oracle - Can you using joins with direct path inserts? -

-

i have tried find examples simple single clause. here situation. have bunch of legacy data transferred database. have "good" tables in same database. need transfer (data-conversion) data legacy tables thew tables. because different set of tables data-conversion requires complex joins put old data new tables correctly.

so, old tables old data.

new tables must have old data requires lots of joins old data new tables correctly.

can use direct path lots of joins this? insert select (lots of joins) direct path apply tables on same database (transfer between tables)? loading tables text file?

thank you.

the query in select can complex you'd direct-path insert. direct-path refers destination table. has nothing way data read or processed.

if you're doing direct-path insert, you're asking oracle insert new data above high water mark of table bypass normal code reuses space in existing blocks new rows inserted. has block other inserts since can't have high water mark of table change during direct-path insert. isn't big deal if you've got downtime window in load quite problematic if wanted existing tables available other applications during load.


Comments

Post a Comment

Popular posts from this blog

objective c - Change font of selected text in UITextView -

-
can suggest me how change font of selected text in uitextview.i cannot use uiwebview since have edit text. have seen pages app.how possible in app. see formatting text within uilabel differently . since need editing, should @ javascript-based editors such ckeditor or tinymce . highly recommend wwdc 2011 video session 511: "rich text editing in safari on ios."
Read more

php - Accessing POST data in Facebook cavas app -

-
so i've got simple form in canvas / iframe facebook app, , i'm trying pass along values post. reading on s.o. , fb's latest docs, understand it, data send via post form can accessed on receiving end $_request object. i read on thread on s.o. in order post forms work need pass along input named "signed_request" value current signed_request (i have signed request working ok otherwise...all login , authentication stuff working fine). isnt mentioned anywhere in official fb docs. so problem comes in $_request object signed request, , bunch of other session stuff. form inputs found. the way can read them set method of form "request" isn't real form method. takes of inputs , sends them args in url. horrible. here's sample page canvas app form i'm using try debug (leaving out authentication stuff): <form enctype="application/x-www-form-urlencoded" method="post" target="_top" id="my_form" action=...
Read more

c# - Getting control value when switching a view as part of a multiview -

-
i have following code in aspx page: <asp:button id="display_button" runat="server" text="display" onclick="button1_click" /> &nbsp; <asp:button id="edit_button" runat="server" text="edit" onclick="button2_click" /> &nbsp; <asp:button id="save_button" runat="server" text="save" onclick="button3_click" visible="false" /> &nbsp; <asp:multiview id="multiview1" runat="server" activeviewindex="0"> <asp:view id="view1" runat="server"> <asp:formview id="view_program" runat="server"> <itemtemplate> <%# eval("status").tostring().trim() %> </itemtemplate> </asp:formview> </asp:view> <asp:view id="view2" runat="server"> ...
Read more