You have been asked to create a mobile application which will be used for submitting orders by users of a popular E-Commerce site. The application is built to work with Autonomous Transaction Processing - Serverless (ATP-S) database as the backend and HTML5 on Oracle Application Express as the front end. During the peak usage of the application you notice that the application response time is very slow. ATP-S database is deployed with 3 CPU cores and 1 TB of memory.
Which two options are expensive or impractical ways to improve the application response times?

• A.Use the Machine Learning (ML) feature of the ATP-S database iteratively to tune the SQL queries used by the application.
• B.Scale up CPU core count and memory during peak times.
• C.Identify the maximum memory capacity needed for peak times and scale the memory for the ATP-S database to that number. ATP-S will scale the memory down when not needed.
• D.Enable auto scaling for CPU cores on ATP-S database.
• E.Identify the maximum CPU capacity needed for peak times and scale the CPU core count for the ATP-S database to that number. ATP-S will scale the CPU core count down when not needed.

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You have deployed art application server irt a private Subnet irt your virtual cloud network (VCN). For the database, you have provisioned an Autonomous Transaction Processing (ATP) serverless instance. However, you are unable to connect to the database instance from your application server.
Which two steps would you need to enable this connectivity?

• A.Create a NAT Gateway and add the following route rule to the route table of private subnet.
  CIDR: 0.0.0.0/0
  Target: NAT Gateway
• B.Add a stateful egress rule to the security list associated with your private subnet.
  Destination CIDR: 0.0.0.0/0
  Protocols: All Protocols
• C.Add an internet gateway to your VCN and add a route rule to your private subnet route table.
  CIDR: 0.0.0.0/0
  Target: Internet Gateway
• D.Add a remote peering connection from your VCN to the ATP VCN

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Which three scenarios are suitable for the Oracle Infrastructure (OCI) Autonomous transaction Processing Server less (ATP-S) deployment?

• A.well established, online auction marketplace is running an application where there is database usage 24×7 but also has peaks of activity that the hard to predict when the peaks happen, the total activities may reach 3 times the normal activity level
• B.A small startup is deploying a new application fen eCommerce and it requires database to store customers' transactions the team b of what the load will look like since it is a new application.
• C.A midsize company is considering migrating its legacy on premises MongoDB database to Oracle Cloud Infrastructure (OCI). The database has significantly higher workloads on weekends than weekdays
• D.A developer working on an Internal project needs to use a database during work hours but doesn't need It during nights or weekends. the project budget requires her to keep costs low.
• E.A manufacturing company is running Oracle E-Business Suite application on premises. They are looking to move this application to OCI and they want to use a managed database offering for their database tier.

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You are responsible for migrating your on-premises legacy databases on 11.2.0.4 version to Autonomous Transaction Processing - Dedicated (ATP-D) in Oracle Cloud Infrastructure (OCI). As a solution architect, you need to plan your migration approach.
Which three options do you need to implement together to migrate your on-premises databases to OCI?

• A.Retain changes to Oracle shipped privileges, stored procedures or views in the on-premises databases.
• B.Retain all legacy structures and unsupported features (e.g. legacy LOBs) in the on-premises databases for migration.
• C.Use Oracle GoldenGate replication to keep on-premises database online during migration.
• D.Convert on-premises databases to PDB, upgrade to 19c, and encrypt.
• E.Use Oracle Data Guard to keep on-premises database always active during migration.
• F.Launch Autonomous Transaction Processing - Dedicated database in OCI.

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You are working on the migration of the web application infrastructure of your company from on-premises to Oracle Cloud Infrastructure. You need to ensure that the DNS cache entries of external clients will not direct them to the on-premises infrastructure after switching to the new infrastructure.
Which of the following options will minimize this problem?

• A.Reduce the TTL of the DNS records before the switch.
• B.DNS changes propagate fast enough that it is not necessary to take any action.
• C.Increase the TTL of the DNS records after the switch.
• D.Increase the TTL of the DNS records before the switch.
• E.Reduce the TTL of the DNS records after the switch.

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