How to set event trace in 10g

Hi,
How to set event in oracle 10g, its 11i apps.
Support says that we have to set
To help confirm the analysis if related to\bug can you put in an errorstack forever
on 1426 and 6502.
eg: event="1426 trace name errorstack forever, level 3"
event="6502 trace name errorstack forever, level 3"
Also immediately after the error see if you can run below statement:"
Do i need set this event parameters in init.SID.ora, Please let me know

Danny,
It depends on the level of trace you want to enable. Also, please note you can set the same at the session level, so it depends on what issue you have. If this is a database generic issue, then set it in the init.ora file and bounce the database. If it is a client/session issue, set it at the session level -- See Note: 218105.1
Since the support suggested something specific, then just follow their suggestion.
Regards,
Hussein

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Hi Terry;
Please check :
How to determine which system events are currently being set? [ID 845043.1]
How To List All The Named Events Set For A Database [ID 436036.1]
How to set EVENTS in the SPFILE [ID 160178.1]
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Alter system/session set events '.............' command!!

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SQL> r
1 DECLARE
2     OUT   BINARY_INTEGER;
3 BEGIN
4     DBMS_OUTPUT.put_line ('Init');
5
6     FOR i IN 1 .. 20000
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10        IF (OUT <> 0)
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14     END LOOP;
15
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17* END;
Init
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-rw-r-----   1 oracle   dba       348294 jul 14 18:35 reflex_ora_11706.trc
-rw-r-----   1 oracle   dba       997820 jul 9 16:32 reflex_ora_15766.trc
-rw-r-----   1 oracle   dba       399571 jul 3 15:23 reflex_ora_25955.trc
-rw-r-----   1 oracle   dba      1637069 jun 9 15:34 reflex_ora_19742.trc
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============
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How to set a default start and/or end date for New Events based on trigger date.

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I've tried the CalendarListener and can grab the Trigger Date from it - however, I can't see a way to pass this directly to the popup/dialog I'm using to create the new event.
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BindingContext bindingContext = BindingContext.getCurrent();+
*if ( bindingContext != null ) {*+
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*}*

How to set event trace in 10g

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