RE: Inserts are taking time !

Marul, what i fail to understand is:

Are you running a batch job of inserting 350,000 inserts?

If that is the case then you should go for dropping and recreating the indexes. Can you partition the table and use local partitioned indexes?

Can't you try the option of inserting in parallel?

Did you try disabling the constraints and then ENABLE NOVALIDATE them(that will only work if you r sure of the data)?

Naveen

-----Original Message-----
Sent: Thursday, September 05, 2002 11:48 AM To: Multiple recipients of list ORACLE-L

Thanks Chris,
So than any clues how to resolve this issue, as earliest, becuase this is causing bottleneck in our application .

Rgds,
Marul.

• Original Message ----- To: "Multiple recipients of list ORACLE-L" <ORACLE-L_at_fatcity.com> Sent: Thursday, September 05, 2002 2:29 AM

> Good question, Jared! Perhaps 'overflow' is technically not the correct
> term to use to decribe this scenario but it seemed to fit the bill
> sufficiently to mail off a quick one-liner solution without going into
great
> depth. Some of us have work to do, you know ;)
>
> To redeem myself I probably should have mentioned that this table sounds
> pretty volatile. Consequently the index(es) are likely to end up fairly
> disorganized, especially if the 350k records are being inserted in
> ascending order. Once you start adding levels to the index things start
to
> slow down....
>
> Chris
>
> -----Original Message-----
> Sent: 04 September 2002 16:50
> To: ORACLE-L_at_fatcity.com; chris.w.johnson_at_bt.com
>
>
> On Wednesday 04 September 2002 04:23, chris.w.johnson_at_bt.com wrote:
> > It sounds to me like the indexes are going into overflow - this will
cause
>
> What do you mean by 'overflow'?
>
> Jared
>
> > the insert time to increase. I would suggest batching up the inserts,
> > dropping the indexes, running the inserts and re-creating the indexes.
> >
> > Chris
> >
> > -----Original Message-----
> > Sent: 04 September 2002 07:53
> > To: Multiple recipients of list ORACLE-L
> >
> >
> > Hi All,
> >
> > We have a table which can contain more than half a million records. When
> we
> > try to insert some 10k records in the empty table it get inserted in 10
> > min. but as the size increases time taken to insert also increases.
After
> > 350,000 records it takes around an hour to insert 10k records.
> > There are around 15 columns in it out of which 11 are indexed. There is
> one
> > concatenated function-based index on two columns of Varchar type and two
> > separate index for the same two columns.
> >
> > I have checked the free space for the tablespaces to which the table and
> > indexes are attached to. They are in two separate tbs.
> >
> > Any clues why this is happenning.
> >
> > TIA
> > Marul.
>
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-- 
Author: Marul Mehta
  INET: marul_at_zycus.com

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Author: Naveen Nahata
  INET: naveen_nahata_at_mindtree.com

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