B.2 XDMG Process

The XDMG (Exadata Automation Manager) process initiates automation tasks used for monitoring storage. This background process monitors all configured Oracle Exadata Storage Servers for state changes, such as replaced disks, and performs the required tasks for such changes. Its primary task is to watch for inaccessible disks and cells, and to detect when the disks and cells become accessible. When the disks and cells are accessible, the XDMG process initiates the ASM ONLINE process, which is handled by the XDWK background process. The XDMG process runs in the Oracle ASM instances.