I am getting the following exception as below while trying to execute the extract rule using a .sh file. I have used the same connection parameter in the prconfig.xml which we use for Pega to connect to the DB.

at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
     [java]     at java.lang.reflect.Method.invoke(Method.java:597)
     [java]     at com.pega.pegarules.internal.bootstrap.PRBootstrap.invokeMethod(PRBootstrap.java:338)
     [java]     at com.pega.pegarules.internal.bootstrap.PRBootstrap.invokeMethodPropagatingThrowable(PRBootstrap.java:379)
     [java]     at com.pega.pegarules.boot.internal.extbridge.AppServerBridgeToPega.invokeMethodPropagatingThrowable(AppServerBridgeToPega.java:216)
     [java]     at com.pega.pegarules.boot.internal.extbridge.AppServerBridgeToPega.invokeMethod(AppServerBridgeToPega.java:265)
     [java]     ... 1 more
     [java] Caused by: com.pega.pegarules.pub.PRRuntimeException: Error determining the mode of PRPC install from database.
     [java]     at com.pega.pegarules.data.internal.PRDataProviderImpl.isMultiTenantEnvironment(PRDataProviderImpl.java:1109)
     [java]     at com.pega.pegarules.exec.internal.basic.SystemSettingsImpl.<clinit>(SystemSettingsImpl.java:118)
     [java]     ... 25 more
     [java] Caused by: com.pega.pegarules.pub.database.NonexistentTableException: Database-TableWithNoColumns    DLFE_PRPC715_RULE_DEV.pr4_base    PegaRULES
     [java] From: (unknown) 
     [java]     at com.pega.pegarules.data.internal.access.TableInformationMapImpl.lookupColumnInfo(TableInformationMapImpl.java:663)
     [java]     at com.pega.pegarules.data.internal.access.TableInformationMapImpl.lookupTableInfo(TableInformationMapImpl.java:500)
     [java]     at com.pega.pegarules.data.internal.access.TableInformationMapImpl.get(TableInformationMapImpl.java:384)
     [java]     at com.pega.pegarules.data.internal.access.TableInformationMapImpl.getWithConnection(TableInformationMapImpl.java: