Event Polling Table makins nqs server down

Hi,
I have created a event polling table UET as per the guidelines in the admin tool pdf.
Database version : oracle 11g
obiee version :10.1.3.4
I have create a small test table with two columns and UET table in same schema and same database.
Imported both tables into rpd into new catalog with ddl permision user.
Using tools - > utitlities -> Oracle BI Event tables I added UET as event table. Polling frequency 12min and executed it.
deployed the rpd. restarted the server.
nqs server is getting down.
Could anyone please help me on this .
Thanks in advance,
Sivarama

Hi
PFB the create statement we used.
CREATE TABLE EVENT_POLLING
UPDATE_TYPE INTEGER DEFAULT 1 NOT NULL,
UPDATE_TIME DATE DEFAULT SYSDATE NOT NULL,
DB_NAME VARCHAR2(40 BYTE),
CATALOG_NAME VARCHAR2(40 BYTE),
SCHEMA_NAME VARCHAR2(40 BYTE),
TABLE_NAME VARCHAR2(40 BYTE) NOT NULL,
OTHER VARCHAR2(80 BYTE) DEFAULT NULL
TABLESPACE TS_TEMP_TABLES
Thanks

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We have implemented event polling in our OBIEE 11g application. However, when we are trying to start the BI server, we are getting an error saying ‘[nQSError: 58004] :A fatal error occurred while initializing the cache’. So, when I disable the cache from NQSCONFIG, the server is able to start. Also, when I keep the Cache enabled but disable the event polling table from the Event Polling utility, then also the server start.
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Hi
PFB the create statement we used.
CREATE TABLE EVENT_POLLING
UPDATE_TYPE INTEGER DEFAULT 1 NOT NULL,
UPDATE_TIME DATE DEFAULT SYSDATE NOT NULL,
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CATALOG_NAME VARCHAR2(40 BYTE),
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I have configured Event Polling Table at Oracle BI. It works fine and the entry cache are purged. But some records stays in EPT table for ever. Records without misstat1 are inserted by me (trigger). Records with OTHER=misstat1 are inserted by BI Server. There is no delete or error statement in log file for this timestamp. Other timestamps are deleted by BI Server.
+++Administrator:fffe0000:fffe0012:----2008/09/22 22:17:58
-------------------- Sending query to database named misstat1_db (id: <<127983>>):
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     BI_EPT("UPDATETYPE", "UPDATETIME", "DBNAME", "CATALOGNAME", "SCHEMANAME", "TABLENAME", "OTHER") values (1, TIMESTAMP '2008-09-22 22:08:24', '', '', '', 'MV_E_DENIK_KP', 'misstat1')
UPDATETYPE     UPDATETIME     DBNAME     CATALOGNAME     SCHEMANAME     TABLENAME          OTHER
1     22. 9. 2008 22:08:24                                                                    MV_E_DENIK_KP           misstat1
1     22. 9. 2008 22:08:24                                                                    MV_E_HIM                           misstat1
1     22. 9. 2008 22:28:19                                                                    MV_ODY_OSCI_VYROCI     misstat1
1     22. 9. 2008 22:28:19                                                                    MV_ZPC_CERP           misstat1
1     22. 9. 2008 22:08:24                                                                    MV_E_DENIK_KP
1     22. 9. 2008 22:08:24                                                                    MV_E_HIM
1     22. 9. 2008 22:28:19                                                                    MV_ZPC_CERP
1     22. 9. 2008 22:28:19                                                                    MV_ODY_OSCI_VYROCI

UpdateTime needs to be unique, but you can't put a unique constraint on it. As you probably know, the server will insert a nearly identical record (it will just put text in the OTHER field but everything else will be the same). Then it deletes both records. However, in your case it looks like there are some identical timestamps that are not just duplicates from the server's insert. If you make sure you don't have any identical timestamps in UpdateTime, I think it will work correctly if everything else is configured correctly.

Event Polling Table

1. I created an event polling table S_NQ_EPT in MS SQL SERVER.
3. Imported the table S_NQ_EPT into RPD and designated as EPT.
4. Inserted the record as
INSERT INTO dbo.S_NQ_EPT
VALUES (1,
getdate (),
NULL,
NULL,
NULL,
'TBL_OBIEE_DRIVE_LOB',
NULL);
INSERT INTO dbo.S_NQ_EPT
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6. However it did not truncate the S_NQ_EPT table and instead copied the same row in the S_NQ_EPT table.
Conclusion it deletes the cache but it does not truncate the table. Which results into multiple rows getting replicated after every 15 minutes. Even though the data hasn't changed for the physical tables. ALso, it would unnecessarily delete the cache due to this.
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Edited by: 974664 on May 23, 2013 10:22 AM

Hi Raj,
What you said is correct , Event Polling is one of the method to improve the performance in obiee.
http://gerardnico.com/wiki/dat/obiee/event_table
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Is it mandatory for the bi server to have write access on the event polling table....We dont want bi server to delete the records from the table.
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BI server works in this way, When there are rows in the event table, it knows there is changed data in the underlying databases. The server then invalidates any cache entries corresponding to the changed physical tables and periodically deletes obsolete rows from the event table. If you dont delete these records, it keeps on purging the cache. So it is must to obsolete the rows finished.
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thanks.
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1) http://obiee101.blogspot.com/2008/07/obiee-managing-cache-emptyingpurging.html
2) Repository Project Design ?
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hi all,
i am facing problem with event polling tables
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1.i have created a table in back end for event polling table
2.i have created ODBC connection to import the tables
3. i have imported the tables along with event polling table
4. i made the table as event polling table using utilities
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http://gerardnico.com/wiki/dat/obiee/event_table_
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Hi,
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By,
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I Have configured Event Polling Table in my PC
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Hi,
We have successfully setup OBIEE event polling Table S_NQ_EPT; and OBIEE cache purging mechanism is working fine.
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HI Srini,
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Good morning all,
Where would I check in logs if the BI Polling Table has been updated (and when?). I know its polling interval frequency, however, I just need to troubleshoot something.
Also,
There're several hundred thousands records in the polling table, all are like the following:
Headers
UPDATE_TYPE UPDATE_TIME DB_NAME CATALOG_NAME SCHEMA_NAME TABLE_NAME OTHER
1 11-MAR-09 DATABASE (Blank) SCHEMA_NAME TABLE NAME (different) (Blank)
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Thanks
Edited by: wildmight on Mar 12, 2009 7:13 AM

Hi
Note 4: OBIEE only logs failures in the NQServer.log. Usually found in ..OracleBI\server\Log
see: http://obiee101.blogspot.com/2008/07/obiee-managing-cache-emptyingpurging.html
I would just purge it.
regards
John
http://obiee101.blogspot.com

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2009-12-16 15:40:45
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2009-12-16 15:40:45
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Here's the resolution:
Hdr: 6877602 N/A ADMIN_TOOL 10.1.3.3.2 IMPORT PRODID-2025 PORTID-289
Abstract: INCORRECT SCHEMA WHEN IMPORTING THE EVENT POLLING TABLE
*** JOKENNE 03/10/08 01:47 am ***
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Event Polling Table makins nqs server down

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