How do i clean fast a very large bookmakrs menue

I have "inherited" a PC with Firefox 3.6 that has a bookmark menu of over 6000 items. Manual deletion seems to be very slow and may require many hours.
Is there a fast way to erase all items in BOOKMARKS and then import
my own

Start Firefox in Firefox safe mode, in the dialog box that appears select "Delete all bookmarks except for backups", then click "Make Changes and Restart". This will leave you with the handful of default bookmarks that you get with a new installation.
For details about how to start in safe mode see https://support.mozilla.com/kb/Safe+Mode
You can then import your own bookmarks.

Similar Messages

How can NI FBUS Monitor display very large recorded files

NI FBUS Monitor version 3.0.1 outputs an error message "Out of memory", if I try to load a large recorded file of size 272 MB. Is there any combination of operating system (possible Vista32 or Vista64) and/or physical memory size, where NI FBUS Monitor can display such large recordings ? Are there any patches or workarounds or tools to display very large recorded files?

Hi,
NI-FBUS Monitor does not set the limitation on the maximum record file size. The physical memory size in the system is one of the most important factors that affect the loading of large record file. Monitor will try loading the entire file into the memory during file open operation.
272MB is a really large file size. To open the file, your system must have sufficient physical memory available. Otherwise "Out of memory" error will occur.
I would recommend you do not use Monitor to open a file larger than 100MB. Loading of a too large file will consume the system memory quickly and decrease the performance.
Message Edited by Vince Shen on 11-30-2009 09:38 PM
Feilian (Vince) Shen

How to check duplicate in a very large table

How to check duplicate value (say mobile number) in a table having 50 million records

I need to know whether the data(Mobile Number) is already there in the table whenever a new row is inserted
You can also use the MERGE statement and the WHEN NOT MATCHED clause to insert rows only if that value is not there.
But if you are just checking the one column then a unique index would do it.
Does that column allow a NULL value?
Do you care about existing duplicate values?
If you only want to check NEW inserts then create a UNIQUE constraint and use the ENABLE NOVALIDATE clause:
http://docs.oracle.com/cd/B28359_01/server.111/b28286/clauses002.htm
ENABLE NOVALIDATE ensures that all new DML operations on the constrained data comply with the constraint. This clause does not ensure that existing data in the table complies with the constraint.
That will check new data but leave the old data alone - no performance hit for the old data.

Checking a Sub String in a String of a very large file ?

Hi All,
I am having a 20mb file and i am coverting that 20mb file to a string.now i like to search whether the following substring appears in the string
a) One
b) Two
c) Three
I am just checking with String.indexOf() for each .
Is there is any other efficient way of searching this rather than the above method String.indexOf
please give me some suggestion how to perform searching in a very large string.
Thanks,
J.Kathir

We have to read line and check for the three strings
right ?
Is there is any other way to check the substring in
the whole string ?
Reading line by line and searching for the three
strings or Reading the entire file as string and
searching for the substring
which is better ?Depends on your definition of "better" - reading line by line saves memory, but is probably slower. Reading the entire file into memory then searching it is probably faster but takes more memory.
As a third option, if you're using version 1.5, you can use the Scanner class to read the file and search for all 3 strings at the same time...something like this:
Scanner scn = new Scanner(new File("myfile.txt"));
String regExp = "a|b|c";
String s;
while ((s = scn.findWithinHorizon(regExp)) != null) {
System.out.println("Found: " + s);
scn.close();I'm pretty sure this is more efficient as it looks for anything matching the regular expression as it goes through the String...but I haven't done any timings on each approach.

I need to sort very large Excel files and perform other operations. How much faster would this be on a MacPro rather than my MacBook Pro i7, 2.6, 15R?

I am a scientist and run my own business. Money is tight. I have some very large Excel files (~200MB) that I need to sort and perform logic operations on. I currently use a MacBookPro (i7 core, 2.6GHz, 16GB 1600 MHz DDR3) and I am thinking about buying a multicore MacPro. Some of the operations take half an hour to perform. How much faster should I expect these operations to happen on a new MacPro? Is there a significant speed advantage in the 6 core vs 4 core? Practically speaking, what are the features I should look at and what is the speed bump I should expect if I go to 32GB or 64GB? Related to this I am using a 32 bit version of Excel. Is there a 64 bit spreadsheet that I can us on a Mac that has no limit on column and row size?

Grant Bennet-Alder,
It’s funny you mentioned using Activity Monitor. I use it all the time to watch when a computation cycle is finished so I can avoid a crash. I keep it up in the corner of my screen while I respond to email or work on a grant. Typically the %CPU will hang at ~100% (sometimes even saying the application is not responding in red) but will almost always complete the cycle if I let it go for 30 minutes or so. As long as I leave Excel alone while it is working it will not crash. I had not thought of using the Activity Monitor as you suggested. Also I did not realize using a 32 bit application limited me to 4GB of memory for each application. That is clearly a problem for this kind of work. Is there any work around for this? It seems like a 64-bit spreadsheet would help. I would love to use the new 64 bit Numbers but the current version limits the number of rows and columns. I tried it out on my MacBook Pro but my files don’t fit.
The hatter,
This may be the solution for me. I’m OK with assembling the unit you described (I’ve even etched my own boards) but feel very bad about needing to step away from Apple products. When I started computing this was the sort of thing computers were designed to do. Is there any native 64-bit spreadsheet that allows unlimited rows/columns, which will run on an Apple? Excel is only 64-bit on their machines.
Many thanks to both of you for your quick and on point answers!

With journaling, I have found that my computer is saving a large amount of data, logs of all the changes I make to files; how can I clean up these logs?

With journaling, I have found that my computer is saving a large amount of data, logs of all the changes I make to files; how can I clean up these logs?
For example, in Notes, I have written three notes; however if I click on 'All On My Mac' on the side bar, I see about 10 different versions of each note I make, it saves a version every time I add or delete a sentence.
I also noticed, that when I write an email, Mail saves about 10 or more draft versions before the final is sent.
I understand that all this journaling provides a level of security, and prevents data lost; but I was wondering, is there a function to clean up journal logs once in a while?
Thanks
Roz

Are you using Microsoft word? Microsoft thinks the users are idiots. They put up a lot of pointless messages that annoy & worry users. I have seen this message from Microsoft word. It's annoying.
As BDaqua points out...
When you copy information via edit > copy, command + c, edit > cut, or command +x, you place the information on the clipboard. When you paste information, edit > paste or command + v, you copy information from the clipboard to your data file.
If you edit > cut or command + x and you do not paste the information and you quite Word, you could be loosing information. Microsoft is very worried about this. When you quite Word, Microsoft checks if there is information on the clipboard & if so, Microsoft puts out this message.
You should be saving your work more than once a day. I'd save every 5 minutes. command + s does a save.
Robert

How do I clean my mid 2007 iMac? The disk space is running VERY low and I would love an idea. I make videos and upload them to youtube and I need space to do that. Thanks for your time!

How do I clean my mid 2007 iMac?
The disk space is running VERY low and I would love an idea. I make videos and upload them to youtube and I need space to do that. Thanks for your time!
If you have an idea please respond!

You should never, EVER let a conputer hard drive get completely full, EVER!
With Macs and OS X, you shouldn't let the hard drive get below 15 GBs or less of free data space.
If it does, it's time for some hard drive housecleaning.
Follow some of my tips for cleaning out, deleting and archiving data from your Mac's internal hard drive.
Have you emptied your iMac's Trash icon in the Dock?
If you use iPhoto, iPhoto has its own trash that needs to be emptied, also.
If you store images in other locations other than iPhoto, then you will have to weed through these to determine what to archive and what to delete.
If you use Apple Mail app, Apple Mail also has its own trash area that needs to be emptied, too!
Look though other Apple Mail folders like the junk mail and delete the mail that is in there. Look through your sent items folders and see there is any mail in there that can be deieted.
Delete any old or no longer needed emails and/or archive to disc, flash drives or external hard drive, older emails you want to save.
Other things you can do to gain space.
Once you have around 15 GBs regained, do a search, download and install OmniDisk Sweeper.
This app will help you locate files that you can move/archive and/or delete from your system.
STAY AWAY FROM DELETING ANY FILES FROM OS X SYSTEM FOLDER!
Look through your Documents folder and delete any type of old useless type files like "Read Me" type files.
Again, archive to disc, flash drives, ext. hard drives or delete any old documents you no longer use or immediately need.
Look in your Applications folder, if you have applications you haven't used in a long time, if the app doesn't have a dedicated uninstaller, then you can simply drag it into the OS X Trash icon. IF the application has an uninstaller app, then use it to completely delete the app from your Mac.
Download an app called OnyX for your version of OS X.
When you install and launch it, let it do its initial automatic tests, then go to the cleaning and maintenance tabs and run the maintenance tabs that let OnyX clean out all web browser cache files, web browser histories, system cache files, delete old error log files.
Typically, iTunes and iPhoto libraries are the biggest users of HD space.
move these files/data off of your internal drive to the external hard drive and deleted off of the internal hard drive.
If you have any other large folders of personal data or projects, these should be archived or moved, also, to the optical discs, flash drives or external hard drive and then either archived to disc and/or deleted off your internal hard drive.
Good Luck!

In Mail, one mailbox for Recovered Message (AOL) keeps showing 1 very large message that I cannot delete. How can I get rid of this recurring problem, please?

In Mail on iMac, successfully running OS X Lion, one mailbox on My Mac for "Recovered Messages (from AOL)" keeps showing 1 very large message (more than 20 Mb) that I just cannot seem to delete. Each time I go into my In Box, the "loading" symbol spins and the message appears in the "Recovered Messages" mailbox. How can I get rid of this recurrent file, please?
At the same time, I'm not receviving any new mails in my In Box, although, if I look at the same account on my MacBook Pro, I can indeed see the incoming mails (but on that machine I do not have the "recovery" problem).
The help of a clear-thinking Apple fan would be greatly appreciated.
Many thanks.
From Ian in Paris, France

Ian
I worked it out.
Unhide your hidden files ( I used a widget from http://www.apple.com/downloads/dashboard/developer/hiddenfiles.html)
Go to your HD.
Go to Users.
Go to your House (home)
there should be a hidden Library folder there (it will be transparent)
Go to Mail in this folder
The next folder ( for me ) is V2
Click on that and the next one will be a whole list of your mail servers, and one folder called Mailboxes
Click on that and there should be a folder called recovered messages (server) . mbox
Click on that there a random numbered/lettered folder -> data
In that data folder is a list of random numbered folders (i.e a folder called 2, one called 9 etc) and in EACH of these, another numbered folder, and then a folder called messages.
In the messages folder delete all of the ebmx (I think that's what they were from memory, sorry I forgot as I already deleted my trash after my golden moment).
This was GOLDEN for me. Reason being, when I went to delete my "recovered file" in mail, it would give me an error message " cannot delete 2500 files". I knew it was only 1 file so this was weird. Why 2500 files? Because if you click on the ebmx files like I did, hey presto, it turned out that they were ALL THE SAME MESSAGE = 2500 times. In each of those folders in the random numbers, in their related message folder.
Now remember - DONT delete the folder, make sure you have gone to the message folder, found all those pesky ebmx files and deleted THOSE, not the folder.
It worked for me. No restarting or anything. And recovered file. GONE.
Started receiving and syncing mail again. Woohoo.
Best wishes.

How can I clean all the junk files from my iMac so that it can run faster?

How can I clean all the junk files from my iMac so that it can run faster? Its been slowing down ever since I started using it.

Before doing anything, we might be able to help with your iMac issues here.
Please download, install and run Etrecheck.
http://www.etresoft.com/etrecheck
Copy/paste its report here in another reply thread so that we have a complete profile of your Mac's hardware and installed software.

How can we suggest a new DBA OCE certification for very large databases?

How can we suggest a new DBA OCE certification for very large databases?
What web site, or what phone number can we call to suggest creating a VLDB OCE certification.
The largest databases that I have ever worked with barely over 1 Trillion Bytes.
Some people told me that the results of being a DBA totally change when you have a VERY LARGE DATABASE.
I could guess that maybe some of the following topics of how to configure might be on it,
* Partitioning
* parallel
* bigger block size - DSS vs OLTP
* etc
Where could I send in a recommendation?
Thanks Roger

I wish there were some details about the OCE data warehousing.
Look at the topics for 1Z0-515. Assume that the 'lightweight' topics will go (like Best Practices) and that there will be more technical topics added.
Oracle Database 11g Data Warehousing Essentials | Oracle Certification Exam
Overview of Data Warehousing
Describe the benefits of a data warehouse
Describe the technical characteristics of a data warehouse
Describe the Oracle Database structures used primarily by a data warehouse
Explain the use of materialized views
Implement Database Resource Manager to control resource usage
Identify and explain the benefits provided by standard Oracle Database 11g enhancements for a data warehouse
Parallelism
Explain how the Oracle optimizer determines the degree of parallelism
Configure parallelism
Explain how parallelism and partitioning work together
Partitioning
Describe types of partitioning
Describe the benefits of partitioning
Implement partition-wise joins
Result Cache
Describe how the SQL Result Cache operates
Identify the scenarios which benefit the most from Result Set Caching
OLAP
Explain how Oracle OLAP delivers high performance
Describe how applications can access data stored in Oracle OLAP cubes
Advanced Compression
Explain the benefits provided by Advanced Compression
Explain how Advanced Compression operates
Describe how Advanced Compression interacts with other Oracle options and utilities
Data integration
Explain Oracle's overall approach to data integration
Describe the benefits provided by ODI
Differentiate the components of ODI
Create integration data flows with ODI
Ensure data quality with OWB
Explain the concept and use of real-time data integration
Describe the architecture of Oracle's data integration solutions
Data mining and analysis
Describe the components of Oracle's Data Mining option
Describe the analytical functions provided by Oracle Data Mining
Identify use cases that can benefit from Oracle Data Mining
Identify which Oracle products use Oracle Data Mining
Sizing
Properly size all resources to be used in a data warehouse configuration
Exadata
Describe the architecture of the Sun Oracle Database Machine
Describe configuration options for an Exadata Storage Server
Explain the advantages provided by the Exadata Storage Server
Best practices for performance
Employ best practices to load incremental data into a data warehouse
Employ best practices for using Oracle features to implement high performance data warehouses

How do share a very large file?

How do share a very large file?

Do you want to send a GarageBand project or the bounced audio file? To send an audio file is not critical, but if you want to send the project use "File > Compress" to create a .zip file of the project before you send it.
If you have a Dropbox account, I'd simply copy the file into the Dropbox "public" folder and mail the link. Right-click the file in the Dropbox, then choose Dropbox > Copy Public Link. This copies an Internet link to your file that you can paste anywhere: emails, instant messages, blogs, etc.
2 GB on Dropbox are free. https://www.dropbox.com/help/category/Sharing

I inadvertently created a very large file. Not needing it I sent it to the Trash Can. However, the deletion process never completes. Any suggestions as to how to delete it ?

I inadvertently created a very large file on my hard drive. Not needing it I sent it to the Trash Can. However, the deletion process never completes. Any suggestions as to how to delete it ? I re-installed the OS but the file was still there taking up needed space.

Command-click all of the files you want to delete and don't actually move them to the Trash until you've gone through the entire folder.
(63341)

My pdf created in ID opens/views in Preview very large. How do I export so that the pdf views smaller?

My pdf created in ID opens/views in Preview very large. How do I export so that the pdf views smaller?

melanie475689 wrote:
...in Preview, the file still opened at the same large size. Any other thoughts/suggestions?
Bob's post says it all. Preview ignores the PDF's Initial View setting, and beyond that, it's a horribly unreliable vehicle for accurate viewing of...just about anything. If you're engaged in professional design work, Preview has no legitimate place in your workflow.

How To Get rid of Exponential format in datagridview when the number is very large

When the number is very large like :290754232, I got 2.907542E +08. in datagridview cell
I using vb.net , framework 2.0.
how can I get rid of this format?
Thanks in advance

should I change the type of this column to integer or long ?
The datagridview is binded to binding source and a list ( Of).
Mike,
I'll show you an example that shows the correct way to do this and a another way if you're stuck using strings in exponential format. The latter being the "hack way" I spoke about Friday. I don't like it, it's dangerous, but I'll show both anyway.
In this example, I'm using Int64 because I don't know the range of yours. If your never exceeds Int32 then use that one instead.
First, I have a DataGridView with three columns. I've populated the data just by creating longs starting with the maximum value in reverse order for 100 rows:
The way that I created the data is itself not a great way (there's no encapsulation), but for this example "it'll do".
Notice though that the third column (right-most column) isn't formatted at all. I commented out the part that does that so that I could then explain what I'm doing. If it works, it should look like the first column.
The first column represents an actual Int64 and when I show the code, you can see how I'm formatting that using the DGV's DefaultCellStyle.Format property. That's how it SHOULD be done.
The third column though is just a string and because that string contains a letter in it, Long.TryParse will NOT work. This is where the "hack" part comes in - and it's dangerous, but if you have no other option then ...
You can see that now the third column matches the first column. Now the code:
Option Strict On
Option Explicit On
Option Infer Off
Public Class Form1
Private Sub Form1_Load(ByVal sender As System.Object, _
ByVal e As System.EventArgs) _
Handles MyBase.Load
With DataGridView1
.AllowUserToAddRows = False
.AllowUserToDeleteRows = False
.AllowUserToOrderColumns = False
.AllowUserToResizeRows = False
.AlternatingRowsDefaultCellStyle.BackColor = Color.Aquamarine
.ReadOnly = True
.SelectionMode = DataGridViewSelectionMode.FullRowSelect
.MultiSelect = False
.RowHeadersVisible = False
.RowTemplate.Height = 30
.EnableHeadersVisualStyles = False
With .ColumnHeadersDefaultCellStyle
.Font = New Font("Tahoma", 9, FontStyle.Bold)
.BackColor = Color.LightGreen
.WrapMode = DataGridViewTriState.True
.Alignment = DataGridViewContentAlignment.MiddleCenter
End With
.ColumnHeadersHeightSizeMode = DataGridViewColumnHeadersHeightSizeMode.DisableResizing
.ColumnHeadersHeight = 50
.DataSource = Nothing
.Enabled = False
End With
CreateData()
End Sub
Private Sub CreateData()
Dim longList As New List(Of Long)
For l As Long = Long.MaxValue To 0 Step -1
longList.Add(l)
If longList.Count = 100 Then
Exit For
End If
Next
Dim stringList As New List(Of String)
For Each l As Long In longList
stringList.Add(l.ToString("e18"))
Next
Dim dt As New DataTable
Dim column As New DataColumn
With column
.DataType = System.Type.GetType("System.Int64")
.ColumnName = "Actual Long Value (Shown Formated)"
dt.Columns.Add(column)
End With
column = New DataColumn
With column
.DataType = System.Type.GetType("System.String")
.ColumnName = "String Equivalent"
dt.Columns.Add(column)
End With
column = New DataColumn
With column
.DataType = System.Type.GetType("System.String")
.ColumnName = "Formated String Equivalent"
dt.Columns.Add(column)
End With
Dim row As DataRow
For i As Integer = 0 To longList.Count - 1
row = dt.NewRow
row("Actual Long Value (Shown Formated)") = longList(i)
row("String Equivalent") = stringList(i)
row("Formated String Equivalent") = stringList(i)
dt.Rows.Add(row)
Next
Dim bs As New BindingSource
bs.DataSource = dt
BindingNavigator1.BindingSource = bs
DataGridView1.DataSource = bs
With DataGridView1
With .Columns(0)
.DefaultCellStyle.Format = "n0"
.Width = 150
End With
.Columns(1).Width = 170
.Columns(2).AutoSizeMode = DataGridViewAutoSizeColumnMode.Fill
.Enabled = True
End With
End Sub
' The following is what I commented
' out for the first screenshot. ONLY
' do this if there is absolutely no
' other way though - the following
' casting operation is NOT ADVISABLE!
Private Sub DataGridView1_CellFormatting(ByVal sender As Object, _
ByVal e As System.Windows.Forms.DataGridViewCellFormattingEventArgs) _
Handles DataGridView1.CellFormatting
If e.ColumnIndex = 2 AndAlso e.Value.ToString IsNot Nothing Then
' NOTE! The following is dangerous!
' I'm going to use coercion to force the
' string into a type long. TryParse will
' NOT work here. This can easily throw an
' exception if the string cannot be cast
' to a type long. I'm "depending on" the
' the string to cast. At the very least
' you might put this in a Try/Catch but
' that won't stop it from failing (if
' it doesn't work).
Dim actualValue As Long = CType(e.Value.ToString, Long)
Dim formattedValue As String = actualValue.ToString("n0")
e.Value = formattedValue
End If
End Sub
End Class
Like I said, only use that hack way if there's no other option!
I hope it helps. :)
Still lost in code, just at a little higher level.

My iPad is very slow how do I clean it up or make it run better?

My iPad is very slow how do I clean it up or make it run better?

(A) Try reset iPad
Hold down the Sleep/Wake button and the Home button at the same time for at least ten seconds, until the Apple logo appears
Note: Data will not be affected.
(B) Try reset all settings
Settings>General>Reset>Reset All Settings
Note: Data will not be affected but settings for Wi-Fi, FaceTime, Message, Home Sharing will be reset

How do i clean fast a very large bookmakrs menue

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