System Jobs 
You use the System Jobs screen to view a list of default SAP Manufacturing Integration and Intelligence (SAP MII) system maintenance tasks, which are run in the background at a system-defined frequency.
The job frequency is a hard-coded value and cannot be changed. Times are based on the time SAP MII was last started.
The following table lists the default system jobs:
Job Name |
Description |
ActivationRequestCleaner |
Removes activation requests that are older than seven days Runs daily |
DataBufferJobScanner |
Processes items in the data buffer queue Runs every minute |
CatalogOldDeleteLogs |
Delete the old tag catalog logs |
CatalogScanInactiveTags |
Checks for inactive tags in the plant historian systems |
IndexingCleaner |
Removes obsolete file references from the index Runs daily |
JCOConnectionMonitor |
Cleans the JCo connections for which the timeout value was reached |
JobHistoryCleaner |
Removes expired entries from the job history table Runs every 30 minutes |
MDO Data Source Watcher |
Monitors the use of Manufacturing Data Object (MDO) data sources When the MDO data source is down, this job runs once a minute to check the status of the data source. When the data source is active again, this job is disabled. When the job is running, all MDO actions, such as queries, inserts, deletes, and so on, are returned as errors. |
MDO Log Cleanup |
Removes MDO log entries that are older than seven days |
MonitorDataCleaner |
Monitors data in the message.Cleanup file |
SecurityObjectReferenceCleaner |
Removes obsolete references to users and roles Runs weekly |
SessionLogger |
Logs session information Runs every 30 minutes |
Shared Property Cleanup |
Removes expired properties Runs every minute |
TempFileCleaner |
Cleans the Temp file table Runs every 60 minutes |
TransactionCacheCleaner |
Removes in-memory transactions Runs every 5 minutes |
TransactionImageCleaner |
Removes transaction images from the database Runs every 5 minutes |
ValueMapCacheCleaner |
Removes value map rules that were not used in the last 24 hours Runs daily |
SQLConnectionTimeoutMonitor |
Removes the connections that were timed out. The Timeout setting is configured in the SQL Transaction Begin action block |
AlertExpirationJob |
Checks for expired alerts |
For detailed frequency and runtime information, see the System Jobs screen.
To view the list of system jobs, on the SAP MII administration menu, choose .