Deleting BLOB columns doesn't return free space

After building a file upload/download app in HTMLDB, I found that the space doesn't seem to get released again after deleting a row from the upload table. Is there any specific purge procedure I must run, or any call to the DBMS_LOB package in order to get the space back?
I didn't find anything useful in the documentation (any documentation, not the HTMLDB docs ;-)).
Thanks in advance and a happy new year to everyone,
Holger

Hello Joel,
thanks for your reply. It's a custom table with following layout:
FILENAME VARCHAR2(4000),
DESCRIPTION VARCHAR2(4000),
ID NUMBER NOT NULL,
BLOB_CONTENT BLOB,
MIME_TYPE VARCHAR2(4000),
UPLOAD_DATE DATE
When I check the "Detaile Tablespace Utilization Report" in HTMLDB, I don't see a decrease of used space though a record with a large file has been deleted.
I followed the howto to create an upload/download application in HTMLDB and then added a page to be able to delete records...
Holger

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Delete blob column in source and rename schema using rule

Hi
I have blob column in source table, which i am deleting while capturing through rule based tranformation and also renaming the schema through the same rule.
SET SERVEROUTPUT ON
DECLARE
v_dml_rule VARCHAR2(80);
v_ddl_rule VARCHAR2(80);
BEGIN
DBMS_STREAMS_ADM.ADD_TABLE_RULES(
table_name => 'ENGINE.ACTIVATIONS',
streams_type => 'CAPTURE',
streams_name => 'CAPTURE_TO_&destsid',
queue_name => '&source_strmadmin_user..&sourcesid._TO_&destsid',
include_dml => true,
include_ddl => false,
include_tagged_lcr => false,
source_database => 'MMSTG.DEMOWORLD.COM',
dml_rule_name => v_dml_rule,
ddl_rule_name => v_ddl_rule,
and_condition => ':lcr.get_command_type() != ''DELETE''',
inclusion_rule => true);
DBMS_STREAMS_ADM.DELETE_COLUMN(
rule_name => v_dml_rule,
table_name => 'ENGINE.ACTIVATIOINS',
column_name => 'INSTANCE_DATA',
value_type => '*',
step_number => 0,
operation => 'ADD');
DBMS_STREAMS_ADM.RENAME_SCHEMA(
rule_name => v_dml_rule,
from_schema_name => 'ENGINE',
to_schema_name => 'ENGINE_WEST',
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DBMS_OUTPUT.PUT_LINE('Capture DML Rule for ENGINE.ACTIVATIOINS => ' || v_dml_rule);
END;
I use step_number 0 for both rename schema and delete column. Some how, delete column transformation is not firing and it replicates the blob column with some bytes instead of zero bytes.
How do we execute this both rule based transformation with correct step_number to fire both transformations. Please do let me know..
Thanks
Bala

In what version?
Step 0 is the default so that is not the issue.
Can you also post the DDL for your table and the results of the following query:
SELECT *
FROM dba_streams_unsupported
WHERE owner = <schema owner>
AND table_name = <your table name>;

Deleted files and pictures to open free space on HD. But, the file volume went to backups. I want to know how I could delete the backups. I have already did a back up on my time machine. Thanks

I have deleted pictures and files to free space on my mac book air. It did not free space and the backups file shows that even deting files it did not help.
Please let me know how to delete the files on backups folder.
Thank you,
Cristiane

Have you emptied your trash?
Finder Menu > Empty trash…
That will remove the items that were on the internal disk & were in the Trash.
What is the backup you are talking about? Is this a Time Machine backup?

Deleting Files in MacBookPro - Yosemite sending "FREE SPACE" to "Other"

I have the weirdest problem.
I'm running a Macbook Pro Late 2013 with OS X Yosemite 10.10.1.
The MAC came with a 500GB SSD Drive.
I have about 60GB of free space on my Mac. I need to restore a large file that is about 60GB.
So I thought to myself, "I'll just delete files I don't need".
I went ahead and deleted a parallels VM that was about 60GB in size. But I was shocked when I checked "About this Mac": no free space had been added!
I went ahead and did all the usual stuff. Empty trash, restart the MAC, repair permissions using "Disk Utility", restart the mac again, - but no matter what I did, I could not get the 60GB of free space from the file I had just deleted.
I downloaded OmniDisk Sweeper and Disk Doctor, but none of these applications where able to either get my 60GB back, or at least point me to where the 60GB has gone.
So I decided to disable my time machine. This usually gets rid of the backup cache. "About this Mac" showed that I would get about 50GB free space by doing this. After doing this, I was shocked to see that my free space had only changed negligibly - from 60GB to 64GB. Deleting 50GB of backups only added 4GB to my free space.
However during all of this, I noticed my "Other" data in "About this Mac" had grown considerably from about 90GB to about 206GB. It seems to me that all that space I have free'd up has somehow gone into the "Other" category instead of going to the "Free Space" category.
Please note my trash can is completely empty, and I have repaired permissions using Disk Utility at least twice with no effect.
I need to get my free space back so I can restore my virtual machine and get back to work.
Please help!!!

How much space does it say is available when you click on the HDD icon on your desktop COMMAND + I?
Hoe does this compare with OmniDiskSweeper?
You might have to reindex Spotlight if you are seeing inconsistent amounts.
Ciao.

Finder doesn't show free space after trashing.

Hi,
I would like to know Finder can show again free space ? I had a huge file that I putted in my trash. However after emptying the trash I didn't recover the disk space and I have still few free space... I wonder if there any solution to show that space again. So far I tried to shut down and restart, and also repair disk permission through disk utility. Unfortunately I have been unlucky till now.
Thanks for the further hints.
Guim

Hi G,
Try to boot in Single User Mode (hold CMD+S right after Power button) and follow instructions on screen for fsck and mount, redo the fsck and exit.
After that login and using you /Applications/Utilities/Terminal check folders size in general using du. Change work directory to the root (cd /) and use the command line "du -h -d1".
You will get some clue about, you can change the depth using -d2, -d3 and on. You can change the work directory using cd /Path/to/Folder and use the du -h -d1 (or other depth).
If you find the 100GB folder drop a line.
Good luck.
Also you will like to use the "sudo du -h -d1 -x" as without sudo some directories are not included and without -x the task is interrupted traversing mounting points in /dev
Message was edited by: KXsig

Should I Delete Old or Empty Catalogs to Free Space on Hard Drive?

Somehow I ended up with three catalogs in LR 4 -- Catalog.lrcat, Catalog-2.lrcat and Catalog-3.lrcat. My original catalog in LR3 was Catalog.lrcat. When I upgraded to LR4, Catalog-2.lrcat was created, and this is the catalog that I use. I'm not sure how Catalog-3 was created, but all of the images are grayed out and have question marks on them.
I would like to free up some space on my hard drive by getting rid of -- deleting -- Catalog (104MB) and Catalog-3 (103MB). Is this not recommended? And exactly how do I go about deleting a catalog?

Here's one way to do it (year-by-year archives):
* select the year's photos
* choose export as catalog:
export to whereever you'd like to keep such stuff.
Here's another way:
* simply copy your active catalog folder to whereever you'd like to keep such stuff (exit Lightroom first).
The first way, you'll have multiple archive catalogs, one for each year. You'd never fall back to one of these, but you may import from them.
The second way, you'll also have multiple catalogs, each will be bigger by amount added since last archive... Again, you are unlikely to fall back to one of these, but you could, especially if you save xmp too, in which case you could recover most work by falling back to most recent archive catalog and read xmp metadata for all photos edited since then.
Different folks like different strokes - if you invent another scheme you prefer - do share it. For example you may want to archive just the lrcat file (e.g. as backed up by Lr), or maybe the whole cat folder (except for previews). Also, you may want to archive other user files too, e.g. as backed up by "Aux Backup" plugin. Note: if you use the first approach, you can backup photo source files in with the archived catalog (which is one reason I recommend it - a catalog with no photo files is about as much fun as a dead puppy...). If you use the second approach, you'll need a different plan for saving associated master image files (lest your archived storage grow like streganona's spaghetti pot ;-}).
Hope this helps,
Rob

Why when i delete photos and movies do i not get the free space back on my hard drive?

I'm desparately trying to free up hard drive space. I have deleted unwanted photos and videos, emptied iphoto trash, rebooted and emptied regular trash but there is no corresponding increase in available hard drive space! Please help or the Mac gets it!!

If you're using Time Machine to back up a portable Mac, some of the free space will be used to make local snapshots, which are backup copies of files you've recently deleted. The space occupied by local snapshots is reported as available by the Finder, and should be considered as such. In the Storage display of System Information, local snapshots are shown as "Backups." The snapshots are automatically deleted when they expire or when free space falls below a certain level. You ordinarily don't need to, and should not, delete local snapshots yourself.

OCFS2 Free space issue

Hello,
I have an Oracle 11gR2 RAC on two Oracle Linux 5 nodes. For storage I use a couple of OCFS2 partitions.
I have deleted a database using dbca and also have deleted the remaining files from shared partitions. When I consulted the free space with df I was surprised to see that the partitions appear to have a lot of used space even that there are no files on them. I've seen a similar behavior on a gpfs partition on AIX. Even that the database was closed and deleted (and lsof doesn't return anything), and I don't see how some files could be still opened, I rebooted both nodes (complete shutdown and start after both were down).
Now I see this:
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/dev/sde1 2.0G 283M 1.7G 15% /d02
/dev/sdj1 1.0G 91M 934M 9% /d03
[root@node1 bin]# cd /d01
[root@node1 d01]# ls -a
[root@node1 d01]#
How is it possible to have used space on those partitions even if they are empty?
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[root@node1 d01]# modinfo ocfs2
filename: /lib/modules/2.6.32-300.27.1.el5uek/kernel/fs/ocfs2/ocfs2.ko
license: GPL
author: Oracle
version: 1.6.3
description: OCFS2 1.6.3
srcversion: B8AF3035CE0F00B763D188F
depends: ocfs2_stackglue,ocfs2_nodemanager
vermagic: 2.6.32-300.27.1.el5uek SMP mod_unload modversions
Thanks.

fsck.ocfs2 -f /dev/iscsi/openfiler:disk01/part1
mount /dev/iscsi/openfiler:disk01/part1 /d01
Filesystem Size Used Avail Use% Mounted on
/dev/sdf1 4.0G *283M* 3.7G 8% /d01
It's the same.
Just to add, the partitions were formatted like this:
mkfs.ocfs2 -b 4K -C 32K -N 4 -L oracrsfiles /dev/iscsi/crs/part1
/etc/fstab:
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How to store PDF file in BLOB column without using indirect datastore

Hi ,
I want to store a pdf file in a BLOB column.
But , it should be a direct store. I cannot usre indirect datastore.
BLOB column doesn't support indirect datastore. I get the following error.
ERROR at line 1:
ORA-29855: error occurred in the execution of ODCIINDEXCREATE routine
ORA-20000: Oracle Text error:
DRG-10581: indirect datastores cannot be used with long or lob text columns
ORA-06512: at "CTXSYS.DRUE", line 160
ORA-06512: at "CTXSYS.TEXTINDEXMETHODS", line 365
can anyone give me any clue onhow to manage this issue?

Thanks This really helped.
For other readers, I am summarising what I did.
create table test
id number primary key,
docs BLOB
create or replace directory doc_loc
as 'c:\test';
CREATE OR REPLACE PROCEDURE Load_BLOB_From_File (file_name in varchar2)
AS
src_loc bfile:= bfilename('DOC_LOC',Load_BLOB_From_File.file_name);
dest_loc BLOB;
begin
insert into tkctsf15t values(1,empty_blob()) returning docs
into dest_loc;
dbms_lob.open(src_loc,DBMS_LOB.LOB_READONLY);
DBMS_LOB.OPEN(dest_loc, DBMS_LOB.LOB_READWRITE);
DBMS_LOB.LOADFROMFILE(
dest_lob => dest_loc
,src_lob => src_loc
,amount => DBMS_LOB.getLength(src_loc));
DBMS_LOB.CLOSE(dest_loc);
DBMS_LOB.CLOSE(src_loc);
COMMIT;
end;
show errors;
exec Load_BLOB_From_File('test.pdf');
exec ctx_ddl.create_preference('mylex','BASIC_LEXER');
create index testx on test(docs) indextype is ctxsys.context
parameters
('filter ctxsys.AUTO_FILTER LEXER mylex ');
select id from test where contains(docs,'patch')>0;
Thanks Roger once more

Problem full-text in blob column index created using Oracle Text

Hi,
I'm running Oracle Database 10g 10.2 on solaris
I configure Oracle text if i look for in a varchar2 column is ok, but with blob column doesn't works the search.
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My index scripts is:
CREATE INDEX ORAUCM.FT_IDCCOLL1 ON ORAUCM.IDCCOLL1
(DDOCFULLTEXT)
INDEXTYPE IS CTXSYS.CONTEXT
PARAMETERS('DATASTORE CTXSYS.DEFAULT_DATASTORE FILTER CTXSYS.AUTO_FILTER FORMAT COLUMN DFULLTEXTFORMAT CHARSET
COLUMN DFULLTEXTCHARSET LEXER OCS_IDCCOLL1_LEXER SYNC (ON COMMIT)')
NOPARALLEL;
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dDocAccount, dRevLabel, dFormat, dOriginalName, dExtension, dWebExtension, dInDate, dOutDate,
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FROM IdcColl1, DocMeta
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Thanks in advance.

Thank you for your answer.
I response your question:
- yes DDOCFULLTEXT is a BLOB column.
- The document that word, excels, whatever. We load the document with UCM (universal Content Management)
because i need full-test search form UCM tool.
- Yes 'subir' containts in the word document.
- select * from CTX_USER_INDEX_ERRORS ;
No rows returned.
- SELECT TOKEN_TEXT FROM DR$FT_IDCCOLL1$I
No rows returned.
- I tried create symplifying index and doen't work.
I tried create table and index context on oracle 10.2.0.3 (test database)and works ok.
I compared both context (test database and ucm database) and i saw a difference:
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BEGIN ctx_ddl.create_preference('ORAUCM.', 'WORLD_LEXER'); end;
BEGIN ctx_ddl.create_preference('ORAUCM.', 'DETAIL_DATASTORE'); end;
I don't know if is important diference or no.
Please if you need more information, tell me.
Thanks for your time.

Can't use 7GB of free space i DO have! what a mess!

hi, im having a quite serious problem with my external HDD. it seems that i lost 7 GB of free space. i dont know how to get them back.
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For older Macs that aren't supported in Firefox 4.0, try TenFourFox for PowerPC's running Mac 10.4.11 & 10.5.8 . <br />
http://www.floodgap.com/software/tenfourfox/
Or you can revert to 3.6.16. <br />
http://www.mozilla.com/en-US/firefox/all-older.html

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.

HT6114 how to free space on mac

Please help

Empty the Trash if you haven't already done so. If you use iPhoto, empty its internal Trash first:
iPhoto ▹ Empty Trash
Do the same in other applications, such as Aperture, that have an internal Trash feature. Then reboot. That will temporarily free up some space.
According to Apple documentation, you need at least 9 GB of available space on the startup volume (as shown in the Finder Info window) for normal operation. You also need enough space left over to allow for growth of the data. There is little or no performance advantage to having more available space than the minimum Apple recommends. Available storage space that you'll never use is wasted space.
When Time Machine backs up a portable Mac, some of the free space will be used to make local snapshots, which are backup copies of recently deleted files. The space occupied by local snapshots is reported as available by the Finder, and should be considered as such. In the Storage display of System Information, local snapshots are shown as Backups. The snapshots are automatically deleted when they expire or when free space falls below a certain level. You ordinarily don't need to, and should not, delete local snapshots yourself. If you followed bad advice to disable local snapshots by running a shell command, you may have ended up with a lot of data in the Other category. Reboot and it should go away.
See this support article for some simple ways to free up storage space.
You can more effectively use a tool such as OmniDiskSweeper (ODS) or GrandPerspective (GP) to explore the volume and find out what's taking up the space. You can also delete files with it, but don't do that unless you're sure that you know what you're deleting and that all data is safely backed up. That means you have multiple backups, not just one. Note that ODS only works with OS X 10.8 or later. If you're running an older OS version, use GP.
Deleting files inside an iPhoto or Aperture library will corrupt the library. Any changes to a photo library must be made from within the application that created it. The same goes for Mail files.
Proceed further only if the problem isn't solved by the above steps.
ODS or GP can't see the whole filesystem when you run it just by double-clicking; it only sees files that you have permission to read. To see everything, you have to run it as root.
Back up all data now.
If you have more than one user account, make sure you're logged in as an administrator. The administrator account is the one that was created automatically when you first set up the computer.
Install the app you downloaded in the Applications folder as usual. Quit it if it's running.
Triple-click anywhere in the corresponding line of text below on this page to select it, then copy the selected text to the Clipboard by pressing the key combination command-C:
sudo /Applications/OmniDiskSweeper.app/Contents/MacOS/OmniDiskSweeper
sudo /Applications/GrandPerspective.app/Contents/MacOS/GrandPerspective
Launch the built-in Terminal application in any of the following ways:
☞ Enter the first few letters of its name into a Spotlight search. Select it in the results (it should be at the top.)
☞ In the Finder, select Go ▹ Utilities from the menu bar, or press the key combination shift-command-U. The application is in the folder that opens.
☞ Open LaunchPad. Click Utilities, then Terminal in the icon grid.
Paste into the Terminal window (command-V). You'll be prompted for your login password, which won't be displayed when you type it. You may get a one-time warning to be careful. If you see a message that your username "is not in the sudoers file," then you're not logged in as an administrator.
The application window will open, eventually showing all files in all folders, sorted by size. It may take a few minutes for the app to finish scanning.
I don't recommend that you make a habit of doing this. Don't delete anything as root. If something needs to be deleted, make sure you know what it is and how it got there, and then delete it by other, safer, means. When in doubt, leave it alone or ask for guidance.
When you're done with the app, quit it and also quit Terminal.

Erased free space in Disk Utility, and after it finished it kept a DMG there.

I erased free space in Disk Utility, and after it finished it kept a DMG there called "DeveloperDiskImage.dmg", why is it left behind? can it be deleted? how? if erasing free space is supposed to help get memory and remove all the files truly, it shouldnt be creating anything, it created a DMG at the start, but it went away, after a hour and a half it made the DeveloperDiskImage, i went to eat dinner and when i came back it was done but that was left.

Delete it. Erasing the free space isn't supposed to free up any space; it's there in case someone deleted a file insecurely when they meant to securely delete it.
(65417)

My start up disc is full i have a macbook air, i back everuthing up with time capsule and have movies all my music libraries and photos onto that too so as i have free space, but my max still says my startup disc is full with "other"

my start up disc is full i have a macbook air, i back everuthing up with time capsule and have movies all my music libraries and photos onto that too so as i have free space, but my max still says my startup disc is full with "other"

First, empty the Trash if you haven't already done so. Then reboot. That will temporarily free up some space.
According to Apple documentation, you need at least 9 GB of available space on the startup volume (as shown in the Finder Info window) for normal operation. You also need enough space left over to allow for growth of your data. There is little or no performance advantage to having more available space than the minimum Apple recommends. Available storage space that you'll never use is wasted space.
If you're using Time Machine to back up a portable Mac, some of the available space will be used to make local snapshots, which are backup copies of files you've recently deleted. The space occupied by local snapshots is reported as available by the Finder, and should be considered as such. In the Storage display of System Information, local snapshots are shown as "Backups." The snapshots are automatically deleted when they expire or when free space falls below a certain level. You ordinarily don't need to, and should not, delete local snapshots yourself.
To locate large files, you can use Spotlight as described here. That method may not find large folders that contain a lot of small files.
You can also use a tool such as OmniDiskSweeper (ODS) to explore your volume and find out what's taking up the space. You can delete files with it, but don't do that unless you're sure that you know what you're deleting and that all data is safely backed up. That means you have multiple backups, not just one.
Proceed further only if the problem hasn't been solved.
ODS can't see the whole filesystem when you run it just by double-clicking; it only sees files that you have permission to read. To see everything, you have to run it as root.
Back up all data now.
Install ODS in the Applications folder as usual.
Triple-click the line of text below to select it, then copy the selected text to the Clipboard (command-C):sudo /Applications/OmniDiskSweeper.app/Contents/MacOS/OmniDiskSweeper
Launch the Terminal application in any of the following ways:
☞ Enter the first few letters of its name into a Spotlight search. Select it in the results (it should be at the top.)
☞ In the Finder, select Go ▹ Utilities from the menu bar, or press the key combination shift-command-U. The application is in the folder that opens.
☞ Open LaunchPad. Click Utilities, then Terminal in the icon grid.
Paste into the Terminal window (command-V). You'll be prompted for your login password, which won't be displayed when you type it. You may get a one-time warning not to screw up. If you see a message that your username "is not in the sudoers file," then you're not logged in as an administrator.
I don't recommend that you make a habit of doing this. Don't delete anything while running ODS as root. If something needs to be deleted, make sure you know what it is and how it got there, and then delete it by other, safer, means.
When you're done with ODS, quit it and also quit Terminal.

Deleting BLOB columns doesn't return free space

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