自治事务在 Oracle 中有自己的会话吗？

Question

我有一个问题，可能是由于分布式事务。在手册中说：

When the first insert, update, or delete operation on a spatial table (one with a spatial index) is performed in a distributed transaction, all subsequent insert, update, or delete operations on the table, as well as any prepare to commit operation (the first branch to prepare a commit), in the transaction should happen in the same session as the first operation.

由于我在进行自主交易，我想知道它们是否发生在同一个会话中，或者是否为它们打开了一个单独的会话。

感谢您的帮助

Answer 1

一个会话可以有多个事务，所以这一切都在一个会话中完成。

SQL> create table t ( n number);

Table created.

SQL>
SQL> create or replace
  2  procedure p1 is
  3      pragma autonomous_transaction;
  4  begin
  5      insert into t values ( sys_context('userenv','sid'));
  6      commit;
  7  end;
  8  /

Procedure created.

SQL> create or replace
  2  procedure p2 is
  3      pragma autonomous_transaction;
  4  begin
  5      insert into t values ( sys_context('userenv','sid'));
  6      commit;
  7      p1;
  8  end;
  9  /

Procedure created.

SQL> create or replace
  2  procedure p3 is
  3      pragma autonomous_transaction;
  4  begin
  5      insert into t values ( sys_context('userenv','sid'));
  6      commit;
  7      p2;
  8  end;
  9  /

Procedure created.

SQL>
SQL> exec p3;

PL/SQL procedure successfully completed.

SQL> select * from t;

         N
----------
       982
       982
       982

自治事务在 Oracle 中有自己的会话吗？

Do autonomous transactions have their own session in Oracle?

oracle

session

transactions

distributed