It waits for an (instance-wide) enqueue which will not succeed until the all
transactions have completed, giving an appearance of a hang.
- Original Message -----
To: Multiple recipients of list ORACLE-L <[EMAIL PROTECTED]>
Sent: Thursday, June 19, 2003 2:39 PM
> Food for thought...
> How does Oracle know that an existing transaction (which may be more
> than the current statement) will not alter data in the RO Tablespace
> until the transaction is completed (rollback/commit)?
>
> --
> Daniel W. Fink
> http://www.optimaldba.com
>
>
> Rachel Carmichael wrote:
>
> >The admin guide doesn't say "no transactions in the database". In fact,
> >it specifically says in the tablespace:
> >
> >" You do not have to wait for transactions to complete before issuing
> >the ALTER TABLESPACE...READ ONLY statement. When the statement is
> >issued, the target tablespace goes into a transitional read-only mode
> >in which no further DML statements are allowed, though existing
> >transactions that modified the tablespace will be allowed to commit or
> >rollback. Once this occurs, the tablespace is quiesced, with respect to
> >active transactions."
> >
> >There were other transactions in the database, but none affecting that
> >tablespace.
> >
> >The concepts guide is somewhat ambiguous and could be read either as
> >"in the database" or "against the tablespace" since it isn't specified.
> >
> >
> >Have I mentioned lately that I hate the docs? :)
> >
> >
> >
>
>
>
> --
> Please see the official ORACLE-L FAQ: http://www.orafaq.net
> --
> Author: Daniel W. Fink
> INET: [EMAIL PROTECTED]
>
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--
Please see the official ORACLE-L FAQ: http://www.orafaq.net
--
Author: Binley Lim
INET: [EMAIL PROTECTED]
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Received on Wed Jun 18 2003 - 22:27:24 CDT
