Connect to database

sapna.handyal

Hi,

I was using a Persistent Store to Record and Playback Events. The documentation for the same includes the steps to configure an Event Store for Oracle CEP Server, for the default (Apache Derby) database.

I need the steps to configure an Event store for Oracle database.

Thanks

Junger He-Oracle

Hi,

You can refer to the server's configuration XSD for help on how to configure a data source. Below is a sample for your convenience:

-server config.xml
<data-source>
<name>eventrepository-test-ds-oracle</name>
<data-source-params>
<global-transactions-protocol>
None
</global-transactions-protocol>
</data-source-params>
<connection-pool-params>
<initial-capacity>5</initial-capacity>
<max-capacity>10</max-capacity>
</connection-pool-params>
<driver-params>
<url>jdbc:oracle:thin:@hostname:1521:xe</url>
<driver-name>oracle.jdbc.OracleDriver</driver-name>
<properties>
<element>
<name>user</name>
<value>sccot</value>
</element>
<element>
<name>password</name>
<value>tiger</value>
</element>
</properties>
</driver-params>
</data-source>

sapna.handyal

Hi Junger,

Thanks for the sample. Once I do this, I need to specify the RDBMS Event Store Provider by adding an <rdbms-event-store-provider> element to the server's config file. In that case, my code will be (according to the documentation):

<rdbms-event-store-provider>
<name>my-rdbms-provider</name>
<data-source-name>eventrepository-test-ds-oracle</data-source-name>
</rdbms-event-store-provider>

According to my understanding, the "my-rdbms-provider" event store is the default event store that comes along with the Berkeley DB. Correct me if I'm wrong.

Where and how do I define my event store for the Oracle database?

Thanks

Junger He-Oracle

Hi,

Event store is designed for record/playback, you can configure as the following to use the event store:

<jms-adapter>
<name>inadapter</name>

<record-parameters>
<dataset-name>wlevsqa</dataset-name><!--Note that wlevsqa is a schema name(user) in the DB -->
<event-type-list>
<event-type>TradeEvent</event-type>
</event-type-list>
<provider-name>test-rdbms-provider</provider-name>
<batch-size>1</batch-size>
<batch-time-out>10</batch-time-out>
</record-parameters>
</jms-adapter>

sapna.handyal

Hi Junger,

I am able to store events (of a single event type - totalEventType) in the database. Thanks for the guidance.

But the events are being stored in a table called "tuplevalue", even though

<dataset-name>system</dataset-name> and <provider-name>provider</provider-name>. How do I change the table name? Also, Is there a way where I can specify the table in which the events should be stored?


Along with this, I tried storing multiple event types:

<record-parameters>
<dataset-name>system</dataset-name>
<event-type-list>
<event-type>totalEventType</event-type>
<event-type>BAMMessageEvent</event-type>
</event-type-list>
<provider-name>provider</provider-name>
<time-range>
<start>2012-01-29T05:00:00</start>
<end>2020-01-20T12:00:00</end>
</time-range>
<batch-size>100</batch-size>
<batch-time-out>10</batch-time-out>
</record-parameters>

In this case, events are being recorded, i.e. the EVENT_STORE_SUPPORTED_TYPE table, has the records - totalEventType & BAMMessageEvent.
But data is getting recorded in the same "tuplevalue" table. (columns with values of totalEventType are "null" and new columns with values of BAMMessageEvent have been added & populated, to the "tuplevalue" table)

When I do not specify any event type, there is an error for no event type specified.

How do I deal with this?