C DCM Metadata Repository

This appendix describes the files, tables, and directories of the DCM metadata repository. You should not edit, relocate, or otherwise change these files and directories; they are described here for information only.

C.1 Repository Farm Files and Tables

The files and tables associated with an Oracle Application Server Farm are stored in ORACLE_HOME/dcm/repository in OracleAS Database-Based Farms and OracleAS File-Based Farms. The contents of the repository are stored as as binary files in the filesystem in the OracleAS File-Based Farm, or as database tables in the OracleAS Database-Based Farm. Table C-1 describes the file and tables.

Table C-1 DCM Metadata Repository Files and Tables

File Name	Table Name	Description
farm	tm_farms	Farm information.
cluster	tm_clusters	Cluster information.
componentCluster	tm_componentclusters	Component information belonging to an instance.
instance	tm_instances	Instance information, belong to a farm (or a farm and cluster)
node	tm_nodes	Information about the host computer.
tag	pm_op_tags	Operation tag map for internal messaging; records runtime states.
obj, tmp directory	pm_objects	Configuration objects and instance attribute objects.
archive	pm_archives	Configuration archive.
member	pm_cluster_membership	Maps objects to clusters and components.
instanceAttr	tm_instance_attrs	Associations between instances and attribute (PM$$InstanceAttribute) objects
archmember	pm_arc_membership	Association of archive and configuration objects.

C.2 Repository Files and Directories

The DCM metadata repository also contains these files and directories:

app.bom

The app.bom file is a bill of material file that stores the names and versions of application objects deployed to the instance.

conf.bom

The conf.bom file is a bill of material file that stores the names and versions of configuration objects in the instance.

cluster.bom

The cluster.bom is a bill of material file that stores information about the cluster to which the instance belongs.

tp.bom

The tp.bom file is a bill of material file that stores information about the topology of the instance, such as the components it comprises.

mutex directory

The mutex directory is used for internal management of OracleAS File-Based Farm and OracleAS Database-Based Farm repositories. It is a placeholder for storage of mutex files for the sequencing of DCM operations within an instance. The mutex file type is related to OracleAS File-Based Farm repostories only; it has no database equivalent.

tmp directory

The tmp directory stores the File Data Base (FDB) object, which is used only in a OracleAS File-Based Farm repository. Despite the directory name, these files are not temporary, and deleting them would render the repository useless. These files are equivalent to the column pm_objects.data in the OracleAS Database-Based Farm repository, and are referenced in the obj table file.