Max buffer size in sql promt

hi all
what is the max buffer in sql window..
if it is 1000000 then can we able to increase the size
thanks

If you are talkin about SQL*Plus editor. you can look for 'Screen Buffer' at the Menubar (Options-> Environment).
Screen Buffer
This area has two text boxes: Buffer Width and Buffer Length.
     not applicable
* Use the Buffer Width text box to set the number of characters available to display on one line. The Buffer Width value must be at least as big as the LINESIZE value. Buffer Width has a default value of 100, a minimum value of 80, and a maximum value of 32,767 characters.
In the Buffer Length text box, you set the number of lines that SQL*Plus displays on the screen. The default value of the Buffer Length parameter is 1000 lines. You can specify from 100 to 2000 lines on one screen.
     Notes: When you change the Screen Buffer option, SQL*Plus displays a dialog to alert you that if you shorten the size of your screen buffer, some data may not be displayed on your screen Click OK to proceed.
     If you use SET MARKUP to send output to an HTML table, the number of lines specified in the Buffer Length variable specifies the number of HTML table rows Each HTML table row may contain more than one text line.

Similar Messages

Buffer size for SQL statement using JDBC calls

I need to find out the buffer size for SQL statements in jave/JDBC because I need to insert or update a field that could be up to 4KB in size.

I'm not sure that I follow the question; I'm not sure which buffer size you're referring to.
If you have a field that can store up to 4k worth of data, you would create a VARCHAR2(4000) column in the Oracle database (assuming it is character data) or a BLOB column (if the data is binary). Either of those two fields can be populated from JDBC.
Justin
Distributed Database Consulting, Inc.
http://www.ddbcinc.com/askDDBC

DBMS_LOB.WRITEAPPEND Max buffer size exceeded

Hello,
I'm following this guide to create an index using Oracle Text:
http://download.oracle.com/docs/cd/B19306_01/text.102/b14218/cdatadic.htm#i1006810
So I wrote something like this:
CREATE OR REPLACE PROCEDURE CREATE_INDEX(rid IN ROWID, tlob IN OUT NOCOPY CLOB)
IS
BEGIN
     DBMS_LOB.CREATETEMPORARY(tlob, TRUE);
     FOR c1 IN (SELECT ID_DOCUMENT FROM DOCUMENT WHERE rowid = rid)
     LOOP
          DBMS_LOB.WRITEAPPEND(tlob, LENGTH('<DOCUMENT>'), '<DOCUMENT>');
          DBMS_LOB.WRITEAPPEND(tlob, LENGTH('<DOCUMENT_TITLE>'), '<DOCUMENT_TITLE>');
          DBMS_LOB.WRITEAPPEND(tlob, LENGTH(NVL(c1.TITLE, ' ')), NVL(c1.TITLE, ' '));
          DBMS_LOB.WRITEAPPEND(tlob, LENGTH('</DOCUMENT_TITLE>'), '</DOCUMENT_TITLE>');
          DBMS_LOB.WRITEAPPEND(tlob, LENGTH('</DOCUMENT>'), '</DOCUMENT>');
          FOR c2 IN (SELECT TITRE,TEXTE FROM PAGE WHERE ID_DOCUMENT = c1.ID_DOCUMENT)
          LOOP
               DBMS_LOB.WRITEAPPEND(tlob, LENGTH('<PAGE>'), '<PAGE>');
               DBMS_LOB.WRITEAPPEND(tlob, LENGTH('<PAGE_TEXT>'), '<PAGE_TEXT>');
               DBMS_LOB.WRITEAPPEND(tlob, LENGTH(NVL(c2.TEXTE, ' ')), NVL(c2.TEXTE, ' '));
               DBMS_LOB.WRITEAPPEND(tlob, LENGTH('</PAGE_TEXT>'), '</PAGE_TEXT>');
               DBMS_LOB.WRITEAPPEND(tlob, LENGTH('</PAGE>'), '</PAGE>');
          END LOOP;
     END LOOP;
END;
Issue is that some page text are bigger than 32767 bytes ! So I've got an INVALID_ARGVAL...
I can't figure out how can I increase this buffer size and how to manage this issue ??
Can you please help me :)
Thank you,
Ben
Edited by: user10900283 on 9 févr. 2009 00:05

Hi ben,
I'm afraid, that doesn't help much, since you have obviously rewritten your procedure based on the advise given here.
Coluld you please post your new procedure, as formatted SQL*Plus, embedded in {noformat}{noformat} tags, like this:SQL> CREATE OR REPLACE PROCEDURE create_index(rid IN ROWID,
2 IS
3 BEGIN
4 dbms_lob.createtemporary(tlob, TRUE);
5
6 FOR c1 IN (SELECT id_document
7 FROM document
8 WHERE ROWID = rid)
9 LOOP
10 dbms_lob.writeappend(tlob, LENGTH('<DOCUMENT>'), '<DOCUMENT>');
11 dbms_lob.writeappend(tlob, LENGTH('<DOCUMENT_TITLE>')
12 ,'<DOCUMENT_TITLE>');
13 dbms_lob.writeappend(tlob, LENGTH(nvl(c1.title, ' '))
14 ,nvl(c1.title, ' '));
15 dbms_lob.writeappend(tlob
16 ,LENGTH('</DOCUMENT_TITLE>')
17 ,'</DOCUMENT_TITLE>');
18 dbms_lob.writeappend(tlob, LENGTH('</DOCUMENT>'), '</DOCUMENT>');
19
20 FOR c2 IN (SELECT titre, texte
21 FROM page
22 WHERE id_document = c1.id_document)
23 LOOP
24 dbms_lob.writeappend(tlob, LENGTH('<PAGE>'), '<PAGE>');
25 dbms_lob.writeappend(tlob, LENGTH('<PAGE_TEXT>'), '<PAGE_TEXT>');
26 dbms_lob.writeappend(tlob
27 ,LENGTH(nvl(c2.texte, ' '))
28 ,nvl(c2.texte, ' '));
29 dbms_lob.writeappend(tlob, LENGTH('</PAGE_TEXT>'), '</PAGE_TEXT>')
30 dbms_lob.writeappend(tlob, LENGTH('</PAGE>'), '</PAGE>');
31 END LOOP;
32 END LOOP;
33 END;
34 /
Advarsel: Procedure er oprettet med kompileringsfejl.
SQL>
SQL> DECLARE
2 rid ROWID;
3 tlob CLOB;
4 BEGIN
5 rid := 'AAAy1wAAbAAANwsABZ';
6 tlob := NULL;
7 create_index(rid => rid, tlob => tlob);
8 dbms_output.put_line('TLOB = ' || tlob); -- Not sure, you can do this?
9 END;
10 /
create_index(rid => rid, tlob => tlob);
FEJL i linie 7:
ORA-06550: line 7, column 4:
PLS-00905: object BRUGER.CREATE_INDEX is invalid
ORA-06550: line 7, column 4:
PL/SQL: Statement ignored
SQL>

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,
Source : Internal timebase, 100Khz, 10usec for each count
gate : use the function generator to send in a 50Hz signal(for testing purpose only). Period of 0.02sec
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
lyn

Hi,
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.

Max buffer size for HDS streams

How does OSMF (v2.0) compute the max buffer length for HDS streams (pre-recorded)?
I have mediaPlayer.bufferTime = 5 seconds, but I see that even on very good b/w connections, the buffer length does not exceed 7.5 secs. Is there a way to increase the maximum buffer length value, so that clients on higher b/w can accumulate a larger buffer?
By comparison, for RTMP, the buffer length seems to go up to 60sec which is consistent with what the docs say here:
http://livedocs.adobe.com/flashmediaserver/3.0/hpdocs/help.html?content=00000175.html
Thx,
- abey

No. Did not find a way to set the maxBuffer value, but I was able to workaround the problem by setting the mediaPlayer.bufferTime dynamically (i.e different values for various stages of playback, like loading, seeking, buffering, normal playback etc.)..So setting bufferTime to 60 secs during normal playback allows the buffer to grow to a decent size.
- Abey

Network Stream Max Buffer Size

Hello,
I recall an AE on here once mentioning that network streams can exhibit problems if you set a buffer size greater than 9MB, but I haven't been able to find any concrete explanation of this. The reason behind me asking is that, I'm currently running into some memory problems in my application in which I initialize my buffer to 30MB.
Basically, my application starts out running fine, but after 30-45 minutes, all of a sudden, my network stream buffer starts building up until it reaches a max value, even though I am still reading data out of it at seemingly the same rate. It's as if routine memory allocation/deallocation elsewhere in my application causes issues with the network stream.
Anyone have any insight to this?
thanks in advance,

The size of the buffer you set for your network streams will just determine how much memory is set aside within your application. If you make your stream too large, LabVIEW will throw an error such as 'Memory is Full' telling you there is not enough space to create that large of a buffer.
The important benchmarking data to look at concerning network streams is throughput and latency. The following KB has data in section 6 regarding how quickly data can be passed through a network stream:
http://www.ni.com/white-paper/12267/en/#toc4
Since you are able to function properly for the first 30-45 minutes, it does not seem that you are violating network capabilities with your setup. However, there seems to be something that is building up/slowing down after that period of time.
How did you determine that you need a 30 MB buffer size? If you are originally only storing between 0-8000 items on the buffer, it may make sense to make a buffer smaller than 30000000 to free up resources for other parts of your application.
Here is some more information about how to profile performance and memory within LabVIEW: http://zone.ni.com/reference/en-XX/help/371361J-01/lvdialog/profile/
Applications Engineer
National Instruments

How to reduce max buffer/cache size?

Hi,
every time I copy a file which is bigger or similiar in size to my total RAM (4gb) I notice very low responsibility from firefox (which is totally unresponsive, can't switch tabs or scroll for 30-60s). Of course my free memory is very low (something like 50-100mb) and I notice some swap usage. AFAIK linux caches everthing that is being copied, but in case of such big files it seems unnecessary.
Is there a way to reduce max buffer size?
I know that buffering is good in general, but I get a feeling that firefox is giving up ram and he has to read everything again from disk which slows him down. I always have many tabs open, so often it has around 30% of memory.
I searched many times on how to reduce buffer sizes, but I've always found only articles with "buffering is always good and never an issue" attitude.
I would be very happy to hear any suggestrions,
cheers,
kajman

This seems a popular problem, going back years. The default Linux setup is bad for responsiveness, it seems.
Here's the summary of what I do:
Firstly, install a BFS-patched kernel, for a better kernel scheduler, and also so that the ionice and schedtool commands will work. Bonus points for switching to BFQ while you're at it - or stick with CFQ, which also supports ionice.
In /etc/fstab, use commit=60 rather than default of 5 seconds, and also noatime, e.g.:
UUID=73d55f23-fb9d-4a36-bb25-blahblah / ext4 defaults,noatime,nobarrier,commit=60 1 1
In /etc/sysctl.conf
# From http://rudd-o.com/en/linux-and-free-software/tales-from-responsivenessland-why-linux-feels-slow-and-how-to-fix-that
vm.swappiness=0
# https://lwn.net/Articles/572921/
vm.dirty_background_bytes=16777216
vm.dirty_bytes=50331648
In ~/.bashrc - see post, e.g.:
alias verynice="ionice -c3 nice -n 15"
In /etc/security/limits.d/ - see post. Read CK's excellent blog article, for info.
In your cp command, add the word verynice to the start, to stop the large batch copy from having the same priority as your UI.
Compile sqlite without fsync, to make e.g. firefox smoother.
Potentially use threadirqs to prioritize the interrupt-handling.
Edit: Updated vm.swappiness from 0 to 10, from CK's blog.
Edit2: Also see patch and e.g. nr_requests in thread.
Edit3: Using nice instead of schedtool - not sure whether schedtool can hog the CPU.
Edit4: Added threadirqs.
Edit5: Tweaked sysctl.conf settings.
Edit6: Added nobarrier option to mount, and sqlite's fsync.
Edit7: Removed swap comment - I do use a swapfile, these days, mainly because firefox needs so much virtual RAM to compile.
Last edited by brebs (2014-03-10 09:51:34)

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
rogram, the AO and AI part is seperated, AO Write buffer is in a while loop while AI read is not. Would that be a problem? Or it's something else?
Also, I am trying to measure data much larger than the board buffer size limit. Is it possible to make the measurement by modifying the program?
I really appreciate any of your help. Thank you very much!
Best,
Jenna

Jenna,
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

SQL*NET V2 에서 BUFFER SIZE 지정 방법

제품 : SQL*NET
작성날짜 : 1996-04-15
SQL*NET V2와 ODBC Driver를 사용하는 경우 Power Builder, Visual Basic,
SQL Windows, Object View, Excel, Access 등과 같은 프로그램을 사용하면서
대량의 데이타를 처리하는 경우 세션이 끊어지거나 하는 문제가 발생을 하면
SQL*NET V2의 Buffer Size를 줄여 줌으로써 문제를 해결할 수 있습니다.
PC의 tnsnames.ora화일에 SDU 를 적용하여 다음과 같이 수정하면 됩니다.
만약 SDU를 적용하여도 문제가 해결이 안된다면 DEDICATED 방식으로 접속
을 하여서 사용하기 바랍니다.
tnsnames.ora 화일의 위치
16BIT SQL*NET : c:\orawin\network\admin
32BIT SQL*NET : c:\orawin95\network\admin
=======================
SDU (Session Data Unit)
=======================
Syntax : SDU=n (Byte)
Range for 'n': 512 <= n <= 2048
Default value = 2048 Bytes.
=========
바꾸기 전
=========
TORA =
(DESCRIPTION=
(ADDRESS=
(PROTOCOL=TCP)
(PORT=1521)
(HOST=krhp2)
(CONNECT_DATA=(SID=RC))
=======
바꾼 후
=======
TORA =
(DESCRIPTION=
(ADDRESS=
(PROTOCOL=TCP)
(PORT=1521)
(HOST=krhp2)
(CONNECT_DATA=(SID=RC))
(SDU=1024)
단, 서버가 ORACLE V7.3 인 경우에는 SDU를 서버쪽에도 세팅할 수 있다.
서버의 listener.ora 화일에서
========
바꾸기 전
========
SID_LIST_LIST73 =
(SID_LIST =
(SID_DESC =
(SID_NAME = ORA73)
(ORACLE_HOME=/oracle2/ora73/app/oracle/product/7.3.2)
=======
바꾼 후
=======
SID_LIST_LIST73 =
(SID_LIST =
(SID_DESC =
(SDU=1024)(SID_NAME = ORA73)
(ORACLE_HOME=/oracle2/ora73/app/oracle/product/7.3.2)
와 같이 변경해 주면 된다. 서버와 클라이언트 양쪽에 SDI가 세팅된 경우에는
두 값중 작은 값을 사용하게 된다.

I have 4 redo log groups with one member each, size of each redo log file is 128 MB( By doing some research on internet I found the solution to increase the redo logs file size which I tried upto 400MB each still getting the same error. If there is any other way to check optimal size of REDO FILES, without changing the size of FAST_START_MTTR_TARGET please share with me). Use below doc to check redo log optimum size. And also as per note mentioned by Justin you can ignore the alert as its not going to harm your database.
274264.1 (10g New Feature - REDO LOGS SIZING ADVISORY)
Mark your Post as Answered or Helpful if Your question is answered.
Thanks & Regards,
SID
(StepIntoOracleDBA)
Email : [email protected]
http://stepintooracledba.blogspot.in/
http://www.stepintooracledba.com/

Java.sql.SQLException: Insufficient Buffer size to store Columns Names

Hi !
Here is my question: every time I query
some tables in my database I get this
strange exception:
java.sql.SQLException: Insufficient Buffer
size to store Columns Names
This happens to me since we upgraded
Oracle server to a new revision version
with new JDBC classes.
Anyone can help me to fix the problem ? I
don't want to rename
the column names to shorter names.
Thanx

Thom,
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.

Determining the max allowable buffer size

I am working on a program which works with very large amounts of data. Each job that is processed requires the program to read through as many as several hundred files, each of which has tens of thousands of values. The result of the operation is to take the data values in these files, rearrange them, and output the new data to a single file. The problem is with the new order of the data. The first value in each of the input files (all several hundred of them) must be output first, then the 2nd value from each file, and so on. At first I tried doing this all in memory, but for large datasets, I get OutOfMemoryErrors. I then rewrote the program to first output to a temporary binary file in the correct order. However, this is a lot slower. As it processes one input file, it must skip all around in the output file, and do this several hundred times in a 60+ MB file.
I could tell it to increase the heap size, but there is a limit to how much it will let me give it. I'd like to design it in a way so that I could allocate as big of a memory buffer as I can, read through all the files and put as much data in as it can into the buffer, output the block of data to the output file, and then run through everything again for the next block.
So my question is, how do I determine the biggest possible byte buffer I can allocate, yet still have some memory left over for the other small allocations that will need to be done?

The program doesn't append, it has to write data to the binary file out of order because the order that it reads data from the input files is not in the order that it will need to be output. The first value from all of the input files have to be output first, followed by the second value from every input file, and so on. Unless it is going to have several hundred input files open at once, the only way to output it in the correct order is to jump around the output file. For example, say that there are 300 input files with double values. The program opens the first input file, gets the first value and outputs at position 0. Then it reads the second value and must write it to position 300 (or byte position 8*300 considering the size of a double). The third value must go to position 600, and so on. That is the problem, it must output the values in a different order than it reads them.
Without giving any VM parameters to increase the heap size, Java will let me create a byte buffer of 32MB in size, but not much more. If the data to be output is more than 32MB, I will need to work on the data in 32MB chunks. However, if the user passes VM parameters to increase the heap size, the program could create a larger buffer to work on bigger chunks and get better performance. So somehow I need to find out what a reasonable buffer size is to get the best performance.

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,
Sam

The 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

SharePoint - Error_1_Error occurred in deployment step 'Add Solution': Timeout expired. The timeout period elapsed prior to obtaining a connection from the pool. This may have occurred because all pooled connections were in use and max pool size was rea

Hi,
I am Shanmugavel, SharePoint developer,
I am facing the below SharePoint 2013 deployment issue while deploying using VS2012.
If i will deploy the same wsp or existing wsp
(last build) using direct powershell deployment, the solution adding properly, but the same timeout exception coming while activation the features. Please find the below error.
I tried the below activists:
1. Restarted my dev server, DB server.
2. tried the same solution id different server
3. tried existing wsp file (last build version)
4. Deactivated all the features, including project Active deployment configuration.... but still i am facing the same issue.
I hope this is not coding level issue, because still my code is not start running, before that some problem coming.
Please help me any one..... Last two days i am struck because of this...

What you need to understand is the installation of a WSP does not do much. It just makes sure that you relevant solution files are deployed to the SharePoint farm.
Next comes the point when you activate the features. It is when the code which you have written to "Activate" certain features for your custom solution.
Regarding the error you are getting, it typically means that you have more connections (default is I guess 100) open for a SQL database then you are allowed to.
If you have a custom database and you are opening a connection, make sure you close it as well.
Look at the similar discussion here:
The timeout period elapsed prior to obtaining a connection from the pool. This may have occurred because all pooled connections were in use and max pool
size was reached[^]
I would suggest further to look at the
ULS logs[^] to get better insight.
Manas Bhardwaj's Stream : www.manasbhardwaj.net

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.
Tao

Hi,
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

Buffer size problem

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

Max buffer size in sql promt

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