3.5.3 PolyServe MxS Oracle Database Solution Pack Release Notes (August 2008)

Customization 11
Directives
The directives that can appear in the odm.conf file are as follows.
Directive Meaning
logfile File where log messages are appended.
Default: “log”
shared_memory_key
Key to access the node’s shared memory.
Default: 0x4d445350 (PSDM)
semaphore_key Key to access the node’s semaphores.
Default: 0x4d444450 (PSSM)
datafile_perm Permissions used to create database files.
Default: 0660
max_async_io Maximum number of concurrent asynchronous I/O
requests.
Default: 1000
max_file_opens Maximum number of files that ODM will open before
reusing file descriptors. This directive is used to
reserve file descriptors for the application. If ODM
detects that all of the file descriptors or system file slots
are exhausted, then it adjusts max_file_opens
downward, closes some of its files, and tries again.
This number can be exceeded if there are more than
the specified maximum number of files with active
requests. (A request is not rejected if it would cause too
many files to be open.)
In general, it is optimal to set this parameter to a value
larger then the sum of files listed in the data_data_files
view.
Default: 500
elapsed_time If set, ODM will always report a fixed elapsed time for
I/Os. The time is expressed in microseconds.
Default: -1 (the actual time is reported)