Several encrypted .dmg files show much more free space that the total size of the file.

I have several encrypted .dmg files on my macbook air running OS X 10.10.1 I have had them for years with no problems. Now suddenly, in the finder, at the bottom of the finder window where it shows the number of items and free space for a disk, it shows more free space than the full size of the .dmg file. Typically it will show about 200MB for a 100 MB file. Obviously, this is a bug, but I can find no information or discussions about it anywhere.
Does anyone have the same problem? Any ideas how to fix it?

Thanks for the ideas. Unfortunately, it didn't work.
I rebuilt the spotlight index as suggested.
I tried it twice, rebooting the computer a couple of time along the way.
Below you can see the actual file as it occurs in the finder in its unopened form.
Now, below here is what the finder reports at the bottom of the finder window when the file is opened and added as a virtual disk.
Note that the total file size is 102.5 Mb
Yet the finder says it has 234.5 Mb free!
The actual size of the files on the disk add up to about 60 Mb
This occurs with several similar dmg files.
Any other ideas or experiences would be appreciated.

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My HD icon on the desktop is showing far more free space than I actually have.

I use a 2011 17" MBP with OS X Lion (750GB HD, 8GB RAM, 2.2GHz i7) and have noticed recently (only since I bought the new OS) that the Hard Drive icon on my desktop shows far more free space available than I know I have. It shows 488GB free of 497GB (with 250GB on a partition for Windows 7 Enterprise) and I know I have about 250-300GB worth of stuff. I've checked several times to ensure it's still there and all my files still work so it doesn't seem to be deleting things randomly. I just want to know if it's a calculation bug or if there's something else wrong. Thanks for any help in advance!

In case anyone reads this wondering if there's a solution, there is: turn off automatic time machine backups, and restart your computer. It turns out I had about 80GB worth of data stacking up between physical backups to external HDs. Apparently it counts as free space because it can be over-written when necessary, hence an elated free space count.
I also did a disk repair on the partition which OS X is on, which fixed some "minor logging issues" but I don't think that made a difference because nothing happened until I cleared the backup cache by turning off time machine. By the way, once I turned off time machine my HD free space sky-rocketed to 576GB of 497GB which freaked me out but don't worry, this is fixed once you restart.

Blocks have much more free space specified by pctfree moved off freelist.

We have a table with pctfree=0 and pctused=90 and experienced high session against it. During the high session, we saw lots of "read by other session", cbc chain, and "buffer busy wait" caused by the same sql (INESRT). The row size of of an average 4K with long raw. After got the block info for the "read by other session" and "buffer busy wait", I dumped the block. The strange thing is that all the of blocks dumped are not in the freelist and the available free space is over 1K.
My idea is: When the session named waiting_a experienced "read by other session" to find the block to insert data, that block must be in the freelist, otherwise the waiting_a wouldn't try to read it in buffer and wouldn't be waiting for it to be ready. Very shortly other session reading_b which was reading the block put the data in buffer and did the insert operation, and the reading_b completed its work of insert. My dump should be after reading_b completed. So the dumped block should contain the data inserted by reading_b. After that the block was got off from freelist.
But why blocks with 0x520 (1312)and 0x104c (4172) freespace got off from freelist? As pctuse is 90, a block will be got off from freelist when free space is less than 10% of the block size, and these two blocks have much more freespace.
TEST-prod-test$> grep tosp TEST_ora_23095.trc
tosp=0x2a2
tosp=0x104c
tosp=0x520
TEST-prod-TEST$> grep avsp TEST_ora_23095.trc
avsp=0x2a2
avsp=0x104c
avsp=0x520
TEST-prod-test$> grep flg TEST_ora_23095.trc
scn: 0x0328.47520b02 seq: 0x02 flg: 0x04 tail: 0x0b020602
seg/obj: 0x14e05 csc: 0x328.47520b02 itc: 1 flg: - typ: 1 - DATA
scn: 0x0328.47520f41 seq: 0x02 flg: 0x04 tail: 0x0f410602
seg/obj: 0x14e11 csc: 0x328.47520f41 itc: 1 flg: - typ: 1 - DATA
scn: 0x0328.4752153a seq: 0x02 flg: 0x04 tail: 0x153a0602
seg/obj: 0x14e0d csc: 0x328.4752153a itc: 1 flg: - typ: 1 - DATA

knowing Oracle specifically warns against using multiple blocksizes
Nope. Oracle does not warn against using multiple blocksizes, anywhere in the documentation.
The only warnings I've seen (By Daniel Morgan, and unverified) claims that Oracle was negligent and only tested the SQL optimizer with an 8k blocksize.
I'm not sure that this is true, since it would constitute misfeasance.
I know that Oracle does extensive tesing on their new features, and the docs offer the multiple blocksize feature without reservation.
Uisng multiple blocksizes is a well established, proven concept.
DBA's have been using them for decades with IMS, IDMS and DB2 before Oracle came along.
I first saw multiple blocksized used with great success in the 1980's, and they are still in use today on many large databases.
provide a measurable idea what 'lots' constitute, and how much I/O is reduced in the shops you saw?There is load of verifiable evidence out there:
http://www.google.com/search?&q=site%3Awww.tpc.org+db_16k_cache_size
This UNISYS Oracle benchmark used multiple blocksizes to achieve optimal performance
db_cache_size = 4000M
db_recycle_cache_size = 500M
db_8k_cache_size = 200M
db_16k_cache_size = 4056M
db_2k_cache_size = 35430M
http://www-03.ibm.com/support/techdocs/atsmastr.nsf/WebIndex/WP100883
The IBM Oracle Technical Brief titled "Oracle Architecture and Tuning on AIX" (November 2006) notes that careful evaluation is required before implementing multiple blocksizes:
While most customers only use the default database block size, it is possible to use up to 5 different database block sizes for different objects within the same database.
Having multiple database block sizes adds administrative complexity and (if poorly designed and implemented) can have adverse performance consequences. Therefore, using multiple block sizes should only be done after careful planning and performance evaluation.
https://metalink.oracle.com/metalink/plsql/f?p=130:14:4123909781200375285::::p14_database_id,p14_docid,p14_show_header,p14_show_help,p14_black_frame,p14_font:NOT,46757.1,1,1,1,helvetica
Metalink Note:46757.1 titled "Notes on Choosing an Optimal DB BLOCK SIZE" says that there are some benefits from having larger blocksizes

Check the total sizes of total attachments not allow more than 9 mb when adding attachments to a PDF

My clients requested the form has the validation when I add attachments to a PDF, the total sizes of these attachments not more than 9 Mb. I can just check the size of each attachment but I cannot check the total sizes of the attachment. I am not sure what I am doing wrong the coding is unsuccessful. Please help!!!!
Thank you very much.
CindyWhat
Here is the coding in event:click - attachment button
var maxSize=75497472; //bits
try{
var count= 0;
var oDoc = event.target;
var oAttachment = oDoc.dataObjects;
if(oAttachment != null){
count = oAttachment.length;
oDoc.importDataObject("attachment" + (count + 1))
var dataObj = oDoc.getDataObject("attachment" + (count + 1));
var fileName = dataObj.path;
var fileType = fileName.substring(fileName.lastIndexOf("."));
if(fileType != ".pdf" && fileType != ".PDF" && fileType != ".JPG" &&
fileType != ".jpg" && fileType != ".tif" && fileType != ".TIF"&&
fileType != ".tiff" && fileType != ".TIFF" &&
fileType != ".doc" && fileType != ".DOC"){
                xfa.host.messageBox("Please correct the file type.");
                oDoc.removeDataObject("attachment" + (count + 1));
// combine size
//get content
var oFile = oDoc.getDataObjectContents("attachment" + (count + 1), true);
                        var oBase64Stream = SOAP.streamEncode(oFile, "base64");
                      var oFile = SOAP.stringFromStream(oBase64Stream);
                        // check the length of the document
                        var lenTotal = oFile.length;
                        FileSize.rawValue = lenTotal;
if (lenTotal > maxSize)
   xfa.host.messageBox("the total size is 9 MB");
   oDoc.removeDataObject("attachment" + (count + 1));
}// end if
else
   xfa.host.messageBox("successfull attachment","Attachment",2);
catch (e)
xfa.host.messageBox("Please review the document");

We are using Microsoft SQL Server 2008 . but it's well with MySQL & JBoss

My harddisk info shows more free space as it has capazity

hi everyone,
my harddisk info shows more free space as it has capazity!
Even after using the harddisk-tool to repair rights and catalog
the info below the harddrive shows more GB than it's own size.
This also appears in the info-window (command - i )
749,GB size of HD / 765,16 GB free
But the information about the harddrive shown in the harddrive-repair-tool
seems to be right, and shows approx. 600GB free of the 750GB harddrive ...
I'am a bit worried and are looking for a solution to repair this ...
best, boschma

thx for answering ;-)
yes, I did, under FIRST AID as well ... no positive result
thx for the tipp about 'Disk Warrior'
I will try that - update to follow ...
edit:
oops - that's a lot of money to pay for 'Disk Warrior'.
maybe there are any other utilities? tipps? tricks?
Message was edited by: bosbos

HT1284 Do I need to reformat my external hard drive before I backup to it? It shows very little free space when in fact it is empty.

I am new to Imac. I want to use an external hard drive to backup to but the drive shows very little free space when in fact it is empty. Do I need to reformat it and, if so How? Thanks

What is the external disk?
Is it new? If so, maybe it has a Windows file system on it (FAT, exFAT, or NTFS). If so then reformat to "HFS+ Journaled".
What backup utility are you using? TimeMachine, Carbon Copy Cloner, SuperDuper, etc...? If the external is suppose to be bootable because you are using a cloning backup (CCC or SuperDuper), then it is also important that the disk partition table be GUID.
You can find out this information via Applications -> Utilities -> Disk Utility, select the disk (not volume on the disk) and the partition time will be shown at the botton of the window. Now Select the volume and it will tell you how the file system on the disk is formatted.
Also do you want to leave room for a recovery partition on the external disk? Then repartition it with a small (2GB) partition that can hold a bootable recovery partition that you can setup via the Apple "Recovery Disk Assistant" which can be downloaded from Apple.

Need more free space

My kids are playing Sims 2 and occasionally the game will not load because the Imac says that we need more available free space. Does anyone know how to remedy this?
Also, would increasing the amount of Virtual Memory resolve this? If so, how do I do that?
Thanks,

The reference is to disk space not memory. Apparently your hard drive is too full. You either need to delete some data to make more free space or put in a larger hard drive or get an external drive and move some files from the internal drive to the external drive to free up space.
Virtual memory is under the control of the OS and expands or contracts as needed. There's no need for the user to modify the amount of VM.

My iPad free space was shrinking. Previously I did an iOS upgrade and got more free space so I tried a restore and the same thing happened. Do I have a setting wrong?

My iPad free space was shrinking. Previously I did an iOS upgrade and got more free space so I tried a restore and the same thing happened. Do I have a setting wrong? There was a significant change from 4.3 GB to now 10.2 GB. I still have all the same apps, photos, songs, etc. So what's up? Why does my space not recover after I delete things?

This is what I did to resolve the issue. First I did a simple Reset (Home and on/off until the Apple logo appears) and it didn't help. Then I did a Restore with a reload from the backup and that also accomplished nothing. Then, I did a Restore as new with NO reload from backup and that resolved my issue.
IF you choose to try the same thing, here are some cautions. Make absolutely certain that all apps, music, movies, etc. are present in the iTunes library. Also make absolutely certain that all "regular" data, such as pdf files, Word files, etc. are present and accessible somewhere on the computer's hard drive. Be aware that you will probably lose all game data (scores, etc.). I did not investigate a solution for that because I don't play many games and I really don't care about the game history. Finally, be forewarned that it is a bit tedius recreating all your folders and putting each app where you want it.

The percentage of free space is remain unchanged after extend data file.

I have alter database and extend datafile (applsysd03.dbf), the free size is larger than before, but don't know why the percentage (MAX_PER_FREE) is remain unchanged.
FILE_NAME     TABLESPACE     TOTAL     USED     FREE PER_FREE MAX_SIZE MAX_FREE MAX_PER_FREE
applsysd03.dbf APPLSYSD     3000     1637.9     1362.1     45.4     2000 362.1     18.1
applsysd03.dbf APPLSYSD     1900     1637.9     262.1     13.8     2000     362.1     18.1
Here is the my scripts:
select b.file_name File_name,
b.tablespace_name Tablespace,
b.bytes/(1024*1024) Total,
round((b.bytes - sum(nvl(a.bytes,0)))/(1024*1024),1) Used,
round(sum(nvl(a.bytes,0))/(1024*1024),1) Free,
round((sum(nvl(a.bytes,0))/(b.bytes))*100,1) per_Free,
round(decode(b.maxbytes,0,b.bytes,b.maxbytes)/(1024*1024),1) Max_Size,
round((sum(nvl(a.bytes,0)) + decode(b.maxbytes,0,0,b.maxbytes-b.bytes))/(1024*1024),1) Max_Free,
round((((sum(nvl(a.bytes,0)) + decode(b.maxbytes,0,0,b.maxbytes-b.bytes))/(1024*1024)) / (decode(b.maxbytes,0,b.bytes,b.maxbytes)/(1024*1024))) * 100,1) Max_per_Free
from sys.dba_free_space a,sys.dba_data_files b
where a.file_id(+) = b.file_id
and exists (
select file_id,recent_record
from ( select file_name,file_id,tablespace_name, max(file_id) over (partition by tablespace_name) recent_record
from sys.dba_data_files
where tablespace_name in ('ALRD','ALRX','APPLSYSD','APPLSYSX','APD','APX','ARD','ARX','CAPD','CAPX','CARD','CARX','CFNDD','CFNDX','CGLD','CGLX','CINVD','CINCX','CPOD','CPOX','CQCD','CQCX','CTXD','GLD','GLX','HRD','HRX','ICXD','ICXX','INVD','INVX','POD','POX','RGD','RGX','CWPLD','CWPLX','CSYND','CSYNX')
) t
where t.file_id = t.recent_record
and t.file_id = b.file_id
group by b.tablespace_name, b.file_name, b.bytes,b.maxbytes
order by 9
Any clues?
FAN

To summarize - you want to see what percent of the maximum datafile space is free.
If the maxbyes <= bytes (size of the datafile) it will never autoextend. So, the max size is the current datafile size.
If the maxbytes >bytes, the max available space is the maxbyes.
So, the calculation would be:
max_percent_free = (max_size - used) / (max_size)
where max_size is either maxbytes or bytes (current datafile size).
In the first case, where datafile is 1900 meg that would be:
max_percent_free = (2000-1637) / (2000) = 18% - we use maxbytes since it is 2000, greater than the file size (1900)
After increasing the size to 3000
max_percent_free = (3000-1637) / 3000 = 45% - we use file size, 3000, since it is larger than maxbytes (2000)
If you would set maxbytes to 5 gb
max_percent_free = (5000-1637)/5000 = 67%
Does that make sense?

How can I get the amount of free space that is on my drive to show at the bottom of the drive in Lion.

How can I get the amount of free space that is on my drive to show at the bottom of the drive in Lion.
This is a must feature for me and I may have to go back to Snow Leopard.
Please help!

Right click on your desktop and choose "viewer options". Adjust the spacing and the size of your icons and you should be able to see the size of your drive(s) and the free space available on each drive with the exception of your bootcamp drive which will only show the overall size of the drive you have it on. This may be different if you only have one system drive (like on a Mac Book Pro) with a partition containing bootcamp on it. this may only show you the overall capacity, I can't say for sure though as I only use a Mac Pro with 4 seperate Hard Drives which are showing both overall capacity and free space available. Hope this helps
Denisimo

Can I purchase more free space for my iPad?

Can I purchase more "free space" due to the following message that comes up on my iMac Pro when attempting to sync with my iPad: The iPad cannot be synced because there is not enough free space to hold all of the items in the iTunes library (additional 11.03 GB required). Or is the only solution to not allow certain things to be synced?

Try wireless flash drive:
http://www.sandisk.com/products/wireless/flash-drive/

Usage reports more free space, than iTunes but music sync update fails for lack of space

32 GB iPod touch 5th generation IOS 8.3
Settings -> General -> Usage (Storage) says Used 17.1GB Available 10.3GB
itunes 12.1.2.27 says 6.15 GB free
Attempt to sync a music update - results in message(s) saying
"unable to add song ... not enough space"
I can understand some free space is need for overhead but

Connect the iPod to your computer and look at the storage used by the various categories as shown in the colored bargarph in iTunes.
Come back with the results.
An "other" larger than about 1 1/2 GB indicates corrupted files.
What is the Other on my iPhone and How to Remove It
What is "Other" and What Can I Do About It?
Next, usually restoring from backup eliminated the corrupted files. However, sometimes restoring to factory settings/new iPod is required.
To restore from backup see:
iOS: How to back up
To restore to factory settings/new iPod see:
iTunes: Restoring iOS software

Deleted files wont give me free space

i created two projects on my laptop, then exported them back to dv and dragged the projects into my trash bin. I then emptied my trash, awaiting the free space i had missed so greatly( the projects took up about 20 GB each), but after the files were deleted, which took about a second. i did not get the free space back, does anyone know what happened or could someone point me to another forum where this questin could be answered.

i created two projects on my laptop, then exported
them back to dv and dragged the projects into my
trash bin. I then emptied my trash, awaiting the
free space i had missed so greatly( the projects took
up about 20 GB each), but after the files were
deleted, which took about a second. i did not get the
free space back, does anyone know what happened or
could someone point me to another forum where this
questin could be answered.
Type Media in finder you may find those deleted files still have a connection there. Careful you don't delete the wrong ones because they're gone. anoka114

More free space after iOS 5 upgrade!.

I actually have 2.5 Gb more free space on my 32Gb iPhone 4 after the iOS5 upgrade. Is this possible?

I am also lost. I upgraded itunes and ios5 on my iPhone4. Now I have a gray slate screen on my IP4 that just says iPhone, and I am being asked to configure my device. I cannot receive phone calls. They go directly to voice mail, and I cannot make phone calls. I have tried "everything". Even with it "looking like" a backup/restore may be in process, it does not backup or restore. I have no device, no music, no contacts, no pictures. Can anyone help? Please....

How can i gain more free space my imac 8.1 needs 2gb to install os x

how can i gain more free space my imac 8.1 needs 2gb to install os x mavericks

Petscorner93 wrote:
needs 2gb to install os x mavericks
This referes to RAM = Memory... not available Hard Drive Space.
Note: Macs can be very Fussy about RAM...
You can use these Links to check which RAM is suitable for your Mac...
http://eshop.macsales.com/shop/apple/memory/
http://www.crucial.com
It is Important to get the Correct and Matching RAM
Those sites also have videos on how to Install RAM should you need it....

Several encrypted .dmg files show much more free space that the total size of the file.

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