Opening multiple sessions in SQL*Plus - Basic Question

Hi All,
I'm trying to issue an update on a table consists of 100 million rows.(update is done on every row). I have queries that updates this table in chunks of 20 million rows. So, if I open 5 sessions in SQL*Plus and run these 5 queries, does that mean Oracle opens up 5 processes in parallel for me ?
If yes, can I use parallel hint in each of these 5 queries and make the update even faster ? How does the above 2 differ ?
I'll be very glad if I hear from anyone,
Thanks,
Madhu.

For every client session there is a server session associated with it. Such as, when you open five session you will have five server session and it serve queires.
Regarding paralle queries, depends whether your table is defined as parallel, how many cpu do you have and also parallel parameters.
Jaffar

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How to invoke sql*plus in a procedure?????
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Look at what you are trying to do.
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You are asking for this PL/SQL to shell out to the operating system, run an external application, for which it will have to supply a username and password (are you planning on hard coding those into your PL/SQL?), and then that external application is supposed to run more SQL or PL/SQL against the database.
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Re: Help with Procedure
Edited by: tem on Apr 18, 2012 6:44 AM

Thanks Jim,
Ctrl-Shift-N doesn't do anything for me. I'm on a mac -- by experimenting it looks like command-N does what you're looking for. This appears to be the same as left-clicking on the "New" icon in the top left corner of SQL Developer, or selecting from the pull-down menu, File > New.
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OK, I found that if I select "SQL File", a worksheet becomes available. Perhaps this is what you intended. However, when I issue the command
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Good Day Gurus,
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For every client session there is a server session associated with it. Such as, when you open five session you will have five server session and it serve queires.
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Jaffar

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null

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'''Scan for Malware'''
Sometimes a problem with Firefox may be a result of malware installed on your computer, that you may not be aware of.
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* [http://www.microsoft.com/security/scanner/default.aspx Microsoft Safety Scanner]
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* [http://support.kaspersky.com/faq/?qid=208283363 TDSSKiller - AntiRootkit Utility]
[http://windows.microsoft.com/MSE Microsoft Security Essentials] is a good permanent antivirus for Windows 7/Vista/XP if you don't already have one.
Further information can be found in the [[Troubleshoot Firefox issues caused by malware]] article.
'''Reset Firefox'''
The Reset Firefox feature can fix many issues by restoring Firefox to its factory default state while saving your essential information.
Note: ''This will cause you to lose any Extensions, Open websites, and some Preferences.''
To Reset Firefox do the following:
#Go to Firefox > Help > Troubleshooting Information.
#Click the "Reset Firefox" button.
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Further information can be found in the [[Reset Firefox – easily fix most problems]] article.
Did this fix your problems? Please report back to us!

Opening multiple sessions in SQL*Plus - Basic Question

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