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This section contains information that is specific to the database type Sybase IQ.

Supported Functions

The Sybase IQ database can be used with:

• Audit Profile

• Database Collection/Forwarding Agents

• Event Notifications

Preparations

The Sybase JDBC driver that is included in the SDK has to be downloaded to the Platform in order to connect to a Sybase IQ database from Image RemovedUsage Engine. Follow these steps to set up the Sybase JDBC driver on the Platform:

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5. Restart the Desktop.

Close Pooled Connections

  The The APL function closePooledConnections enables you to close a pooled connection with the Sybase IQ server. This feature helps you eliminate invalid connections.

int closePooledConnections
     (string dbProfile)

Parameters

persistent int profileUsageCnt; 
      .... 
      if ( profileUsageCnt > 100 ) { 
         closePooledConnections("sybase_iq.mydb"); 
         profileUsageCnt = 0; 
      }

Performance Tuning

The default maximum number of connections on an Execution Context is five. You can tune this number by setting the Execution Context property sybaseproperty sysbase.iq.pool.maxlimit in the relevant EC.

For Helm deployed ECs, in values.yaml add at:
systemProperties:
  - config.properties.sybase.iq.pool.maxlimit=20

For ECs deployed in Desktop Online, add:
EC Deployment, Execution Context, Configure EC: System Properties: Add -> 
config.properties.sybase.iq.pool.maxlimit=20 

Deploy the EC again either in Desktop Online or with:
$ kubectl delete pod <ec-pod> -n <namespace>

By default there is no timeout value defined for the socket tied to a database connection. This means that a running query could get stuck, in case the database suddenly becomes unreachable. To specify a timeout valueThere are two properties available for handling timeout of socket connections and socket threads:

sybase.jdbc.socketread.timeout with default value 180000 (3 minutes in milliseconds)

sybase.jdbc.socketconnect.timeout  with default value 30000 (30 seconds in milliseconds)

To specify other timeout values, in milliseconds, set the Execution Context property sybase.jdbc.socketread.timeout .properties in the relevant <pico>.conf file.

For Helm deployed ECs, in values.yaml add at:
systemProperties:
  - config.properties.sybase.jdbc.socketread.timeout=600000 
  - config.properties.sybase.jdbc.socketconnect.timeout=20000

For ECs deployed in Desktop Online, add in:
EC Deployment, Execution Context, Configure EC: System Properties: Add ->
config.properties.sybase.jdbc.socketread.timeout=600000 
config.properties.sybase.jdbc.socketconnect.timeout=20000

Deploy the EC again either in Desktop Online or with:
$ kubectl delete pod <ec-pod> -n <namespace

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