Answers depend on the EJB server. Even though an EJB server essentially is a
TP monitor, some EJB servers don't really have one. GemStone/J answers
below...
> -----Original Message-----
> From: Pascuzzi Domenico [SMTP:[EMAIL PROTECTED]]
> Sent: Monday, December 13, 1999 6:27 AM
> To: [EMAIL PROTECTED]
> Subject: Tx manager
>
> I'd like to know if EJB framework
> 1. has its own Transaction Manager
YES.
> 2. when it's used in substitution of DBMS Transaction Manager
> and if
No, transaction resources (e.g. JDBC connections), participate in the EJB
servers transactions.
> 3. JDBC SQL Statement lock rows accessed automatically.......
Depends on the configuration of the underlying database. Some do row locks
automatically, some do row locks based on isolation level settings of the
JDBC connection, some do row locks based on the syntax of select statements
"select X from Y for update of Z"...
> Thank you!
>
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