Connection.setAutoCommit (false); She creates a transaction next to the database?

I'm curious to know what the transaction is started next to the database? I use oracle as database and ojdbc6 driver to connect to the db jar.

I'm also curious to know what exactly is a connection? There I can relate to a database session? taken do allow to install a java application on the database server?

Thank you!

I'm curious to know what the transaction is started next to the database? I use oracle as database and ojdbc6 driver to connect to the db jar.

I'm also curious to know what exactly is a connection? There I can relate to a database session? taken do allow to install a java application on the database server?

Thank you!

Non - autocommit affecting false does NOT create a transaction.

You can EASILY search the Web for definitions of terms such as the transaction, logon session.

The Java tutorials has a track for "aid Operations."

https://docs.Oracle.com/javase/tutorial/JDBC/basics/transactions.html

Turn off autocommit Mode

When a connection is created, it is in autocommit mode. This means that each SQL statement is treated as a transaction and is automatically committed right after his execution. (To be more precise, the default is for a SQL statement to be engaged when it is finished, not when it is executed. A statement is completed when all its result sets and update counts were recovered. In almost all cases, however, a statement is completed and therefore committed, just after his execution.)

How to allow two or more instructions which lie in a transaction is to disable auto-commit mode. This is illustrated in the following code, where con is an active connection:

on.setAutoCommit(false);

The Java API tells you what a 'link'

Connection (Java SE 7 platform)

A connection (session), with a specific database. The SQL statements are executed and results are returned as part of a connection.

See where it says "connection (session)?

And the Oracle documentation can discuss those from the point of view of DB

https://docs.Oracle.com/database/121/CNCPT/Transact.htm#CNCPT117

Introduction to Transactions

A transaction is a logical, Atomic work unit that contains one or more SQL statements. A transaction includes the SQL statements so that they are all committed, which means they are applied to the database, or all canceled, which means that they are cancelled from the database. Oracle database assigns to each transaction a unique identifier called transaction ID.

Oracle transactions obey the basic properties of a database transaction, known as ACID properties. ACID is an acronym for the following:

. . .

After the end of a transaction, the next executable SQL statement automatically starts the following transaction.

. . .

The Oracle documentation also discuss when a transaction begins - which may be different from another database

http://docs.Oracle.com/database/121/SQLRF/statements_10005.htm#SQLRF01705

Use of the SET TRANSACTION statement to establish the current transaction in read-only or read-write, to establish its isolation level, assign it to a specified rollback segment or type a name for the transaction.

A transaction is implicitly starts with any operation that requires a TX lock:

  • When a statement that changes data are issued
  • When a SELECT ... FOR UPDATE instruction is emitted
  • When a transaction is explicitly started with one SET TRANSACTION statement or the DBMS_TRANSACTION package

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