Memory error while OCRing a large PDF

I have a 3.000 pages's PDF, which amounts to 1 gigabyte, out of a scanned book.
When trying to perform OCR with ClearScan 600 dpi set, Acrobat seems to go ok for many pages but then suddenly I get this error:
Acrobat could not perform recognition
(OCR) because:
There is insufficient memory to process
this page.
I am on a macbook Air with 4G. I checked the disk space and there are 71 free. I googled around and saw people with 16G RAM with the same error.
So what should I do?
I need to keep the 600 dpi choice for it's a book (a legal code) with small fonts and I am afraid downsampling would make it unreadable.
Any hint?
Thank you and have a nice weekend.
– cordialmente,
tiziano solignani, da  Mac
http://blog.solignani.it

Hi Tiziano -
Rather than scanning the entire book into one file, scan about 1/4 of the book and save as a pdf file. Then repeat until you have 4 files. Save them all, then combine them in Acrobat. It takes far less memory to simply combine files than to store all that scanned information and try to produce the single file.
donna.

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The report has static column headings and, in the Visibility properties, Hidden is set to true.
The matrix report has multiple columns and rows and, in the Visibility properties, Hidden is set to true and
you tried to export to PDF or TIFF.
Regards
Shiv

Out of memory error while starting NWDS

Hi.
I have NWDS 7.0.08 installed. I'm developing DC's assigned to a DTR. While working, I had about 10 projects open in the workspace and when I tried opening another one, NWDS crashed giving an "out of memory" error. And when I try to reopen NWDS, I get the error "Problems during startup. Check the .log file in the .metadata directory of your workspace".
When I look at the log, I see the following lines:
!ENTRY org.eclipse.core.runtime 4 2 Feb 19, 2007 16:32:18.78
!MESSAGE Problems occurred when invoking code from plug-in: "org.eclipse.core.runtime".
!STACK 1
org.eclipse.core.internal.resources.ResourceException(null)[567]: java.io.EOFException
     at java.io.DataInputStream.readUnsignedShort(DataInputStream.java:400)
     at java.io.DataInputStream.readUTF(DataInputStream.java:633)
     at java.io.DataInputStream.readUTF(DataInputStream.java:610)
     at org.eclipse.core.internal.dtree.DataTreeReader.readNode(DataTreeReader.java:57)
     at org.eclipse.core.internal.resources.WorkspaceTreeReader.readTree(WorkspaceTreeReader.java:44)
     at org.eclipse.core.internal.resources.SaveManager.restoreTree(SaveManager.java:776)
     at org.eclipse.core.internal.resources.SaveManager.restore(SaveManager.java:488)
     at org.eclipse.core.internal.resources.SaveManager.startup(SaveManager.java:1033)
     at org.eclipse.core.internal.resources.Workspace.startup(Workspace.java:1734)
     at org.eclipse.core.internal.resources.Workspace.open(Workspace.java:1537)
     at org.eclipse.core.resources.ResourcesPlugin.startup(ResourcesPlugin.java:268)
     at org.eclipse.core.internal.plugins.PluginDescriptor$1.run(PluginDescriptor.java:736)
     at org.eclipse.core.internal.runtime.InternalPlatform.run(InternalPlatform.java:1006)
     at org.eclipse.core.internal.plugins.PluginDescriptor.internalDoPluginActivation(PluginDescriptor.java:748)
     at com.sap.ide.eclipse.startup.Main.run(Main.java:789)
     at com.sap.ide.eclipse.startup.Main.main(Main.java:607)
!ENTRY org.eclipse.core.resources 4 567 Feb 19, 2007 16:32:18.78
!MESSAGE Problems reading workspace tree.
!STACK 0
java.io.EOFException
     at java.io.DataInputStream.readUnsignedShort(DataInputStream.java:400)
     at java.io.DataInputStream.readUTF(DataInputStream.java:633)
     at com.sap.ide.eclipse.startup.Main.run(Main.java:789)
     at com.sap.ide.eclipse.startup.Main.main(Main.java:607)
!ENTRY org.eclipse.core.runtime 4 2 Feb 19, 2007 16:32:18.93
!MESSAGE Plug-in com.tssap.util was unable to load class com.tssap.util.startup.WBLauncher.
!STACK 0
org.eclipse.core.internal.boot.DelegatingLoaderException: org.eclipse.core.runtime.CoreException: Problems encountered starting up plug-in: "org.eclipse.core.resources".
     at org.eclipse.core.internal.plugins.PluginDescriptor.internalDoPluginActivation(PluginDescriptor.java:754)
     at org.eclipse.core.internal.plugins.PluginDescriptor.doPluginActivation(PluginDescriptor.java:188)
     at org.eclipse.core.internal.plugins.PluginClassLoader.activatePlugin(PluginClassLoader.java:112)
     at com.sap.ide.eclipse.startup.Main.main(Main.java:607)
!ENTRY org.eclipse.core.runtime 4 2 Feb 19, 2007 16:32:18.93
!MESSAGE Plug-in com.tssap.util was unable to load class com.tssap.util.startup.WBLauncher.
!STACK 0
org.eclipse.core.internal.boot.DelegatingLoaderException: org.eclipse.core.runtime.CoreException: Problems encountered starting up plug-in: "org.eclipse.core.resources".
     at org.eclipse.core.internal.plugins.PluginDescriptor.internalDoPluginActivation(PluginDescriptor.java:754)
     at org.eclipse.core.internal.plugins.PluginDescriptor.doPluginActivation(PluginDescriptor.java:188)
     at org.eclipse.core.internal.plugins.PluginClassLoader.activatePlugin(PluginClassLoader.java:112)
     at com.sap.ide.eclipse.startup.Main.main(Main.java:607)
!SESSION -
!ENTRY org.eclipse.core.launcher 4 0 Feb 19, 2007 16:32:18.109
!MESSAGE Exception launching the Eclipse Platform:
!STACK
java.lang.reflect.InvocationTargetException
     at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
     at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39)
     at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
     at java.lang.reflect.Method.invoke(Method.java:324)
     at com.sap.ide.eclipse.startup.Main.basicRun(Main.java:291)
     at com.sap.ide.eclipse.startup.Main.run(Main.java:789)
     at com.sap.ide.eclipse.startup.Main.main(Main.java:607)
Caused by: java.lang.IllegalArgumentException: Application not found: com.tssap.util.WBLauncher.
     at org.eclipse.core.internal.boot.InternalBootLoader.run(InternalBootLoader.java:856)
     at org.eclipse.core.boot.BootLoader.run(BootLoader.java:461)
     ... 7 more
I cut off some parts as they are too long and seem to be useless.
I guess NWDS is trying to reopen the projects I was working on while it crashed. So, how can I prevent it?
I can't change my workspace because I have open activites in DTR, so I shouldn't loose my DCs.
Help? Anybody?
Thanks in advance..

Hi guys.
I've solved my problem. I deleted the project navigator tree structure files from workspace, and NWDS opened up with a clean workspace . But the projects themselves were there though. So I recreated my DC projects, but didn't download the sources, modified local copies are used instead.
I deleted the these files:
<workspace>\.metadata\.plugins\org.eclipse.core.resources\.safetable\org.eclipse.core.resources
<workspace>\.metadata\.plugins\org.eclipse.core.resources\.root\###.tree
Then I opened NWDS and it was clean. I opened the Development Configurations perspective, in the Local DCs view, right-clicked on each DC and choosed "Create Project". This looks like a safe method, it worked for me.

Memory error while OCRing a large PDF

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