Monday, November 26, 2018

How to run concurrent program gather schema statistics front-end in R12

Hiya Buddies!!!
It is very easy steps to submit the concurrent request for Gather Schema Statistics from front-end.
So, we would like explain here as How to run concurrent program Gather Schema Statistics.

1. We need to login EBS (Oracle Applications) front-end url as SYSADMIN user and Responsibility as System Administrator

If you are not sure about EBS url, you can login to back-end host and follow below

Steps:

$hostname;id
ebs.oracle.com;applmgr
$. ./APPSEBS_ebs.env
$echo $TWO_TASK
EBSPROD

$grep login $CONTEXT_FILE
<you will get the ebs url as output...>

2. Here, we need to submit a Request, follow navigation as shown below:
 Navigate to: Request > Run.

In Name: Select as : Gather Schema Statistics

i.e. Press "f11" then type "Gather Scehma Statistics" thne Press "CTRL and F11" together.

You will get a pop-up with some options such as Schema Name, Estimate_percent, Degree etc...

3. Enter the appropriate parameters. This can be run for specific schema's by specifying the schema name or entering 'ALL' to gather statistics for every schema in the database.

4. Submit the gather schema statistics program.

Estimate_percent
Percentage of rows to estimate. If you left empty it will take by default to 10%.
The valid range is 0-99. A higher percentage will be more accurate, but it will take longer time to run.

Degree
Here, we enter the Degree of parallelism. If we do not enter, it will take by default values to like min(cpu_count, parallel_max_servers).

And modifying the degree of parallelism on a table can cause the plan to change.
In a easy language, increasing the degree of parallelism is likely to make full table scans appear cheaper and more attractive
while reducing it will make Full Table Scans look less attractive.

Example which we have done...
Degree - 4

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