Will autoextend on increase datafile size?

Hi i am observing in many posts since 2 weeks that many DBA's are posting that because i had set autoextend on my file size increase to <what ever the value>. am really wondered and somebody could please explain.
if necessary refer to post by sarat on undotbs size.

Hi Pavan,
Two questions you need to ask yourself
1 As the datafile is the smallest unit of recovery, how much time will recovery of , say, 2 Gb take? How much downtime can I afford?
2 This is the age old question, assuming you don't want to fill up a disk (we usually don't set a maxsize, but monitor free disk space), how much free space is there on the disk.
So the answer is 'It depends'
Sybrand Bakker
Senior Oracle DBA

Similar Messages

Increase the Oracle datafile size or add another datafile

Someone please explain,
Is it better to increase the Oracle datafile size or add another datafile to increase the Oracle tablespace size?
Thanks in advance

The decision must also includes:
- the max size of a file in your OS and/or file system
- how you perform your backup and recovery (eg:do you need to change the file list)
- how many disks are available and how they are presented to the OS (raw, LVM, striped, ASM, etc.)
- how many IO channels are available and whether you can balance IO across them
Personal default is to grow a file to the largest size permitted by OS unless there is a compelling reason otherwise. That fits nicely with the concept of BIGFILE tablespaces (which have their own issues, especially in backup/recovery)

Add datafile or increase the size?

Hi, I have this question. When is recomendable to add a datafile on the tablespace and when is recomendable to increase the size of the datafile on the tablespace?
Thanks!

What i feel is
if you dont have free space in the file system then adding datafile to another filesystem is the only option.In this case we cannot increase the datafilesize.
NO free space in filesystem---add datafile in another filsystem
else increase data file size.
increasing the datafile increases the time in recovery incase if datafile is crashed.
Datawarehouse Db suits big tablespaxces.
Correct me if i am wrong

Increase sysaux datafile size

I have oracle 10.0.2.4.
My sysaux datafile is 600mb and t has only 38mb free space.
I want to increase the size of that file.
From some post i got this query for check the component of sysaux
sql>select occupant_name,schema_name,space_usage_kbytes from v$sysaux_occupants ;
o/p
OCCUPANT_NAME          SCHEMA_NAME     SPACE_USAGE_KBYTES
SM/AWR                    SYS          312320
SM/OPTSTAT               ,SYS,          115200
EM,                    SYSMAN,          86848
SM/ADVISOR               ,SYS,          38464
LOGMNR,                    SYSTEM,          6080
SM/OTHER               ,SYS,          4928
LOGSTDBY,               SYSTEM,          896
AO,                    SYS,          768
XSOQHIST,               SYS,          768
STREAMS,               SYS,          512
JOB_SCHEDULER               ,SYS,          384
TSM                    ,TSMSYS,     256
ODM                    ,DMSYS,          0
SDO,                    MDSYS,          0
WM,                    WMSYS,          0
ORDIM,                    ORDSYS,          0
ORDIM/PLUGINS               ,ORDPLUGINS,     0
ORDIM/SQLMM,          SI_INFORMTN_SCHEMA,     0
STATSPACK,          PERFSTAT,          0
TEXT,               CTXSYS,               0
ULTRASEARCH,          WKSYS,               0
ULTRASEARCH_DEMO_USER,     WK_TEST,          0
EXPRESSION_FILTER,     EXFSYS,               0
EM_MONITORING_USER     ,DBSNMP,          0
XDB,               XDB,               0
XSAMD,               OLAPSYS,          0

You might also want to check the retention policy on your AWR snaps because they might be filling it up when you don't want to keep them. And, check how often you are taking snaps. The documentation is here:
http://docs.oracle.com/cd/E11882_01/appdev.112/e25788/d_workload_repos.htm#i1003494
The default for snaps to be taken is every hour. I can't remember what the default time for them to be kept is, but you should configure it depending on your own requirements. We have ours set to 6 months.
Hope that helps,
Rob
[url http://www.ora00600.com]ORA00600.com

PDF Size will increase in size dramatically with every submit.

I have a PDF Form desinged using Adobe LiveCycle Desinger ES2.
It has a submit button which will submit the form to the server (IIS and ASP.NET) using this javascript command:
event.target.submitForm( {cURL: "http://server/ASPNETWebPage.ASPX", aPackets:["datasets","pdf"], cSubmitAs: "XDP"});
On the server, from ASP.NET, I use the following code to extract the submitted "chunk" element and convert it from Base64 to Binary PDF File:
            fs = New System.IO.FileStream(mFormFileNameFolder, IO.FileMode.Create)
            bw = New System.IO.BinaryWriter(fs)
            ' Get chunk element form the submitted XML
            Dim srChunk As New StringReader(mXML.GetElementsByTagName("chunk")(0).InnerXml)
            Do While True
                Dim theChunkLine As String
                theChunkLine = srChunk.ReadLine
                If Not String.IsNullOrEmpty(theChunkLine) Then
                    theReadBytes = theChunkLine.Length
                Else
                    theReadBytes = 0
                    Exit Do
                End If
                Dim theBase64Length = (theReadBytes * 3 / 4)
                Dim buffer() As Byte
                buffer = Convert.FromBase64String(theChunkLine)
                bw.Write(buffer)
            Loop
            bw.Close()
            bw = Nothing
            fs.Close()
            fs = Nothing
The above code is working fine, and PDF is generted successfully.
I have one problem.
With every submit, the generated PDF Size will increase dramatically. I reported this to Adobe Support, and they cofirmed that this is by desing and that with every submit, the previous PDF State is saved, and the new state is added. That is why I get huge PDF File.
I was told that the only way to solve this problem is to submit the form as PDF ONLY, and after I save the PDF File on a file system, I then must use Adobe Service/Process "exportData" to extract the XML Data from the PDF.
I think this is really big change to me. I was hoping that there is a way to indentify the latest PDF State from the chunk element.
Any help will be greatly appreciated.
Tarek.

Thanks a lot C. Myers,
You explanation helped me understand what is happening.
I have been following the same method for the past 4 years, and I was hit by this problem (OutOfMemoryException) only when some users started using image size more than 500KB. Then, I decided to report this problem.
I was able to rewrite the code to convert from Base64 to binary using buffering:
http://forums.asp.net/t/1662571.aspx/1?URGENT+Exception+OutOfMemoryException+thrown+when+w hen+converting+to+String+
So far, I am not getting OutOfMemoryExceptions, but the PDF Size will continue to grow with every submit. However, if the all the images size is less than 50KB, the increase is not significant.
Please allow me to ask this question:
Is there a way to change the above code so that I can extract only the last version of the submitted PDF from the Data Stream "chunk" element ?
Sooner or later, some one will notice that such PDF sizes are not logical. Even when the PDF does not have images, I have noticed in the past, some PDF Sizes (for Staff Profile Data Collection Form) are something like 15MB !!! I was not able to figure out why. But now I understand. I think the user must have submitted the form for saving many times.
Now, things are OK. But, I will post back if this problem will fire back.
Tarek.

Actual tables size is different than tablespace,datafile size

Hi,
I had created 10 tables with minimum extents of 256M in the same tablespace. The total size was 2560M. After 3 months run, all tables sizes were not increased over 256M. But the datafile size for that tablespace was increased sharply to 20G.
I spent a lot of time on it and could not find anything wrong.
Please help.
Thanks,

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Server Manageability - Automatic Workload Repository increasing in size

I have noticed that the SYSAUX tablespace is increasing in size to a high level and would like some help in planning what to do about it.
I have changed the SNAP_INTERVAL to 2 hours in the meantime, it was set to the default 1 hour with 7 days of retention.
I have been monitoring the occupants of SYSAUX and SM/AWR is the one that is mostly increasing in size, it has gone from 225664Kb to 250496 in one day, which relates to a change of 18% down to 16% free so in approx 8 days it will be full.
Should I just add another datafile, or is a reduced interval/retention satisfactory

I have discovered that the table wwv_flow_data_load_bad_log is quite large but strangely (in TOAD) I can desc the table but if I try to select * from sys.wwv_flow_data_load_bad_log I get ORA_00942 table or view does not exist (logged in as sys)
I have search these forums, metalink and google but cannot find any mention of this table.
It seems to be a listing of ORA error messages
Can I safely delete rows from this table? How do I do that?

Increase Datafile from 50 M to 100 M or 128 M?

I need to allocate more space to a 50 M Oracle datafile. The file is on a UNIX server running AIX. The datafile resides on a file system that has a physical partition size of 64 M. I am considering increasing the datafile to 100 M or 128 M.
Is it more efficient to create datafiles that have a physical size that is a multiple of the physical partition size of the file system? If it does not matter I will increase the size from 50 M to 100 M. If it does matter I will increase it to 128 M.
My question today regards this one datafile. I would also like to know whether it is better to make a policy that states it is best to allocate space in multiples of the physical partition size.
Thank you,
Bill

The file system is RAW? In that case you will simply waste 28M.
Or cooked? If you don't use the file system for other purposes still a waste of resources.
Sybrand Bakker
Senior Oracle DBA

Bold chars & increase font size in ALV Top of Page - OOPS

Hi,
I am using ALV OOPs to display my data.
I am splitting the container and using top container to display headings in following way:
data:   top TYPE REF TO cl_dd_document
CREATE OBJECT top
    EXPORTING
      style = 'ALV_GRID'.
lv_fontsize = cl_dd_document=>large.
lv_text = 'HEADING'.
CONDENSE lv_text.
CALL METHOD top->add_text
    EXPORTING
      text         = lv_text
      fix_lines    = 'X'
      sap_fontsize = lv_fontsize         "cl_dd_document=>large
    CHANGING
      document     = cv_top.
But the heaidng is not displayed with high font size and is similar to the text with cl_dd_document=>medium
How can I increase font size of heading.
Thanks!

Hi Vasu,
Use SAP_STYLE parameter in the method.
Value will be HEADING or KEY.
Regards,
Amitava

How to increase font size in report

Dear ABAPers,
I got one requirement that i hav to increase font size in report.
I am using Write statement in report.
PL guide me regarding this.
Regards,
Simha.

hi shakya,
I have tried that,
i think font size cannot be increased.....it wil auto adjust based on ur no of coloumns and records.... try to reduce the no of coloumns u r displaying, then it will auto adjust itelf.
With regards,
S.Barani

Datafile size minor than 4 Gb: is this a bug?

Hi all! I have a tablespace made up by 1 datafile (size = 4 Gb). Oracle 9.2.0.4.0 (on Win2k server) seems incapable of managing this; in fact, I receive ora-04031: unable to allocate 8192 bytes of shared memory but the memory of Oracle is configured correctly. Resizing this tablespace and adding a new datafile so that every datafile is 2 Gb large, I don't receive the error any longer. what do you think about this?
Bye. Ste.

Hello everybody;
The Buffer Cache Advisory feature enables and disables statistics gathering for predicting behavior with different cache sizes. The information provided by these statistics can help you size the Database Buffer Cache optimally for a given workload. The Buffer Cache Advisory information is collected and displayed through the V$DB_CACHE_ADVICE view.
The Buffer Cache Advisory is enabled via the DB_CACHE_ADVICE initialization parameter. It is a dynamic parameter, and can be altered using ALTER SYSTEM. Three values (OFF, ON, READY) are available.
DB_CACHE_ADVICE Parameter Values
OFF: Advisory is turned off and the memory for the advisory is not allocated.
ON: Advisory is turned on and both cpu and memory overhead is incurred.
Attempting to set the parameter to the ON state when it is in the OFF state may lead to the following error: ORA-4031 Inability to allocate from the Shared Pool when the parameter is switched to ON. If the parameter is in a READY state it can be set to ON without error because the memory is already allocated.
READY: Advisory is turned off but the memory for the advisory remains allocated. Allocating the memory before the advisory is actually turned on will avoid the risk of ORA-4031. If the parameter is switched to this state from OFF, it is possible that an ORA-4031 will be raised.
Make sure too that you dont need to use RMAN program to make backup...baceuse the large pool is used to this too.
Regards to everybody
Nando

How to increase disk size in solaris

Hi all
I have two disk c1t0d0s0 / c1t0d0s7
I do haven't space in disk /dev/dsk/c1t0d0s0
run df -h
/dev/dsk/*c1t0d0s0* 8,8G 7,4G 1,3G 86% /
/devices 0K 0K 0K 0% /devices
ctfs 0K 0K 0K 0% /system/contract
proc 0K 0K 0K 0% /proc
mnttab 0K 0K 0K 0% /etc/mnttab
swap 3,4G 984K 3,4G 1% /etc/svc/volatile
objfs 0K 0K 0K 0% /system/object
sharefs 0K 0K 0K 0% /etc/dfs/sharetab
/usr/lib/libc/libc_hwcap1.so.1
8,8G 7,4G 1,3G 86% /lib/libc.so.1
fd 0K 0K 0K 0% /dev/fd
swap 3,4G 72K 3,4G 1% /tmp
swap 3,4G 40K 3,4G 1% /var/run
/dev/dsk/*c1t0d0s7* 20G 21M 20G 1% /export/home
I want increasing the space in c1t0d0s0. when I installed Solaris 10 I do not looked attentively the size allocated
Thanks

Hi,
As I understand, you want to increase the size of the root partition (where you installed Solaris) which resides in c1t0d0s0. I think it can be done using Concatenations from Solaris Volume Manager (SVM).
I have tried it in non root partition like /export/home and it is very easy.
metainit -f d0 2 1 c1t0d0s7 1 c2t0d0s7 //this will create volume d0 as a concatenation
growfs -M /export/home /dev/md/rdsk/d0 //this will grow the /export/home partition
Regards,
Rei

ASM on SAN datafile size best practice for performance?

Is their a 'Best Practice' for datafile size for performance?
In our current production, we have 25GB datafiles for all of our tablespaces in ASM on 10GR1, but was wondering what the difference would be if I used say 50GB datafiles? Is 25GB a kind of mid point so the data can be striped across multiple datafiles for better performance?

We will be using Redhat Linux AS 4 update u on 64-bit AMD Opterons. The complete database will be on ASM...not the binarys though. All of our datafiles we have currently in our production system are all 25GB files. We will be using RMAN-->Veritas Tape backup and RMAN-->disk backup. I just didn't know if anybody out there was using smallfile tablespaces using 50GB datafiles or not. I can see that one of our tablespaces will prob be close to 4TB.

Increase font size in Windows 7 Photoshop Elements 11?

I'd have thought (since this has been a problem since 9 and that HD displays are fairly common now) it would have been addressed. I still can't find a way to increase the font size in PE 11, though. Am I missing something? It seems the menu fonts have increased in size in proportion to what Windows font size I'm using, but all the other fonts in PE 11 are still too tiny to read meaning (unless I am missing something) the software is still unusable (unless I sacrifice resolution).

Oh well, at least I only downloaded the trial I guess. I feel sorry for anyone who buys this expecting it to be fully compatible with HD monitors. Adobe are being lazy, I think, expecting people to lower the screen resolution. I just checked PC World and 8 out of 10 of the most popular monitors were full 1080 HD. I wonder how many will go to GIMP and not return?

To increase font size in List Output in Report

Hi, I have to increase the font size of my report's list output. I dont have to print it. So, please dont suggest print control. Only it needs to be displayed as an output.....
Thanks.

Sagar,
If you want the font size to be more you can do that using the SAP GUI settings .The output will then appear in the increased format as it is only a list output that you are trying to see.press ALT+F12.Choose New Visual Design and then increase font size to maximum.
Hope this helps.
Cheers
Nishanth

Will autoextend on increase datafile size?

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