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- chandrapabba.blogspot.com
  
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  SQL> select segment_name, bytes, a.blocks, compression, compress_for from 2 dba_segments a, dba_tables b 3 where a.segment_name = b.table_name and a.segment_name='T1'; SEGMENT_NAME BYTES BLOCKS COMPRESS ...
  
  2025-06-12
  
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  David Marcos' Blog | Just another Oracle weblog
  
  Smart scan on Exadata and direct path reads. 10 July 2011 Posted by David Alejo Marcos in Uncategorized. 4 comments Couple of days ago I was called to investigate a performance problem on one of our developement databases. People complained of slowness ..
  
  2025-06-11
  
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How to Update millions or records in a table - Ask Tom

日期：2025-06-08

2002年11月10日 - To do that create another table which stores the rowids of the records in the .... me what else can I do within my program to improve the performance of my updates? ... As I said, this is a C++ app, running Solaris + Oracle 8i/9i....

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Update million rows using rowids from one table to another ...

日期：2025-06-15

2013年6月17日 - Update million rows using rowids from one table to another Oracle ... Even with your audit triggers, I wouldn't expect performance to be this bad....

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oracle - How to UPDATE one column using another column ...

日期：2025-06-09

2012年1月29日 - Try this: UPDATE SALES_DATA_FAMILY_2007 A SET A.POG_ID = ( SELECT P.POG_ID FROM POG_HIERARCHY P WHERE A.FAMILY_ID ......

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oracle11g - Update Oracle table with values from another ...

日期：2025-06-11

2012年8月14日 - Update Oracle table with values from another table ... If there was no error and this is simply a query performance issue, what is the query plan?...

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How to optimize an update SQL that runs on a Oracle table

日期：2025-06-11

2010年6月3日 - [TABLE] is an Oracle database table with more than 700 million rows. ... Is there any SQL hint that could improve performance? Or any other ......

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UPDATE only rows which match another table in SQL

日期：2025-06-08

I have a SQL query where I am trying to update a column in a table from data in ... Increasing query/performance speed – SearchEnterpriseLinux; Performing a ... More on Oracle and SQL ... Another approach is to use a joined update query....

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Sql Update from another table performance - Oracle.com ...

日期：2025-06-08

2008年7月7日 - Hello I have the following query. The subquery takes 2 mins if ran alone. When I try to update off it , the process takes 30mins. Is the subquery ......

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Loading Tables - Oracle Documentation

日期：2025-06-12

跳到 Improving INSERT Performance with Direct-Path Insert - Oracle Database inserts data into a table in one of two ways: ... if errors occur during index update. ... Another usage scenario might be inserts in a FORALL loop in PL/SQL....

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