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Oracle Forms Web CGI: Error detected -- Error getting least loaded host

Oracle Forms Web CGI: Error detected

Your request cannot be serviced at this time due to the following error:

ERROR: Error getting least loaded host from Load Balancer Server.



This error occurs if Oracle forms metric server does not get updated information on existing clients.
In Forms metric server load balancing, always clients ping back the information about themselves and server just listens to it. In case for some reason none of the clients are alive or have not passed the information or if forms metric server is down then this error is observed.

Sometimes if forms metric server is restarted without restarting client metric server even then this error is observed.

You need to have the following information handy along with the sequence of services to be restarted. Always start the script in the order in which it is shown below.

1. adfrmctl.sh --> Forms server startup script
2. adfmsctl.sh --> Forms metric server startup script
3. adfmcctl.sh --> Forms metric client startup script on all the nodes



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SQL> startup mount pfile='/tmp/initdlfasp12.ora'
ORA-27102: out of memory
Linux-x86_64 Error: 28: No space left on device


This as you can see is on Linux x86 with 64 bit processor. We got this error after we changed SGA on 10gR2 database. So was sure that this is something to do with the OS.

Parameters to check for this are shmall.

shmall is the total amount of shared memory, in pages, that the system can use at one time.

$cat /proc/sys/kernel/shmmax
53687091200

$ getconf PAGE_SIZE
4096

As per Oracle SHMALL should be set to the total amount of physical RAM divided by page size.

Our system has 64GB memory, so change kernel.shmall = 1024 * 1024 * 1024 * 64 / 4096 = 16777216


Once this value is calculated you can modify Linux system configuration file directly.

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