FAQ
Thanks a lot for the response,
No its not a batch insert; each insert is done with auto-commit=true from
the java application. So, after each insert a commit is done at the Db
level, which is the root cause of such a delay, I guess.
But if this auto-commit is the issue than why first 10K records are inserted
quickly.
I cannot disable constraints even for a sinlge second as there will be heavy
reads going on even when inserts are taking place.

Any clues?

TAI

Marul.

Original Message -----
To: "Multiple recipients of list ORACLE-L"
Sent: Thursday, September 05, 2002 2:53 PM
Marul,

I think this question needs to be answered, otherwise impossible to make
suggestions...

Chris

-----Original Message-----
Sent: 05 September 2002 08:18
To: Multiple recipients of list ORACLE-L


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"
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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