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ORA-12500: TNS:listener failed to start a dedicated server process [message #85855] Wed, 04 August 2004 07:37 Go to next message
Stupid
Messages: 8
Registered: November 2001
Junior Member
My Oracle database sits on Windows 2000 Server with 3GB memory.

It works fine, but once a while some users will get this "ORA-12500: TNS:listener failed to start a dedicated server process" when they try to access the database via our ASP.NET IIS server.

Of course, if they wait a bit and come back in, everything works fine. I did select count(*) from v$process, it shows 139 and my process is set at 500.

This really starts to bother me as it interrupt our service to our customers.
Re: ORA-12500: TNS:listener failed to start a dedicated server process [message #85857 is a reply to message #85855] Wed, 04 August 2004 07:39 Go to previous messageGo to next message
Stupid
Messages: 8
Registered: November 2001
Junior Member
Sorry, it's Oracle 8i 8.1.6.
Re: ORA-12500: TNS:listener failed to start a dedicated server process [message #86098 is a reply to message #85855] Tue, 31 August 2004 11:29 Go to previous messageGo to next message
Greg
Messages: 35
Registered: July 2000
Member
has anyone helped you with this? Have you gotten around it somehow? I'm having the same problem. try oln_dba@olntv.com if you have ideas PLEASE!!
Re: ORA-12500: TNS:listener failed to start a dedicated server process [message #86146 is a reply to message #86098] Fri, 03 September 2004 15:27 Go to previous messageGo to next message
Stupid
Messages: 8
Registered: November 2001
Junior Member
can you post your pfile here? along with your machine's configuration.
Re: ORA-12500: TNS:listener failed to start a dedicated server process [message #86180 is a reply to message #86146] Tue, 07 September 2004 05:14 Go to previous messageGo to next message
Greg
Messages: 35
Registered: July 2000
Member
of course:

It's a Win2K machine (sp4) w/ 2.8G Xeon and 2.8G RAM. We're running Oracle 9i (9.2.0.1.0) in NOARCHIVELOG mode.

Veritas Backup Exec has it's little agent running on this machine as well (beserver.exe and bengine.exe), otherwise, nothing of note. I started to think that maybe my S/P GA's were underallocated, but the "advice" in EM indicates otherwise. What say you?

spfile:
-----------------------------------
*.aq_tm_processes=1
*.background_dump_dest='D:oracleadmindealbdump'
*.compatible='9.2.0.0.0'
*.control_files='d:oracleoradatadealcontrol01.ctl','d:oracleoradatadealcontrol02.ctl','d:oracleoradatadealcontrol03.ctl'
*.core_dump_dest='D:oracleadmindealcdump'
*.db_block_size=8192
*.db_cache_size=50331648
*.db_domain=''
*.db_file_multiblock_read_count=16
*.db_name='deal'
*.fast_start_mttr_target=300
*.hash_join_enabled=TRUE
*.instance_name='deal'
*.java_pool_size=16777216
*.job_queue_processes=10
*.large_pool_size=16777216
*.open_cursors=600
*.pga_aggregate_target=25165824
*.processes=700
*.query_rewrite_enabled='FALSE'
*.remote_login_passwordfile='EXCLUSIVE'
*.shared_pool_size=100663296
*.sort_area_size=524288
*.star_transformation_enabled='FALSE'
*.timed_statistics=TRUE
*.undo_management='AUTO'
*.undo_retention=10800
*.undo_tablespace='UNDOTBS1'
*.user_dump_dest='D:oracleadmindealudump'
*.utl_file_dir='D:oracleadmindealutl_file'

Thanks,
Greg Johnson
Re: (solution - check if the DB server is running) A-12500: TNS:listener failed [message #86657 is a reply to message #85855] Sun, 17 October 2004 20:26 Go to previous message
rahul sarup
Messages: 1
Registered: October 2004
Junior Member
the DB server may be down... i faced the same problem and it was because the DB server was not running. i restarted the db server, and all worked fine
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