How is Oracle SQL different from MySQL?

Key Differences Between Oracle and MySQL MySQL provides a GPL software license, while Oracle doesn’t. Oracle is compatible wiht Linux, UNIX, Windows, Mac OS X and z/OS. Oracle is better for enterprise deployments, while MySQL is suited for small to medium scale. MySQL is free, while Oracle requires a licensing fee.

What approach should we stick to importing data from Oracle to MS SQL Server?

Solution

• Use a tool such as Microsoft SQL Server Migration Assistant for Oracle.
• Use SQL Server Integration Services (SSIS)
• Create a Linked Server on SQL Server pointing to the Oracle database.
• Export Oracle data to a CSV file and then import the data to SQL Server via bulk copy.

Is Oracle and MySQL are same?

MySQL and Oracle SQL are both RDBMSs (relational database management systems) owned by Oracle Corporation. MySQL is built to be primarily free and open-source, while Oracle is primarily built to be commercial and paid. MySQL is also more customizable than Oracle which is because Oracle is a finished product.

What is the difference between float and double in MySQL?

A FLOAT is for single-precision, while a DOUBLE is for double-precision numbers. MySQL uses four bytes for single-precision values and eight bytes for double-precision values. There is a big difference from floating point numbers and decimal (numeric) numbers, which you can use with the DECIMAL data type.

What are the steps in data migration?

6 Key Steps in a Data Migration Strategy

1. Explore and Assess the Source. Before migrating data, you must know (and understand) what you’re migrating, as well as how it fits within the target system.
2. Define and Design the Migration.
3. Build the Migration Solution.
4. Conduct a Live Test.
5. Flipping the Switch.
6. Audit.

Is SQL Server Migration Assistant free?

SQL Server Migration Assistant (SSMA) is a free supported tool from Microsoft that simplifies database migration process from Access to SQL Server, Azure SQL Database and Azure SQL Database Managed Instance.

How does SSIS connect to Oracle database?

Connecting to Oracle in SSIS is a two-step process. First you install the Oracle client software, and then you use the OLE DB provider in SSIS to connect to Oracle. To be sure, the Microsoft Data Access Components (MDAC) that comes with the operating system include an OLE DB provider for Oracle.

What is parallel processing in SQL Server?

Parallel processing is suitable for long-running operations in low-concurrency environments. Parallel processing is less suitable for OLTP style databases. The SQL performs at least one full table, index or partition scan Parallel processing is generally restricted to operations that include a scan of a table, index, or partition.

How to migrate from one Oracle database to another?

This tool will basically help you: Connect to your source DBMS(ORACLE) Connect to destination DBMS(MySQL) Specify schema and tables in the ORACLE DBMS you want to migrate. Press a “Transfer” button to Run the migration process(running inbuilt migration queries)

Is it possible to import and export data in parallel in Oracle?

Every morning, new data is imported into the Oracle database, replacing some thousands of rows. Copying this process is not a problem, so we could, in theory, import in both databases in parallel. But, and here the challenge lies, for this to work we need to have an export from the Oracle database with a consistent state from one day.

How does Oracle execute statements in parallel?

Oracle executes the statement as a sequence of operations. Each operation is performed in parallel, if possible. When statement processing is completed, the coordinator returns any resulting data to the user process that issued the statement and returns the parallel execution servers to the server pool.