Dear Quanah, Thank you for your prompt reply.
> back-bdb is deprecated, I suggest you use back-mdb instead. Would you tell me why you recommend using back-mdb? It's because the collision of the hash key in the bdb index occurs more easily than in the mdb index? Best Regards, -- ********************************************* Yoshinori Nishino NEC Soft, Ltd. E-MAIL: nishino-yoshin...@mxc.nes.nec.co.jp *********************************************