Undoing insignoficant edits

Hi,
I'm working with the undo/redo manager, and i've got an issue with significant edits.
Basically, if I:
1) do say 10 edits.
2) hit undo 5 times.
3) create an insignificant edit (basically right now I'm using a text editor, so any changes to the cursor creates an insignificant edit).
Now I loose the forward history in the undoable edit, and I can't execute a redo command. This is obviously wrong behaviour, so I'm guessing I'm not the first person who's come across this issue. Is there a standard way of implementing this? Should I be not using insignificant edits at all?
any help much appreciated,
Justin

sorry, an insignificant edit as in an edit that returns false from the method UndoableEdit.isSignificant()
so in order to restore the position of the caret in my text editor after a user clicks undo, I fire a "CaretMovedEdit" event everytime the caret position changes. But - when an event is fired to the undo manager, the manager clears all edits after that particular edit was added.
I'm only using moving the caret as an example. the application i'm working on is a little more involved than just having a caret state, but its the same general principal.
thanks,
J

Similar Messages

How to Undo An edit further?

Hello,
Today I was editing my project and found that after editing all day, most of my edit was deleted in about 30 minutes. I can't find any autosaves from earlier than a few days ago.
I'm practically in tears after losing all this work on my timeline. I must have accidentally deleted it but was more than I could go back on the undos. Only a few clips remain in the area preceding where I was cutting some raw footage.... I closed the file and did not save, but it looks like I can't find any auto saves in the last hour or so. What can I do?

Hi Joseph,
Transport all the objects you want in the order again with a new request. This will replace all the transported objects and you will get all the objects transported.
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Undoing text editing in FCP5

Since moving to FCP5 we have noticed peculiar behaviour in text editing. Undo deletes all text in the window and it can't be restored. Does anybody know if this is preference related or is this the way Apple in its wisdom has decided it should work?

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Or just extend the opening clip all the way to the end. For example, move the opening clip up to the next higher video track. Drag the end as far as you want and then move it down on top of all the "bad" edits.

Undo last edit w/ Multiclip

Is there anyway to easly un-do only the last edit I made with multiclip.
Hitting undo dumps all edits I made from space-bar to space-bar.
It probably doesn't exist, but it's worth a shot.

Drew Mark wrote:
So I have a newsletter that I create once a month. Instead of recreating from scratch each month, I duplicate the file and edit the duplicate. I'm guessing this is pretty standard practice for most.
It's also a recipe for incremental corruption buildup that will eventually kill the file. I'm not saying that's what your problem is -- we usually see total file failure with this kind of workflow, but it's a habit you should change. Repeating publications should be made from a template, with each issue starting from a fresh copy of the template.
That said, there are some bugs related to undo in CC, apparently. What version are you using?

Only Undo/Redo Editing but No Syntax Highlighting

I have a JTextPane with styled content, when I apply undo/redo I don't want the different Color Highlighting to be added to Undo/Redo queue of UndoManager. How can I? My Undo Listener and Actions looks like below:
protected class RulesUndoableEditListener implements UndoableEditListener {
          RuleExpressionUndo undoAction;
          RedoRuleExpression redoAction;
          UndoManager undoMgr;
          public RulesUndoableEditListener(RuleExpressionUndo undoAction,
                    RedoRuleExpression redoAction, UndoManager undoMgr)
               this.undoAction = undoAction;
               this.redoAction = redoAction;
               this.undoMgr = undoMgr;
          public void undoableEditHappened(UndoableEditEvent e) {
                    undoMgr.addEdit(e.getEdit());
                    undoAction.updateUndoState();
                    redoAction.updateRedoState();
class RuleExpressionUndo extends AbstractAction {
          RedoRuleExpression redoAction;
          UndoManager undo;
        public RuleExpressionUndo(UndoManager undo) {
            super("Undo");
            this.undo = undo;
            setEnabled(false);
        public void actionPerformed(ActionEvent e) {
            try {
                undo.undo();
            } catch (CannotUndoException ex) {
                System.out.println("Unable to undo: " + ex);
                ex.printStackTrace();
            updateUndoState();
            redoAction.updateRedoState();
        protected void updateUndoState() {
            if (undo.canUndo()) {
                setEnabled(true);
                putValue(Action.NAME, undo.getUndoPresentationName());
            } else {
                setEnabled(false);
                putValue(Action.NAME, "Undo");
           * @param redoAction the redoAction to set
          public void setRedoAction(RedoRuleExpression redoAction)
               this.redoAction = redoAction;
    class RedoRuleExpression extends AbstractAction {
         RuleExpressionUndo undoAction;
         UndoManager undo;
        public RedoRuleExpression(UndoManager undo) {
            super("Redo");
            this.undo = undo;
            setEnabled(false);
        public void actionPerformed(ActionEvent e) {
            try {
                undo.redo();
            } catch (CannotRedoException ex) {
                System.out.println("Unable to redo: " + ex);
                ex.printStackTrace();
            updateRedoState();
            undoAction.updateUndoState();
        protected void updateRedoState() {
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                setEnabled(true);
                putValue(Action.NAME, undo.getRedoPresentationName());
            } else {
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                putValue(Action.NAME, "Redo");
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               this.undoAction = undoAction;
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I believe that in the undoableEditHappened() method you can add code like thefollowing:
AbstractDocument.DefaultDocumentEvent event =
     (AbstractDocument.DefaultDocumentEvent)e.getEdit();
if (event.getType().equals(DocumentEvent.EventType.CHANGE))
     // attribute change - do nothing
else
     undoMgr.addEdit(e.getEdit());
     undoAction.updateUndoState();
     redoAction.updateRedoState();
}

Forms editing and undos

Acrobat 8 Pro, OS X 10.5.7
Acrobat does not appear to able to undo an action when editing forms. A co-worker is working on a multipage form that was created in ID and exported to PDF. In Acrobat, she is creating form fields. Inadvertently, she has selected all of the fields and deleted them with no option to undo that last action.
I've checked Acrobats preferences and there does not appear to be an option to edit the number of undo's.
Can Acrobat undo actions when editing form fields?
Thanks.

PjonesCET wrote:
If she closed the file she had to save the changes to retain them. That's what I was trying to get at once you save a File, you have the changes and they can never be undone.
Oh Phillip. Do you really think no one reads your posts? You mention no such thing in post #3 or any of your following posts.
Do you need new oars so you can backpaddle?
Here are your posts:
PjonesCET wrote:
It appears the person save the changes once changes are save there are no undo. That;s the reason I suggested making a Backup of a document before making any major changes. I know of no application that once you do a save or save as can go back and undo anything.
PjonesCET wrote:
Maybe I am not saying right. I know of no application once you save a Document, that will allow you to undo an edit.
PjonesCET wrote:
If you still don't understand I give up. Once saved a document, when you go to edit menu and undo its unavailable (Grayed out), not active.
(sorry folks. I don't mean to stir things up in your thread but PJ has a tendency to spread misinformation all over the place. I just think it's good to call him on it when it happens.)

FAQ: How do I edit photos in Revel?

Start by installing Adobe Revel to your iPhone, iPad, Mac, or Android device. Tell family and friends who will be
viewing your Adobe Revel photos to install the apps, too.
When you're sharing photos with friends and family, you want them to look their best so that everyone gets to experience and enjoy the moment as much as you did. That’s why we built intuitive and powerful editing tools right into Revel. Make every moment look exactly how you want to remember it with ease.
Editing Photos in Revel
You can edit a photo on your Mac, iPad, or iPhone using Adobe Revel. Changes are saved to your photo library, so
the photo looks the same on any device. The Revel cloud keeps a copy of your full res originals. Edits in revel are non-destructive, so your original is always preserved (unedited). When you export photo (MAC) Save to Camera Roll (iOS), that's when Revel applies your edits. On iOS the preview is used. on MAC the full resolution of the original is used to generate the new edited photo.
Add adjustments to your photos
Go to the photo you wish to edit.
Click on the +- Edit button on the bottom center of the page on the iPad or the iPhone.
Select a preset adjustment look or adjust red eye, crop, or rotate.
With Revel’s intuitive and powerful editing tools, it’s lots of fun to make your photos look better. Crop and use one-touch filters to get professional results with ease, or use the adjustment sliders when you want to experiment with lighting, color, and sharpness.
Use the crop and red-eye removal tools help you create the perfect memory by eliminating unwanted parts of a photo. And when you have a special memory, use the advanced controls in Revel to give it a look all your own.
Edits you make to a photo appear when you view the photo on any device. Because Adobe Revel saves the edits as separate instructions rather than as changes to the original photo, you can always undo any edits you've made. For example, you can select a black-and-white look, and then if you change your mind, tap or click Undo. If you make a series of edits and then change your mind, tap or click Cancel.
To improve lighting or contrast, tap or click Adjustments. Drag the White Balance, Exposure, and Contrast sliders to achieve the effect you want. Tap or click the two-way arrows (see image below) for additional sliders that give you finer control
Looks: Turn a photo into an amazing photo with a single tap. With 24 different photo filters it's easy to create a photo that will impress your friends and family.
Adjustments: Use the advanced controls to adjust the color, lighting, and sharpness of your photos.
White Balance: Adjust the temperature & tint
Exposure: Corrects the exposure, highlight & shadow
Contrast: Adjust the contrast, clarity & vibrance
When clicking on "Compare", you can see the before and after preview of the changes that you made. If you want to reset your changes back to
the original image, just click "Undo"
iPhone Users: There is an "undo" button and "compare" button so you can see the before and after result for adding an adjustment to your image.
Red Eye
Using Revels Red Eye removal is easy. Just click on the "Auto Detect & Correct" or click on the persons eyes in your image as Revel will automatically correct the red eyes.
Crop & Rotate
Crop: To remove unwanted areas of the photo, tap or click Crop & Rotate. Drag a corner or side of the frame to resize it. Drag the photo itself to reposition it. Pinch your fingers open to zoom in on the photo within the frame.
Rotate: To rotate the photo, tap or click Crop & Rotate. Then, tap or click the Rotate Left or Rotate Right icon; or tap or click the Flip Horizontal or Flip Vertical icon.
Actions Menu
Add Photo to Album: Add your photo to a new album or existing album in your library
Export Current Version: Exports the current version of the image that you have applied any adjustments to
Export Original: Exports the original image with out any adjustments applied.
Duplicate Photo: Duplicates the photo & stores the image in the same library.
Copy to Clipboard: This will copy the image to your computers clipboard, then you can paste your image into various applications like Elements 11
Iphone Users: You can share your photos via e-mail or upload your images directly to Facebook, Flickr, Twitter & Tumblr.
Actions Menu
Add Photo to Album: Add your photo to a new album or existing album in your library
Save Current to cameral roll: Exports the current version of the image that you have applied any adjustments to
Save Original to cameral roll: Exports the original image with out any adjustments applied.
Storing your original photos When you import a photo, Adobe Revel uploads a copy of the original to the cloud.
By default, Adobe Revel also stores a copy of the original on your computer in /Pictures/Adobe Revel Library
The files are stored in a "package" titled Adobe Revel Library. Control click on the package and select "Show Package Contents" from the menu. Then you will be able to view the images in the finder window.
Favorites
When working with a single photo, click on the "STAR" to mark your photo as a favorite. The image will show with a star under the "Favorites" in your Revel library.
Add captions to your photos
Create lasting memories by preserving all the info and details related to each of your photos.
Deleting photos
Be careful! Deleting a photo removes it from Revel on all your devices, not just the one you're working on. Make sure you really don't want the photo anymore before you delete it.
For example: If you delete the image on your phone or iPad, the image will also be deleted from the Adobe Revel Library in the /Pictures/Adobe Revel Library directory on your computer. Its always a good practice to back up your images to a location on your hard drive.

Please study this, then come back with more specific questions
Learn Photoshop Elements 12 | Adobe TV
Learn Photoshop Elements | Adobe TV
Use of the tools is pretty much the same in all versions of the program.
"Edit" is a menu item in Photoshop Elements Editor. Don't you see this?

Camera Raw edits are permanent in layered file, therefore "destructive"

I use scanned 35mm TIFF files and DNG digital files, converted from Nikon NEF files. I edit in Photoshop CS3. I use adjustment layers in Photoshop to retain the ability to revise as needed (the "nondestructive" route). To date I have used Camera Raw sparingly due to the fact that I cannot effectively change those edits once the file is converted to a layered PSD file. I say "effectively" because I guess it would be possible to reconstruct the file by editing the original DNG file containing the Camera Raw edits and add the layers added in Photoshop (some of the layers would probably not transfer effectively, e.g. spotting layers). However I do not think that that is a viable procedure.
Much is made of the nondestructive nature of Camera Raw edits. However, this appears to me to be illusory since one cannot open the layered file in Camera Raw. Among other books I have read the Fraser/Schewe books on Camera Raw and sharpening. The advice contained in those books are, in part, directly contradictory, i.e. they advise (1) to make all possible edits in Camera Raw since the edits are "nondestructive" and essential to obtaining the best quality file; and (2) always doing sharpening, except for any capture sharpening done in Camera Raw, on a sharpening layer. Well, one cannot accomplish both of these objectives. Once the file is converted to the layered PSD file say goodbye to the opportunity to change the Camera Raw edits.
So my questions are: 1. Have I missed something? Am I wrong about the inability to change the Camera Raw edits after the file is made into a layered PSD? If there is an effective way to do this, how do I do it? 2. What is your workflow for preserving the ability to undo your edits and how do you balance the workflow between Camera Raw and Photoshop? I find it a bit frustrating that the experts write these books, advocating the glory of nondestructive edits but fail to even comment on the fact that that ability disappears the moment a layer is added in Photoshop (an editing step they also insist is absolutely essential).
I will appreciate any assistance you are able to offer.

Please read carefully:
1. NOTHING is "destructive" if you do not save over your original file.
2. Bearing in mind #1 above, there is no evil in developing input data into an image in which pixel values are set per the controls in Camera Raw. That's what Camera Raw does best!
Learning from others is great, but keep in mind sometimes people have an agenda in what they teach and "rules of thumb" like "avoid destructive edits like the plague" are developed to start you off in the right direction. I'm just saying use your common sense as well.
-Noel

Modify the way 'undo' works

Start a fresh database, import 3 images and go the the Develop module. Move the Temperature slider of the first image far to the right, the Temperature slider of the second image far to the left and the Exposure slider of the third image far to the right. Now select the second image and press CMD/CTRL-z to 'undo'. What happens is, I believe, a bug: The Exposure of the *third* image is returned to its original position but the second image is the one being displayed.

I tend to ignore Undo other than for undoing *immediate* actions, simply because I can't be sure of what will happen.
In other words, if I am dragging sliders around on a specific image and realize I don't like the results, I'll use Ctrl+Z to get back to where I was quickly. But if I'm looking at an image I edited even a day ago and I want to revert past actions, I'll ALWAYS use the history so that I can see exactly what I'm doing. If I were to use Ctrl+Z, there is always the chance that I will get confused on my past sequence of events and end up undoing an edit that I didn't want to undo, without seeing its effect.
Given this, I'd actually prefer it if Ctrl+Z only undid actions to the current selected image(s) SINCE SWITCHING TO THOSE IMAGES. This would prevent it from ever undoing actions to other images without my being aware of it. Basically, it would be a built-in safety valve, forcibly requiring me to use the more deliberative History approach when I want to undo changes to other images.
But this is just the way I tend to work. I'm not sure anyone would agree with me, or that this would ever be a sensible default behaviour, though.
As a more general approach (although it's not my preferred implementation), I think Undo should only work in cases where the user can see its effect. This means only undoing the current or selected set of images. Undoing "other" images means that its effect may be invisible, and I don't think that's desirable.

Music Editing with Audio Hijack or WireTap

WireTap Pro vs. Audio Hijack with Fission for one simple editing task
I have a collection of about 500 pieces of classical music in iTunes and on my iPod and iPhone. Some recordings come with adequate fade-out or decay time at the end of each piece of music (or each movement), some with little or none. I would like to get into my iTunes library and extend the fade-out silence at the end of each piece to a time that better suits my ear -- adding perhaps 10-15 seconds before the next piece of music starts if I have the iPod set for "shuffle." I'm not wanting to edit sound out...I'm just wanting to extend or append a silence. Are either of these program well-suited to that task? Any glitches I should be aware of? If both can do what I need is there any reason to favor one or the other?

I use Fission for such tasks - I've never tried WireTap.
Audio Hijack is for recording internet streams or other sound coming through your computer. It's for making new recordings - you don't need it if all you're doing is the sound editing like you mention.
With Fission, you can fade a song out or in, and do some other sound editing, like splitting a piece into two. It's not for making real minute cuts or real fine tuning, but it works well for simple editing.
For adding silence, it's pretty straightforward - you move the playhead to the end of the track (in your case), and there's a menu item (under the 'clip' menu, I think, that's called "insert silence". Then a counter comes up and you can tell it how much silence you want, and it will add it at the playhead. It does it as a separate track, though, with a 'split' in between. So the next step is in the edit menu, 'remove all splits' (or you can do it manually).
Then you can save the file - if you 'replace' the old file with the new one, you're done, and the new file overwrites the old one. If you give the new track a different name, then you have to navigate to the folder it's in and double-click to import it into iTunes, where it will have the same name (in iTunes) as the old track, even if you saved it under a different name. You can change the metadata for the track before saving, to avoid that.
But I just add silence and then overwrite the old track, so it's gone from iTunes, and the new one is there.
It can be a little tedious to do several tracks (one at a time). No real glitches - sometimes when messing with a track too much, there can be a 'popping' sound added, but it's rare and easily fixed by undoing the editing. You have to undo it one step at a time, but you can undo it every step back to the beginning.
Also, Fission works on all types of sound files without transcoding - Apple Lossless, AIFF, mp3, AAC - it doesn't change the file format (unless you ask it to convert the file).
Maybe somebody will post about WireTap Pro - I assume it can do the same things, but I've never seen the interface.

Problem in Editing Bitmap

I pasted an image which is actually a screenshot into flash
and converted it into a symbol. When I try to edit it as it resets
and goes back to its original state. eg.
when Im trying to edit the bitmap with an eraser I keep erasing
and as soon as I remove the mouse click, it just undoes the
editing.
Please help me!

A keyframe for each on the same layer (sorry if my use of the
word frame threw you off).
You may find that you need to allow a couple of 'frames' for
each 'keyframe'... otherwise the action may appear like hitting a
fast forward button.... meaning, draw a position in one keyframe,
then skip a frame or two before you insert the next keyframe for
the next position.
Another approach could be in the way of using motion tweens
between keyframes, in which case each movable part of the body is a
symbol implemented on a layer by itself. This would yield more
fluid motion, but can sometimes turn on you and require special
taming between keyframes.

BUGS: Multiple Undos with Single CMD-Z (and other buggy tales)

BUG #1:
In the SIDs thread (now locked) I said in response to Logic Pro Help, "Hey, after all, Logic ain't that bad". Today I've changed my mind.
In full view of my writing partner, we witnessed numerous times that Logic would undo multiple edits after hitting CMD-Z just once. I've reported this in numerous other threads I've started here on the Apple Forum. I've posted Feedback about it. Naturally, there's been no response from the company.
BUG#2a: we tried to troubleshoot why certain SMPTE-locked regions would unlock (using a key command) and other locked regions on the same MIDI track would unlock.
BUG#2b: while checking to see whether my key command for Unlock SMPTE Position was still intact or not, I went to the key command window and hit cntrl-opt-cmd-U (custom assignment) expecting that the assigned command would scroll into view in the KC window. But I should have known better --- this is one of those key combinations which will NOT cause the assigned command to scroll into view. Sure enough, entering the word "SMPTE" in the search window caused the display to show the Unlock SMPTE Postion command. So why does pressing some keys/key combinations in the KC window show the assigned command while some do not?
And we're supposed to be OK with this kind of behavior?

Hey Cozmicone,
Yes I have done that - I mapped CMD + Z but that kind of gets in the way of years of habit and is a bit frustrating and confusing when you're working quick etc...
It does work fine doing that (I have just uninstalled 3 versions of Photoshop and reinstalled CC 2014 and still no multiple undos on OPT + CMD + Z?! It's like it won't accept the key combination because if you go into map back to OPT + CMD + Z after changing it to CMD + Z it won't let you. You have to revert to default to even get that option back. C'est bizarre...non?

Undo表空间收缩问题!

RT，数据库平台为11.2.0.1 OS平台为centos5.8 64位
目前undo表空间大小超过10G，从em中查看undo表空间的实际使用量为300M左右，所以想对undo表空间数据文件进行收缩！
SQL> select sum(bytes)/(1024*1024) from dba_undo_extents where status !='EXPIRED';
SUM(BYTES)/(1024*1024)
195.1875
SQL> show parameter undo
NAME TYPE VALUE
undo_management string AUTO
undo_retention integer 900
undo_tablespace string UNDOTBS1
SQL> SELECT FILE_NAME FROM DBA_DATA_FILES WHERE TABLESPACE_NAME='UNDOTBS1';
FILE_NAME
/u01/app/oracle/oradata/orcl/undotbs01.dbf
SQL> !du -sh /u01/app/oracle/oradata/fjhb/undotbs01.dbf
11G /u01/app/oracle/oradata/orcl/undotbs01.dbf
SQL> alter database datafile '/u01/app/oracle/oradata/orcl/undotbs01.dbf' resize 5G;
alter database datafile '/u01/app/oracle/oradata/orcl/undotbs01.dbf' resize 5G
ERROR at line 1:
ORA-03297: file contains used data beyond requested RESIZE value
猜想大概是因为目前使用的undo段位于数据文件5G之后的数据块中，才导致无法收缩的情况，请问这种情况下要如何对undo表空间数据文件进行收缩呢？
临时表空间也存在这种问题，一般的解决方法都是新建一个临时表空间或者undo表空间，然后切换，是否有其他的手段实现呢？求解，TKS
Edited by: user13616200 on 2012-10-24 下午8:04
Edited by: user13616200 on 2012-10-24 下午8:05

一般来说我们仍推荐使用重建UNDO TABLESPACE的方法，而不推荐收缩UNDO表空间的数据文件，具体可以参考文档：
How to Shrink the datafile of Undo Tablespace [ID 268870.1]
下面提供一个例子使用 smudebug_mode 在AUM自动UNDO管理模式下可以手动操作ROLLBACK SEGMENT， DROP ROLLBACK SEGMENT并下降UNDO DATAFILE的 HWM:
SQL> select * from v$version;
BANNER
Oracle Database 11g Enterprise Edition Release 11.2.0.3.0 - 64bit Production
PL/SQL Release 11.2.0.3.0 - Production
CORE    11.2.0.3.0      Production
TNS for Linux: Version 11.2.0.3.0 - Production
NLSRTL Version 11.2.0.3.0 - Production
SQL> select segment_name,(block_id+blocks-1)*8/1024 "MB" from dba_extents where tablespace_name='UNDOTBS1' order by BLOCK_ID
2 ;
SEGMENT_NAME                           MB
_SYSSMU1_1240252155$            1.0546875
_SYSSMU3_4004931649$            1.1171875
_SYSSMU2_111974964$             1.1796875
_SYSSMU11_658781855$            1.2421875
_SYSSMU3_4004931649$            1.3046875
_SYSSMU8_3612859353$            1.3671875
_SYSSMU4_1126976075$            1.4296875
_SYSSMU12_2501004885$           1.4921875
_SYSSMU5_4011504098$            1.5546875
_SYSSMU19_2180579991$           1.6171875
_SYSSMU6_3654194381$            1.6796875
_SYSSMU4_1126976075$            1.7421875
_SYSSMU7_4222772309$            1.8046875
_SYSSMU13_840218468$            1.8671875
_SYSSMU8_3612859353$            1.9296875
ROL1                            1.9921875
_SYSSMU9_3945653786$            2.0546875
ROL1                            2.1171875
_SYSSMU10_3271578125$           2.1796875
ROL2                            2.2421875
_SYSSMU14_2349236253$           2.3046875
_SYSSMU15_1111071581$           2.3671875
_SYSSMU33_827532347$            2.4296875
_SYSSMU16_2343055295$           2.4921875
ROL2                            2.5546875
_SYSSMU18_1944602643$           2.6171875
ROL3                            2.6796875
_SYSSMU9_3945653786$            2.7421875
_SYSSMU17_2053564160$           2.8046875
_SYSSMU13_840218468$            2.8671875
_SYSSMU20_799523511$            2.9296875
_SYSSMU32_717097254$            2.9921875
ROL3                            3.0546875
_SYSSMU31_3126164870$           3.1171875
_SYSSMU14_2349236253$           3.1796875
_SYSSMU32_717097254$            3.2421875
_SYSSMU5_4011504098$            3.3046875
_SYSSMU33_827532347$            3.3671875
_SYSSMU14_2349236253$           3.4296875
_SYSSMU14_2349236253$           3.4921875
_SYSSMU13_840218468$            3.5546875
_SYSSMU1_1240252155$            3.6171875
_SYSSMU14_2349236253$           3.7421875
_SYSSMU10_3271578125$           3.8046875
_SYSSMU27_3300739595$           4.0546875
_SYSSMU12_2501004885$           4.1171875
_SYSSMU14_2349236253$           4.2421875
_SYSSMU11_658781855$            4.3046875
_SYSSMU14_2349236253$           4.3671875
_SYSSMU7_4222772309$            4.5546875
_SYSSMU21_1329673384$           4.6171875
_SYSSMU21_1329673384$           4.6796875
_SYSSMU22_2337540263$           4.7421875
_SYSSMU22_2337540263$           4.8671875
_SYSSMU23_1882401082$           4.9296875
_SYSSMU6_3654194381$            5.1171875
_SYSSMU29_2315271841$           5.2421875
_SYSSMU30_4027581112$           5.3046875
_SYSSMU28_1041049599$           5.3671875
_SYSSMU31_3126164870$           5.4296875
_SYSSMU18_1944602643$           5.4921875
_SYSSMU15_1111071581$           5.6171875
_SYSSMU30_4027581112$           5.6796875
_SYSSMU24_537967391$            5.8046875
_SYSSMU2_111974964$             5.9296875
_SYSSMU24_537967391$            6.9921875
_SYSSMU26_668922729$            7.9921875
_SYSSMU24_537967391$            8.1171875
_SYSSMU25_4148647911$           8.2421875
_SYSSMU19_2180579991$           8.3046875
_SYSSMU26_668922729$            8.4296875
_SYSSMU26_668922729$            8.4921875
_SYSSMU27_3300739595$           8.5546875
_SYSSMU28_1041049599$           8.7421875
_SYSSMU29_2315271841$           8.8671875
_SYSSMU30_4027581112$           8.9921875
_SYSSMU31_3126164870$           9.9921875
_SYSSMU12_2501004885$          10.9921875
_SYSSMU8_3612859353$           11.9921875
_SYSSMU27_3300739595$          12.9921875
_SYSSMU33_827532347$           13.9921875
_SYSSMU11_658781855$           14.9921875
_SYSSMU15_1111071581$          15.9921875
_SYSSMU5_4011504098$           16.9921875
_SYSSMU9_3945653786$           17.9921875
_SYSSMU7_4222772309$           18.9921875
_SYSSMU22_2337540263$          19.9921875
_SYSSMU20_799523511$           20.9921875
_SYSSMU2_111974964$            21.9921875
_SYSSMU25_4148647911$          24.9921875
_SYSSMU16_2343055295$          25.1171875
_SYSSMU25_4148647911$          25.2421875
_SYSSMU3_4004931649$           26.9921875
_SYSSMU10_3271578125$          27.9921875
_SYSSMU1_1240252155$           28.9921875
_SYSSMU10_3271578125$          29.9921875
_SYSSMU7_4222772309$           31.9921875
_SYSSMU6_3654194381$           33.9921875
_SYSSMU29_2315271841$          34.9921875
_SYSSMU21_1329673384$          35.9921875
_SYSSMU17_2053564160$          36.1796875
_SYSSMU16_2343055295$          37.9921875
_SYSSMU23_1882401082$          38.1796875
_SYSSMU5_4011504098$           39.9921875
_SYSSMU9_3945653786$           40.9921875
_SYSSMU17_2053564160$          46.1171875
_SYSSMU2_111974964$            47.9921875
_SYSSMU1_1240252155$           48.9921875
_SYSSMU7_4222772309$           49.9921875
_SYSSMU2_111974964$            54.9921875
_SYSSMU9_3945653786$           56.9921875
_SYSSMU3_4004931649$           57.9921875
_SYSSMU6_3654194381$           58.9921875
_SYSSMU5_4011504098$           59.9921875
_SYSSMU4_1126976075$           61.9921875
_SYSSMU4_1126976075$           68.9921875
_SYSSMU8_3612859353$           69.9921875
117 rows selected.
1* select file_name from dba_data_files where tablespace_name='UNDOTBS1'
SQL> /
FILE_NAME
+DATA/proda/datafile/undotbs1.258.794669839
SQL> alter database datafile '+DATA/proda/datafile/undotbs1.258.794669839' resize 70M;
Database altered.
SQL> alter database datafile '+DATA/proda/datafile/undotbs1.258.794669839' resize 69M;
alter database datafile '+DATA/proda/datafile/undotbs1.258.794669839' resize 69M
ERROR at line 1:
ORA-03297: file contains used data beyond requested RESIZE value
SQL> alter system set "_smu_debug_mode"=4;
System altered.
SQL> alter rollback segment "_SYSSMU8_3612859353$" offline;
Rollback segment altered.
SQL> drop rollback segment "_SYSSMU8_3612859353$";
Rollback segment dropped.
SQL> select max(block_id+blocks-1)*8/1024 "MB" from dba_extents where tablespace_name='UNDOTBS1';
        MB
68.9921875
SQL> alter database datafile '+DATA/proda/datafile/undotbs1.258.794669839' resize 69M;
Database altered.如以上例子通过 "_smu_debug_mode"=4; 后 offline 、 drop rollback segment 实现对UNDO DATAFILE的RESIZE。
建议该类操作不要在高并发的情况下做，一般找一个空闲的时间来操作。
*<font color="red" size="2" face="courier">如果觉得本回复有意义，请点击本条回复右手边的Correct按钮，谢谢！</font>*
如何在OTN中文技术论坛提一个问题？
论坛礼仪需知及学习oracle的方法论
Maclean Liu
Oracle Database Administrator
Oracle Certified 10g/11g Master
www.askmaclean.com

LR 2 - how to undo changes after unselecting picture?

Hi,
I do a bunch of edits on picture A. Then, I go to picture B and do some edits. Then, when I go back to Picture A and decide to change it, I don't see any option to undo those edits any more. I thought it would be in the "History" section in the develop menu. It shows every single thing that I did to the picture. But, when I try to delete (by selecting it and hitting the delete key) any part of the history, nothing happens. What am I doing wrong? I've been having to reset the whole picture because I can't figure out how to undo any of the edits (and this is ONLY when I deselect off of the picture and come back to it later - I know about the undo option). Thanks!

Christina H. wrote:
I've been having to reset the whole picture because I can't figure out how to undo any of the edits (and this is ONLY when I deselect off of the picture and come back to it later - I know about the undo option). Thanks!
You can reset individual sliders back to their default by double clicking on the slider name (e.eg. Exposure, Brightness, Contrast, etc). Same applies in the other Develop module panels.

Undoing insignoficant edits

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