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DB-&gt;set_h_nelem
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#include &lt;db.h&gt;

int
DB-&gt;set_h_nelem(DB *db, u_int32_t h_nelem);

int
DB-&gt;get_h_nelem(DB *db, u_int32_t *h_nelemp);
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Description: DB-&gt;set_h_nelem
Set an estimate of the final size of the hash table.
In order for the estimate to be used when creating the database, the
<a href="../../db4-devel-4.7.25/api_c/db_set_h_ffactor.html">DB-&gt;set_h_ffactor</a> method must also be called. If the estimate
or fill factor are not set or are set too low, hash tables will still
expand gracefully as keys are entered, although a slight performance
degradation may be noticed.
The DB-&gt;set_h_nelem method configures a database, not only operations performed
using the specified <a href="../../db4-devel-4.7.25/api_c/db_class.html">DB</a> handle.
The DB-&gt;set_h_nelem method may not be called after the <a href="../../db4-devel-4.7.25/api_c/db_open.html">DB-&gt;open</a> method is called.
If the database already exists when
<a href="../../db4-devel-4.7.25/api_c/db_open.html">DB-&gt;open</a> is called, the information specified to DB-&gt;set_h_nelem will
be ignored.

The DB-&gt;set_h_nelem method
returns a non-zero error value on failure
and 0 on success.

Parameters 
 h_nelem<ul compact><li>The h_nelem parameter is an estimate of the final size of the
hash table.</ul>
 
 Errors
The DB-&gt;set_h_nelem method
may fail and return one of the following non-zero errors:
 
EINVAL<ul compact><li>If the method was called after <a href="../../db4-devel-4.7.25/api_c/db_open.html">DB-&gt;open</a> was called; or if an
invalid flag value or parameter was specified.</ul>
 
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Description: DB-&gt;get_h_nelem
The DB-&gt;get_h_nelem method returns the estimate of the final size of the hash table.
The DB-&gt;get_h_nelem method may be called at any time during the life of the
application.
The DB-&gt;get_h_nelem method
returns a non-zero error value on failure
and 0 on success.

Parameters 
 h_nelemp<ul compact><li>The DB-&gt;get_h_nelem method returns the
estimate of the final size of the hash table in h_nelemp.</ul>
 
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 Class
<a href="../../db4-devel-4.7.25/api_c/db_class.html">DB</a>
 See Also
<a href="../../db4-devel-4.7.25/api_c/db_list.html">Databases and Related Methods</a>
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