Dear sirs:
 I've add a login named "webmaster" on my "yry_base" sybase server, then I also add the user "webmaster". And when I execute such PHP code:

<?
    $idSql = @sybase_pconnect( "yry_base", "webmaster", "hattie_i_love_you");
    @sybase_select_db( "WebDB", $idSql );
    if( $idSql )
    {   $ret = @sybase_query( "exec sp_tables", $idSql );
        ......   

I got nothing from browser, and I checkd the file apache/logs/error_log, found some lines like:

[Mon Apr 24 18:19:04 2000] [notice] child pid 1123 exit signal Segmentation fault (11)

Then I disabled some lines, I found it was the line  sybase_query( "exec sp_tables", $idSql ) cause the error.

Please check it, thanx!

B.Regards,
 York. 
   2000-04-25 AM. China.