In answer to the original question:
Exclusive: means that the table in question is locked by a user exclusively.
This is usually used as shown below by Ep, to stop other users *modifying*
the data within the table (they can still select).
Row Exclusive: You can specify an init parameter ROW_LOCKING, this will
force a lock to be applied each time a row is updated.
None: Means what it says on the tin:) There are no locks applied.
HTH
Mark
-----Original Message-----
Pierce
Sent: Thursday, April 12, 2001 07:06
To: Multiple recipients of list ORACLE-L
Partial answer only:
See below for a code example (something I use to irritate
users if run during normal data enty times!).
It shows how how to lock a table for "mass update" while
running in SQL*plus (amazing enough, it was probably
originally found in an Oracle manual).
Regards,
Eric
---begin---
whenever sqlerror exit sql.code ;
lock table STUDENT_MASTER in exclusive mode nowait ;
whenever sqlerror continue ;
---end---
On 12 Apr 2001, at 9:26, Bunyamin K.Karadeniz wrote:
Date sent: Thu, 12 Apr 2001 09:26:40 -0800
To: Multiple recipients of list ORACLE-L <[EMAIL PROTECTED]>
> Can anyone explain the lock modes written below.What do they mean . And
how will I open the lock?
> Regards
>
> Exclusive
> Row Excl.
> None
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