Re: TNS-12500: TNS:listener failed to start a dedicated server process

From: Steve Howard <stevedhoward_at_gmail.com>
Date: Thu, 8 Jan 2009 06:34:18 -0800 (PST)
Message-ID: <a96f25da-02ad-4626-8b0d-942f378d56cb_at_y1g2000pra.googlegroups.com>

On Jan 8, 9:29 am, shweta.kapar..._at_googlemail.com wrote:
> On Jan 8, 1:59 pm, Steve Howard <stevedhow..._at_gmail.com> wrote:
>
>
>
> > On Jan 8, 8:57 am, shweta.kapar..._at_googlemail.com wrote:
>
> > > Hi All
>
> > > We are badly being hit by the following error:
>
> > > 08-JAN-2009 12:43:05 * (connect_data=(server=dedicated)
> > > (service_name=XX)(INSTANCE_ROLE=primary)(failover_mode=(type=session)
> > > (method=basic)(backup=YY)(retries=180)(delay=5))(CID=(PROGRAM=oracle)
> > > (HOST=ZZ)(USER=oracle))(INSTANCE_NAME=AAAA)) * (ADDRESS=(PROTOCOL=tcp)
> > > (HOST=<IP>)(PORT=<PORT>)) * establish * BB * 12500
> > > TNS-12500: TNS:listener failed to start a dedicated server process
> > >  TNS-12540: TNS:internal limit restriction exceeded
> > >   TNS-12560: TNS:protocol adapter error
> > >    TNS-00510: Internal limit restriction exceeded
> > >     HPUX Error: 11: Resource temporarily unavailable
>
> > > This is repeating at the following interval. ( as a sample.).. It is
> > > intermittent.
>
> > > Start                    End
> > > 08/01/2009 12:40:03     08/01/2009 12:40:13
> > > 08/01/2009 12:41:03     08/01/2009 12:41:04
> > > 08/01/2009 12:42:04     08/01/2009 12:42:04
> > > 08/01/2009 12:43:04     08/01/2009 12:43:04
> > > 08/01/2009 12:43:05     08/01/2009 12:43:05
>
> > > In between above intervals connections are successful
>
> > > We are using "dedicated Server" connection.
>
> > > CPU /Mem utlisation is normal. No change seen in the pattern.
>
> > > Regards
>
> > > Shweta.
>
> > Hi Shweta,
>
> > How do your OS kernel parameter limits look, i.e. open files, max
> > processes, etc.?
>
> > Regards,
>
> > Steve- Hide quoted text -
>
> > - Show quoted text -
>
> Hi Steve
>
> We have 05 databases running in Host -A
>
> I have taken below o/p  from 1st database. We ra facing this issue in
> all the databases almost at the same time.
>
> SQL>select * from v$resource_limit;
>
> RESOURCE_NAME                  CURRENT_UTILIZATION MAX_UTILIZATION
> INITIAL_AL  LIMIT_VALU
> ------------------------------ ------------------- ---------------
> ---------- ----------
> processes                                      135
> 256       1000       1000
> sessions                                       134
> 252       1105       1105
> enqueue_locks                                   72
> 361      14154      14154
> enqueue_resources                               72
> 72      50000  UNLIMITED
> ges_procs                                      133
> 253       1001       1001
> ges_ress                                     37791
> 50079      90367  UNLIMITED
> ges_locks                                    28140
> 42011      96306  UNLIMITED
> ges_cache_ress                                5361
> 8522          0  UNLIMITED
> ges_reg_msgs                                   222
> 250       2230  UNLIMITED
> ges_big_msgs                                    17
> 28       2230  UNLIMITED
> ges_rsv_msgs                                     0
> 0       1000       1000
> gcs_resources                                72634           81356
> 122432     122432
> gcs_shadows                                  26643
> 26663      67337      67337
> dml_locks                                        0
> 36       1024  UNLIMITED
> temporary_table_locks                            0               2
> UNLIMITED  UNLIMITED
> transactions                                    14
> 66       1215  UNLIMITED
> branches                                         2
> 28       1215  UNLIMITED
> cmtcallbk                                        4
> 29       1215  UNLIMITED
> sort_segment_locks                             134             137
> UNLIMITED  UNLIMITED
> max_rollback_segments                           11
> 11        244        244
> max_shared_servers                               1
> 1         20         20
> parallel_max_servers                             4
> 121        241        241
>
> 22 rows selected.
>
> Thanks.

Hi Shweta,

I meant on the OS itself, i.e. HP-UX kernel limits. I have seen exceptions such as the one you posted when processes, open files, etc. were approaching/at their maximum limit as allowed/configured by the system administrator.

HTH, Steve Received on Thu Jan 08 2009 - 08:34:18 CST