said that was against the T&Cs. Backing up disks I purchased is completely legal and a very common use for these types of devices.
Apple Support Communities Terms of Use
Specifically 2 below:
Keep within the Law
No material may be submitted that is intended to promote or commit an illegal act.
Do not submit software or descriptions of processes that break or otherwise 'work around' digital rights management software or hardware. This includes conversations about 'ripping' DVDs or working around FairPlay software used on the iTunes Store.
Do not post defamatory material.
Your usage to any sane person constitutes 'fair use'. Specific laws regarding this kind of thing vary from country to country, but Apple tend to frown on such discussions - their rules not ours.
If you bend the rules, your posts may get deleted. Trust me, been there, had posts deleted in the past.
AC -
Linux Serial NI-VISA - Can the buffer size be changed from 4096?
I am communicating with a serial device on Linux, using LV 7.0 and NI-VISA. About a year and a half ago I had asked customer support if it was possible to change the buffer size for serial communication. At that time I was using NI-VISA 3.0. In my program the VISA function for setting the buffer size would send back an error of 1073676424, and the buffer would always remain at 4096, no matter what value was input into the buffer size control. The answer to this problem was that the error code was just a warning, letting you know that you could not change the buffer size on a Linux machine, and 4096 bytes was the pre-set buffer size (unchangeable). According to the person who was helping me: "The reason that it doesn't work on those platforms (Linux, Solaris, Mac OSX) is that is it simply unavailable in the POSIX serial API that VISA uses on these operating systems."
Now I have upgraded to NI-VISA 3.4 and I am asking the same question. I notice that an error code is no longer sent when I input different values for the buffer size. However, in my program, the bytes returned from the device max out at 4096, no matter what value I input into the buffer size control. So, has VISA changed, and it is now possible to change the buffer size, but I am setting it up wrong? Or, have the error codes changed, but it is still not possible to change the buffer size on a Linux machine with NI-VISA?
Thanks,
SamThe buffer size still can't be set, but it seems that we are no longer returning the warning. We'll see if we can get the warning back for the next version of VISA.
Thanks,
Josh -
Sychronize AO/AI buffered data graph and measure data more than buffer size
I am trying to measure the response time (around 1ms) of the pressure drop indicated by AI channel 0 when the AO channel 0 gives a negetive single pulse to the unit under test (valve). DAQ board: Keithley KPCI-3108, LabView Version: 6.1, OS system: Win2000 professional.
My problem is I am getting different timed graph between the AI and AO channels every time I run my program, except the first time I can get real time graph. I tried to decrease the buffer size less than the max buffer size of the DAQ board (2048 samples), but it still does unreal time graph from AI channel, seems it was still reading from old data in the buffer when AO writes the new buffer data, that is my guessing. In my p
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I really appreciate any of your help. Thank you very much!
Best,
JennaJenna,
You can modify the X-axis of a chart/graph in LabVIEW to display real-time. I have included a link below to an example program that illustrates how to do this.
If you are doing a finite, buffered acquisition make sure that you are always reading everything from the buffer for each run. In other words, If you set a buffer size of 5000, then make sure you are reading 5000 scans (set number of scans to read to 5000). This will assure you are reading new data every time you run you program. You could always put the AI Read VI within a loop and read a smaller number from the buffer until the buffer is empty (monitor the scan backlog output of the AI Read VI to see how many scans are left in the buffer).
You can set a buffer size larger than the FIFO
buffer of the hardware. The buffer size you set in LabVIEW is actually a software buffer size within your computer's memory. The data is acquired with the hardware, stored temporarily within the on-board FIFO, transferred to the software buffer, and then read in LabVIEW.
Are you trying to create a TTL square wave with the analog output of the DAQ device? If so, the DAQ device has counters that can generate a highly accurate digital pulse as well. Just a suggestion. LabVIEW has a variety of shipping examples that are geared toward using counters (find examples>>DAQ>>counters). I hope this helps.
Real-Time Chart Example
http://venus.ni.com/stage/we/niepd_web_display.DISPLAY_EPD4?p_guid=B45EACE3E95556A4E034080020E74861&p_node=DZ52038&p_submitted=N&p_rank=&p_answer=&p_source=Internal
Regards,
Todd D.
National Instruments
Applications Engineer -
Network Stream Error -314340 due to buffer size on the writer endpoint
Hello everyone,
I just wanted to share a somewhat odd experience we had with the network stream VIs. We found this problem in LV2014 but aren't aware if it is new or not. I searched for a while on the network stream endpoint creation error -314340 and couldn't come up with any useful links to our problem. The good news is that we have fixed our problem but I wanted to explain it a little more in case anyone else has a similar problem.
The specific network stream error -314340 should seemingly occur if you are attempting to connect to a network stream endpoint that is already connected to another endpoint or in which the URL points to a different endpoint than the one trying to connect.
We ran into this issue on attempting to connect to a remote PXI chassis (PXIe-8135) running LabVIEW real-time from an HMI machine, both of which have three NICs and access different networks. We have a class that wraps the network stream VIs and we have deployed this class across four machines (Windows and RT) to establish over 30 network streams between these machines. The class can distinguish between messaging streams that handle clusters of control and status information and also data streams that contain a cluster with a timestamp and 24 I16s. It was on the data network streams that we ran into the issue.
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Ultimately through experimenting with it, we found that the buffer size of the create writer endpoint for the data stream was causing the problem and that we had fat fingered the constants for this buffer size. Also, pre-allocating or allocating the buffer on the fly made no difference. We imagine that it may be due to the fact we are using a complex data type with a cluster with an array inside of it and it can be difficult to allocate a buffer for this data type. We guess that the issue may be that by the reader endpoint establishing the connection to a writer with a large buffer size specified, the writer endpoint ultimately times out somewhere in the handshaking routine that is hidden below the surface.
I just wanted to post this so others would have a reference if they run into a similar situation and again for reference we found this in LV2014 but are not aware if it is a problem in earlier versions.
Thanks,
CurtissHi Curtiss!
Thank you for your post! Would it be possible for you to add some steps that others can use to reproduce/resolve the issue?
Regards,
Kelly B.
Applications Engineering
National Instruments -
Changing input buffer size slows down simulated device?!?
hi,
my basic problem is having a 200279 buffer overflow.
for a quick fix I increased the buffer size using DAQmxSetBufInputBufSize, but now the signal coming from the simulated device is much slower.
how can it be?
thanx!Hi,
Buffer overflow errors occur when data is written to the buffer faster than it is being read off of it. Buffer underflow errors occur when data is being read off the buffer faster than new data is being added. In order to avoid either of these, a general rule of thumb for NI devices is to acquire around 1/10th of a second of data. For example, for a sample rate of 100 Hz, set samples to read at 10 samples.
Is it possible for you to decrease the sample rate? -
Imp-00020 long column too large for column buffer size (22)
Hi friends,
I have exported (through Conventional path) a complete schema from Oracle 7 (Sco unix patform).
Then transferred the export file to a laptop(window platform) from unix server.
And tried to import this file into Oracle10.2. on windows XP.
(Database Configuration of Oracle 10g is
User tablespace 2 GB
Temp tablespace 30 Mb
The rollback segment of 15 mb each
undo tablespace of 200 MB
SGA 160MB
PAGA 16MB)
All the tables imported success fully except 3 tables which are having AROUND 1 million rows each.
The error message comes during import are as following for these 3 tables
imp-00020 long column too large for column buffer size (22)
imp-00020 long column too large for column buffer size(7)
The main point here is in all the 3 tables there is no long column/timestamp column (only varchar/number columns are there).
For solving the problem I tried following options
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2.Commit=Y Indexes=N (in this case does not import complete tables).
3.first export table structures only and then Data.
4.Created table manually and tried to import the tables.
but all efforts got failed.
still getting the same errors.
Can some one help me on this issue ?
I will be grateful to all of you.
Regards,
Harvinder Singh
[email protected]
Edited by: user462250 on Oct 14, 2009 1:57 AMThanks, but this note is for older releases, 7.3 to 8.0...
In my case both export and import were made on a 11.2 database.
I didn't use datapump because we use the same processes for different releases of Oracle, some of them do not comtemplate datapump. By the way, shouldn't EXP / IMP work anyway? -
Doing Buffered Event count by using Count Buffered Edges.vi, what is the max buffer size allowed?
I'm currently using Count Buffered Edges.vi to do Buffered Event count with the following settings,
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the max internal buffer size that i can allocate is only about 100~300. Whenever i change both the internal buffer size and counts to read to a higher value, this vi don't seem to function well. I need to have a buffer size of at least 2000.
1. is it possible to have a buffer size of 2000? what is the problem causing the wrong counter value?
2. also note that the size of max internal buffer varies w
ith the frequency of signal sent to the gate, why is this so? eg: buffer size get smaller as frequency decrease.
3. i'll get funny response and counter value when both the internal buffer size and counts to read are not set to the same. Why is this so? is it a must to set both value the same?
thks and best regards
lynHi,
I have tried the same example, and used a 100Hz signal on the gate. I increased the buffer size to 2000 and I did not get any errors. The buffer size does not get smaller when increasing the frequency of the gate signal; simply, the number of counts gets smaller when the gate frequency becomes larger. The buffer size must be able to contain the number of counts you want to read, otherwise, the VI might not function correctly.
Regards,
RamziH. -
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