Using Oracle Expert generate report "parameter evaluation was not performed "

[xiongye]

Hi: I use Oracle Expert genetate report
but almost all parameter return:"current value of this parameter was not collected from the cncbus instance" or
"the current value of this parameter was not found in the repository for the cncbus instance "
what is the error?

4.1.4.4 Log buffer size

LOG_BUFFER instance parameter evaluation will not be performed because the current value of this parameter was not collected from the cncbus instance.

4.1.4.5 Open cursors

OPEN_CURSORS instance parameter evaluation will not be performed because the current value of this parameter was not collected from the cncbus instance.

4.1.5 I/O parameter evaluation

Oracle Expert has evaluated the instance parameters which impact I/O resource consumption.

4.1.5.1 Multiblock read count

DB_FILE_MULTIBLOCK_READ_COUNT instance parameter evaluation was not performed because the current value of this parameter was not found in the repository for the cncbus instance.

[SANJAY_G]

Did you collect the statistics before generating Expert Reports?

Sanjay

[Calvin_Qiu]

However, you can set these parameters manually.