Martin Haltmayer <Martin.Haltmayer_at_0800-einwahl.de> wrote:
> In 8.1.5 you can use autonomous transactions to run the dbms_alert in.
> Pre-8.1.5 in Unix you can use a trigger before insert that writes to a pipe with
> utl_file. Another external process reads from that trigger and sends e-mail or
> does something useful, e. g. write a message to a screen.
> Martin
How about an external proc feature in 8.*.* ?
> kal121_at_my-deja.com wrote:
>>
>> Has anyone had success implementing alerts?
>>
>> I have created a table that will have oracle errors written to it by an
>> application. I created a trigger that will signal an alert when this
>> error table is inserted.
>>
>> Problem is, I'm not sure how to monitor for these alerts. If I open
>> another SQL*Plus session, I run a procedure that waits and listens for
>> alerts. Problem is, it seems you have to specify a length of time for
>> it to listen to alerts. (the timeout)
>>
>> I certainly don't know *when* or even if the alerts will be triggered,
>> so how can I know beforehand what to set the time to? Besides, it
>> doesn't print the alerts to the screen until AFTER the specified time
>> period is elapsed. How useless is this? If I set the time period to one
>> hour, the procedure will listen for alerts for one hour only. I need it
>> to listen continuously.
>>
>> Another way I've seen is to wait for a specified number of alerts to
>> occur, then after that threshold is reached, you can print the alerts
>> to the screen. This method assumes you can wait that long to see your
>> alerts. Not very helpful when you want to see your alerts immediately
>> when they happen, not after "x" alerts occur.
>>
>> Also, I'd like for the alerts to email me - that would be useful. I
>> suppose this would involve DBMS_JOB as well?
>>
>> Does anyone have some sample code that would demonstrate this?
>>
>> (I've read up on ALERTS in two books so far, but the examples are
>> limited to what I've described above) Either I am missing something
>> critical about how alerts work or else alerts aren't very useful for
>> what I'm trying to do. I hope it is the former case.
>>
>> Thanks
>>
>> Sent via Deja.com http://www.deja.com/
>> Before you buy.
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Received on Thu Apr 27 2000 - 00:00:00 CDT
