Just to be clear: db_block_buffers is still permitted in Oracle9i, so you technically you can use it. It's just not ideal anymore, especially when there are new data-buffer cache parameters like db_2k_cache_size db_4k_cache_size db_8k_cache_size db_16k_cache_size db_32k_cache_size db_cache_size db_keep_cache_size db_recycle_cache_size Curious what the alert.log says. Did you save the original init.ora (or save original settings), and if so, can it be used to start the database? -----Original Message----- From: Deepa S. Kale [mailto:deepask@xxxxxxxxx] Sent: Wednesday, November 03, 2004 10:59 PM To: askdba@xxxxxxxxxxxxx Cc: ASKDBA; askdba-bounce@xxxxxxxxxxxxx Subject: [askdba] Re: DB_BLOCK_BUFFERS - HELP what message comes in ur alert.log file ? because db_block_buffer parameter is deprecated in 9i by DB_CACHE_SIZE parameter. so my suggestion is instead of db_block_buffer , u use db_block_size parameter... = Also, DB_BLOCK_BUFFERS cannot be combined with the new dynamic = DB_CACHE_SIZE parameter; combining these parameters in the same parame= ter file will produce an error. DB_BLOCK_BUFFERS is retained for backward = compatibility. = = = = = Deepa Kale -DBA Jyoti Structures - Nasik(IT) = VuCanDo = <vuquyen@xxxxxxxx = m> = To Sent by: ASKDBA <askdba@xxxxxxxxxxxxx> = askdba-bounce@fre = cc elists.org = Subj= ect [askdba] DB_BLOCK_BUFFERS - HELP= 04-11-2004 07:58 = AM = = = Please respond to = askdba@freelists. = org = = = Hi Guys, I was increased the DB_BLOCK_BUFFERS from 0 to 4096. After shutdown and restart the database, this is what I got an errors. I need help to start up the database that run on NT Server running on Oracle 18.104.22.168 ERROR: ORA-01034: ORACLE not available ORA-27101: shared memory realm does not exist Thanks, Vu = This email and any files transmitted with it are confidential and intended solely for the use of the individual or entity to whom they are addressed. If you have received this email in error please notify the system manager. This message contains confidential information and is intended only for the individual named. If you are not the named addressee you should not disseminate, distribute or copy this e-mail.