UNIX for Dummies Questions & Answers

Hello,

I'm working in a project where several procedures are programmed using UNIX scripts.

One of these scripts is launched in several threads. When performing these threads an scp command to another server it gives out. This error happens only sometimes, others not and each time for a different amount of threads. It seems to be a problem wih simultaneous connections to the same server as the scp is performes more or less at the same time for all threads. Does anybody know how to check the number of simultaneous connections allowed in a UNIX server?

Thanks and best regards,

Héctor

What is the distribution that you are using ?

It's a SUN Solaris 8 Server.

Hi,

I'm not sure , but exwcuting uname -X I get folowing data:

System = SunOS
Node = xxxxxxxxx
Release = 5.8
KernelID = Generic_108528-27
Machine = sun4u
BusType = <unknown>
Serial = <unknown>
Users = <unknown>
OEM# = 0
Origin# = 1
NumCPU = 2

Thanks and best regards,

Héctor

what is the value of

Code:

sysctl fs.file-max

this would give the maximum no of descriptors which refers to the connections possible.

I might be wrong in this approach !

you need to check for the values in /etc/system as well.

sysctl fs.file-max gives out no output but an error.

The content of /etc/system (The important part I think ) is:
forceload: drv/vxdmp
forceload: drv/vxio
forceload: drv/vxspec
forceload: drv/dad
forceload: drv/sd
forceload: drv/ssd
rootdev:/pseudo/vxio@0:0
set vxio:vol_rootdev_is_volume=1
* vxvm_END (do not remove)

* vxfs_START -- do not remove the following lines:
* VxFS requires a stack size greater than the default 8K.
* The following value allows the kernel stack size to be
* increased to 24K for Solaris 7, 8 and 9, and 16K for Solaris 2.6.
set lwp_default_stksize=0x6000
* vxfs_END


* vxfs_START -- do not remove the following lines:
* VxFS requires a stack size greater than the default 8K.
* The following value allows the kernel stack size to be
* increased to 24K for Solaris 7, 8 and 9, and 16K for Solaris 2.6.
set rpcmod:svc_default_stksize=0x6000
* vxfs_END


* vxfs_START -- do not remove the following lines:
* VxFS requires a stack size greater than the default 8K.
* The following value allows the kernel stack size to be
* increased to 24K for Solaris 7, 8 and 9, and 16K for Solaris 2.6.
set lwp_default_stksize=0x6000
* vxfs_END


* vxfs_START -- do not remove the following lines:
* VxFS requires a stack size greater than the default 8K.
* The following value allows the kernel stack size to be
* increased to 24K for Solaris 7, 8 and 9, and 16K for Solaris 2.6.
set rpcmod:svc_default_stksize=0x6000
* vxfs_END

set nfssrv:nfs_portmon=1
set noexec_user_stack_log=1
set noexec_user_stack=1

* Begin MDD database info (do not edit)
set md:mddb_bootlist1="dad:12:16"
* End MDD database info (do not edit)
* BEGIN ORACLE
*
forceload:sys/shmsys
forceload:sys/semsys
forceload:sys/msgsys
set shmsys:shminfo_shmmax=4294967295
set shmsys:shminfo_shmmin=1
set shmsys:shminfo_shmmni=2048
set shmsys:shminfo_shmseg=2048
set semsys:seminfo_semmns=15000
set semsys:seminfo_semmni=1500
set semsys:seminfo_semmsl=1024
set semsys:seminfo_semmap=2000
set semsys:seminfo_semmnu=2000
set semsys:seminfo_semume=100
set semsys:seminfo_semopm=100
set msgsys:msginfo_msgmax=65536
set msgsys:msginfo_msgmnb=65536
set msgsys:msginfo_msgtql=1550
set msgsys:msginfo_msgseg=25088
*
* END ORACLE
*
* Begin Tuxedo
*
set semsys:seminfo_semvmx=32767
set semsys:seminfo_semaem=16384
set msgsys:msginfo_msgssz=750
set msgsys:msginfo_msgmni=100
*
* End Tuxedo
*
*
* BEGIN ASAP
*
set rlim_fd_max=2048
set pt_cnt=4096
set rstchown=0
set maxusers=1024
set max_nprocs=2048


Can you please inform what I Should change