Connect OAC with ADW

To connect OAC with ADW requires two configurations. One connection for use with DV and one for use with OAC Answers & Dashboards.

To create both connections, first download the Security Wallet from ADW and create the Admin Password (if not already done).

Prepare configuration of ADW

Download Wallet:

1) Go to ADW instance and click DB Connection Button

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3) click Download Wallet

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which stores the .zip file to you local drive:

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This .zip file can already be extracted, since the tnsnames.ora and the cwallet.sso file are needed for later steps:

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Set Admin Password

If not already done navigate to the ADB Service Console

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and click Administration and set the Admin password:

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Configure Connection for ADW of OAC (Answers & Dashboards)

To configure the connection to ADW for Answers and Dashboards of OAC navigate to the OAC Service with a similar URL like below:

https://***tenant.name***.analytics.ocp.oraclecloud.com/dv/ui?pageid=home

and click on Console:

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click on Connections under Configuration and Administration

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click on Upload wallet on the right Burger Menu:

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This allows to upload the previously downloaded wallet from the hard drive (you may need to acknowledge a virus scan warning before):

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After uploading the Wallet successfully a success message will be displayed:

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After click the Burger Menu on the right again the button will now display “Replace Wallet” instead of “Upload Wallet”:

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After the Wallet has been uploaded, the connection can be defined using the Create Button on the right. Within this Menu its important to select “Host, Port and Service Name” from the Connect Using dropdown Menu and enable SSL.

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The Host, Port and Service name can be retrieved from the extracted tnsnames.ora file of the Wallet. This file can be opened in any editor to check the values:

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The Connection will be displayed in the list:

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A new metadata model can now be created and uploaded to OAC using this connection.

Configure Connection for ADW of DV (Data Visualisation)

On the Homepage of OAC click Data and select Connection:

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click ADW from the available connection types:

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specify the connection details and upload the extracted sso credential files from the wallet (cwallet.sso):

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The connection will be displayed in the list of connections:

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After the connection is established, a Data Set can be created using this Connection to ADW.

ADWC Performance Benchmark on SSB Schema

The SSB Schema is a generated database schema, that can be used to evaluate the Performance of a Datawarehouse system. This is used to evaluate the performance between ADWC in the cloud and a local Oracle Database which is running within a Virtual Box image on a Laptop. This test is not conducted under test lab conditions and should only provide a rough order of magnitude.

System (Hardware) Baseline

The following instances have been used for the Performance test.

ADWC Trial

based on Hardware specification shown:

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This instances is only used as reference, since the sizing (with 2 CPUs) and query performance for some queries based on the same SSB schema are publically available.

ADWC

instance which only uses 1 CPU

VM Image

with 4GB Ram

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and 1 CPU

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Based on Laptop Host system (Lenovo Yoga 370 Laptop) with:

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The image runs Oracle Database 12c R2 Enterprise Edition, with no specific/tuned configuration (parameters) for Datawarehousing.

System Schema Baseline

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Benchmark Performance

For Prologue Queries based on these examples. As mentioned before, for the ADW instance “ADWC Trail”, some queries run times are publically available. These queries have also been executed within the other instances. The runtimes of the ADWC Trail have only been used as reference:

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SSB Queries, as outlined here and here (Oracle Documentation).  The below shows the query run-times for the ADWC and local Oracle Database (running as a Virtual Box image). The connection to the ADWC instance is made with the high connection type. When using the medium or low connection type, all queries were showing longer response times (as expected). Thus, the high connection type has been used for conducting the Benchmark.

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The Excel file containing the system baseline in terms of number of records, queries and run-time results can be downloaded here.

Below is a galary of the executed SSB Queries on ADW and Virtual Box Oracle Database 12c: