Integration

I am using Coherence 3.3.1 jar files. Caching is working fine for me but at the time of server start, I am getting this error on my console.
So are these errors are serious or only indicating something like unproper installation of files etc.

Error Log -

"[4/2/08 13:08:58:739 CDT] 0000001e SystemErr R 2008-04-02 13:08:58.614 Oracle Coherence 3.3.1/389 <Info> (thread=server.startup : 2, member=n/a): Loaded operational configuration from resource "wsjar:file:/C:/appl/wa/.metadata/.plugins/org.eclipse.wst.server.core/tmp2/UMAEAR.ear/UMAWeb.war/WEB-INF/lib/coherence.jar!/tangosol-coherence.xml"

[4/2/08 13:08:58:739 CDT] 0000001e SystemErr R 2008-04-02 13:08:58.614 Oracle Coherence 3.3.1/389 <Info> (thread=server.startup : 2, member=n/a): Loaded operational overrides from resource "wsjar:file:/C:/appl/wa/.metadata/.plugins/org.eclipse.wst.server.core/tmp2/UMAEAR.ear/UMAWeb.war/WEB-INF/lib/coherence.jar!/tangosol-coherence-override-dev.xml"

[4/2/08 13:08:58:739 CDT] 0000001e SystemErr R 2008-04-02 13:08:58.630 Oracle Coherence 3.3.1/389 <D5> (thread=server.startup : 2, member=n/a): Optional configuration override "/tangosol-coherence-override.xml" is not specified

[4/2/08 13:08:58:739 CDT] 0000001e SystemErr R

Oracle Coherence Version 3.3.1/389

Grid Edition: Development mode

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[4/2/08 13:08:58:739 CDT] 0000001e SystemErr R 2008-04-02 13:08:58.739 Oracle Coherence GE 3.3.1/389 <Info> (thread=server.startup : 2, member=n/a): Loaded cache configuration from resource "wsjar:file:/C:/appl/wa/.metadata/.plugins/org.eclipse.wst.server.core/tmp2/UMAEAR.ear/UMAWeb.war/WEB-INF/lib/coherence.jar!/coherence-cache-config.xml"

[4/2/08 13:08:59:286 CDT] 0000001e SystemErr R 2008-04-02 13:08:59.270 Oracle Coherence GE 3.3.1/389 <D5> (thread=Cluster, member=n/a): Service Cluster joined the cluster with senior service member n/a

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