cannot compute AVG(X), VARIANCE(X) or STDDEV(X), without COUNT(X) or SUM(X)

Incremental refresh of summaries requires a COUNT(X) column in order to incrementally refresh AVG(X). It requires both SUM(X) and COUNT(X) columns in order to in refresh STDDEV(X) or VARIANCE(X)

How to Solve :

Make sure that the required columns are part of the summary definition if incremental refresh capability is desired.

Master process string violated startup protocol.

The master process whose name is listed started up but then exited before notifying the creating process that it was finished with initialization.

How to Solve :

Refer to any following error messages for possible actions. Check the trace log for the failed process to see if there is any information about the failure. Correct the error, if possible, and try the operation again. If the error occurs again, contact Oracle Customer Support and report the error.

summary contains AVG without corresponding COUNT

Incremental refresh of summaries with AVG(X) requires a COUNT(X) column to be included in the summary definition

Make sure that the required columns are part of the summary definition if incremental refresh capability is desired.

timeout waiting for master process response

After creating the job infrastructure and sending the initial message to the master process, it failed to respond in the allotted time and most likely aborted during startup.

Retry the open or attach request. Contact Oracle Customer Support if the problem persists.

summary contains STDDEV without corresponding SUM & COUNT

Incremental refresh of summaries with STDDEV(X) requires COUNT(X) and SUM(X) columns to be included in the summary definition

Make sure that the required columns are part of the summary definition if incremental refresh capability is desired.