Ravi Shankar

Tweaking Apps

How to change the number email messages displayed in Yahoo mail

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The number of email messages displayed per page in a Yahoo email can be changed using the Mail Options. Click on the Options link available on the top of the right hand side. Select Mail Options from the menu list.

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In the General Page, using the Messages/results per page field you can increase or decrease the number of email messages displayed per page.

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The list of available values are

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After selecting the required value, click on the Save Changes link available on Top of the General section. By this way you can change the display of email messages per page in Yahoo Mail.

How to recall a message in Gmail

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Gmail provides similar feature like Outlook which can be used to recall a message. This feature can be enabled using Gmail Settings.

1. Logon to your Gmail account.

2. Click on the Settings link available at the top right hand corner next to your email id.

3. In Settings screen, navigate to Labs section.

4. Scroll down to Undo Send section and select the Enable radio option and Click Save changes button to apply the changes.

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5. In the General section, navigate to Undo Send section and set the cancellation period. The available values are 10 and 20 seconds. This specifies the time before which you can use the recall or undo send feature. Click on the Save changes button.

Now if you send any email message, Gmail will display a Undo link as shown below.

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If you click on the Undo link, the email message will be recalled. This Undo link will be available only for the time period specified in the Gmail General Settings.

Windows shortcut for renaming a folder

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Renaming a folder in Windows operating system can be done by right clicking on the folder and selecting Rename from the context menu.

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But if you want to rename number of files then the above process would be time consuming. The quickest way of renaming a folder is to use Windows Keyboard shortcut. Select the folder and press F2 and this would allow us to rename the folder.

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How to import a certificate in Google Chrome

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A SSL certificate can be imported in Google Chrome using option menu. Click on the wrench icon –> options –> Navigate to Under the Hood tab

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Scroll down to Security section and click on the Manage certificates button

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Click on the import button and use the Certificate import wizard to import a certificate

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Click Next and using Browse button locate the certificate file with a .cer or .cert as file extensions.

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Click Next to continue with Certificate Import Wizard

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Specify the location of the Certificate Store

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And click Finish to complete the process.

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How to turn off pop up blocker in Google Chrome

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Google Chrome has an inbuilt pop up blocker feature. The default option is set is Do not allow any site to show pop-ups. You can disable pop up blocker in Google Chrome using Options menu similar to ie8 pop up blocker

Click on the Options menu

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And navigate to Under the Hood tab and Click on the Content settings button

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In the Content settings window, navigate to Pop-ups tab and select Allow all sites to show pop-ups under the Pop-up Settings.

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How to clear or disable recently closed tab section in Firefox

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Firefox displays the recently closed tabs under History menu –> Recently Closed Tabs.

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If you want to clear or disable the recently closed tabs section then you can do the following

  • In the Firefox address bar type about:config
  • If you get the below warning message then click on the I’ll be careful, I promise button

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  • Type browser.sessionstore.max_tabs_undo in Filter text box

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  • Set the value for browser.sessionstore.max_tabs_undo to 0 and click OK to confirm the changes

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Now if you navigate to History menu –> Recently Closed tabs section will be disabled as shown below.

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How to turn on/off pop ups in Internet Explorer 8

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Internet Explorer 8 has settings for blocking pop ups that appearing while accessing a website. Using this setting you can turn on or off a pop up, specify the sites where you want allow pop up to appear. To access Pop-up Blocker, click on Tools menu -> Options -> select Privacy tab in Internet Options dialog box.

popup blocker in Internet Explorer 8

On checking/un checking the Turn on Pop-up Blocker you enable or disable Pop ups. And on clicking settings button the following dialog would be displayed

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Using IE8 Pop-up Blocker settings you can specify the listed of sites that can be allowed Pop-ups and also provides options for changing the Notifications and blocking level.

How to find/kill the locked objects in an oracle database

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The below query can be used for determining the if any object locked in an oracle database.

select   c.owner,  c.object_name,  c.object_type,  b.sid,  b.serial#,
   b.status, b.osuser, b.machine
from
   v$locked_object a , v$session b, dba_objects c
where
   b.sid = a.session_id
and a.object_id = c.object_id;

And if you need to kill any session you can use the below query to do the same.

alter system kill session sid,serial;