select seq.nextval into :local_var from dual;
insert into tabx values (:local_var, ...);
compared to
insert into tabx(seq.nextval, ...)
returning id_col into :local_var;
The former has a non-zero probability of the
inserts arriving out of order, and therefore
wrecking the sequential input.
Regard
Jonathan Lewis
ian@(protected) wrote:
> I 'm curious, how does coding of an application effect index block splits. Does Oracle know because the index is based on a monotonic key that the splits should be 100/0. I wouldn 't call that application coding. Do the 100/0 splits occur unless numbers are lost due to the sequence being kicked out of cache or something else causes values to be skipped?
>
> Ian MacGregor
> Stanford Linear Accelerator Center
> ian@(protected)
>
>
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