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Review of 52North WPS Quickstart: This quickstart provides a good example, but is missing the standard layout expected of a quickstart. See the UDig quickstart as an example.

First sentence should be: 52 North WPS is ...

Then: This quickstart describes how to ...

Add a TOC

Text: "Click on the link to open the 52nWPS-TestClient." Comment: Suggest update image with a red circle in the image, showing where to click. (Eg see gvsig quickstart)

Text: "Make sure that you have started GeoServer"... Comment: Describe how to start GeoServer. (Many new users won't know what GeoServer is, or how to start it).

Comment: Missing step "Select SimpleBuffer_out_wfs.xml"

Add a "Things to try" heading and a "What next" heading.

From /var/log/tomcat9/52n-sos-webapp.log.

2022-06-18 22:35:56,764 ERROR [main] [SqlExceptionHelper.java:146] Connections could not be acquired from the underlying database!
2022-06-18 22:35:56,769 ERROR [main] [UnspecifiedSessionFactoryProvider.java:157] An error occurs during instantiation of the database connection pool!
org.hibernate.exception.GenericJDBCException: Could not open connection
	at org.hibernate.exception.internal.StandardSQLExceptionConverter.convert(StandardSQLExceptionConverter.java:54)
	at org.hibernate.engine.jdbc.spi.SqlExceptionHelper.convert(SqlExceptionHelper.java:126)
	at org.hibernate.engine.jdbc.spi.SqlExceptionHelper.convert(SqlExceptionHelper.java:112)
	at org.hibernate.engine.jdbc.internal.LogicalConnectionImpl.obtainConnection(LogicalConnectionImpl.java:235)
	at org.hibernate.engine.jdbc.internal.LogicalConnectionImpl.getConnection(LogicalConnectionImpl.java:171)
	at org.hibernate.engine.jdbc.internal.JdbcCoordinatorImpl.coordinateWork(JdbcCoordinatorImpl.java:311)
	at org.hibernate.internal.SessionImpl.doWork(SessionImpl.java:2095)
	at org.hibernate.internal.SessionImpl.doWork(SessionImpl.java:2080)
	at org.n52.sos.ds.hibernate.UnspecifiedSessionFactoryProvider.initialize(UnspecifiedSessionFactoryProvider.java:146)
	at org.n52.sos.service.Configurator.initializeConnectionProviders(Configurator.java:625)
	at org.n52.sos.service.Configurator.initialize(Configurator.java:326)
	at org.n52.sos.service.Configurator.createInstance(Configurator.java:150)
	at org.n52.sos.service.SosContextListener.instantiateConfigurator(SosContextListener.java:169)
	at org.n52.sos.service.SosContextListener.instantiateConfigurator(SosContextListener.java:158)
	at org.n52.sos.service.SosContextListener.contextInitialized(SosContextListener.java:69)
	at org.apache.catalina.core.StandardContext.listenerStart(StandardContext.java:4768)
	at org.apache.catalina.core.StandardContext.startInternal(StandardContext.java:5230)
	at org.apache.catalina.util.LifecycleBase.start(LifecycleBase.java:183)
	at org.apache.catalina.core.ContainerBase.addChildInternal(ContainerBase.java:726)
	at org.apache.catalina.core.ContainerBase.addChild(ContainerBase.java:698)
	at org.apache.catalina.core.StandardHost.addChild(StandardHost.java:696)
	at org.apache.catalina.startup.HostConfig.deployWAR(HostConfig.java:1024)
	at org.apache.catalina.startup.HostConfig$DeployWar.run(HostConfig.java:1911)
	at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511)
	at java.util.concurrent.FutureTask.run(FutureTask.java:266)
	at org.apache.tomcat.util.threads.InlineExecutorService.execute(InlineExecutorService.java:75)
	at java.util.concurrent.AbstractExecutorService.submit(AbstractExecutorService.java:112)
	at org.apache.catalina.startup.HostConfig.deployWARs(HostConfig.java:825)
	at org.apache.catalina.startup.HostConfig.deployApps(HostConfig.java:475)
	at org.apache.catalina.startup.HostConfig.start(HostConfig.java:1618)
	at org.apache.catalina.startup.HostConfig.lifecycleEvent(HostConfig.java:319)
	at org.apache.catalina.util.LifecycleBase.fireLifecycleEvent(LifecycleBase.java:123)
	at org.apache.catalina.util.LifecycleBase.setStateInternal(LifecycleBase.java:423)
	at org.apache.catalina.util.LifecycleBase.setState(LifecycleBase.java:366)
	at org.apache.catalina.core.ContainerBase.startInternal(ContainerBase.java:946)
	at org.apache.catalina.core.StandardHost.startInternal(StandardHost.java:835)
	at org.apache.catalina.util.LifecycleBase.start(LifecycleBase.java:183)
	at org.apache.catalina.core.ContainerBase$StartChild.call(ContainerBase.java:1396)
	at org.apache.catalina.core.ContainerBase$StartChild.call(ContainerBase.java:1386)
	at java.util.concurrent.FutureTask.run(FutureTask.java:266)
	at org.apache.tomcat.util.threads.InlineExecutorService.execute(InlineExecutorService.java:75)
	at java.util.concurrent.AbstractExecutorService.submit(AbstractExecutorService.java:134)
	at org.apache.catalina.core.ContainerBase.startInternal(ContainerBase.java:919)
	at org.apache.catalina.core.StandardEngine.startInternal(StandardEngine.java:263)
	at org.apache.catalina.util.LifecycleBase.start(LifecycleBase.java:183)
	at org.apache.catalina.core.StandardService.startInternal(StandardService.java:432)
	at org.apache.catalina.util.LifecycleBase.start(LifecycleBase.java:183)
	at org.apache.catalina.core.StandardServer.startInternal(StandardServer.java:927)
	at org.apache.catalina.util.LifecycleBase.start(LifecycleBase.java:183)
	at org.apache.catalina.startup.Catalina.start(Catalina.java:772)
	at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
	at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)
	at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
	at java.lang.reflect.Method.invoke(Method.java:498)
	at org.apache.catalina.startup.Bootstrap.start(Bootstrap.java:345)
	at org.apache.catalina.startup.Bootstrap.main(Bootstrap.java:480)
Caused by: java.sql.SQLException: Connections could not be acquired from the underlying database!
	at com.mchange.v2.sql.SqlUtils.toSQLException(SqlUtils.java:118)
	at com.mchange.v2.c3p0.impl.C3P0PooledConnectionPool.checkoutPooledConnection(C3P0PooledConnectionPool.java:692)
	at com.mchange.v2.c3p0.impl.AbstractPoolBackedDataSource.getConnection(AbstractPoolBackedDataSource.java:140)
	at org.hibernate.c3p0.internal.C3P0ConnectionProvider.getConnection(C3P0ConnectionProvider.java:90)
	at org.hibernate.internal.AbstractSessionImpl$NonContextualJdbcConnectionAccess.obtainConnection(AbstractSessionImpl.java:380)
	at org.hibernate.engine.jdbc.internal.LogicalConnectionImpl.obtainConnection(LogicalConnectionImpl.java:228)
	... 52 common frames omitted
Caused by: com.mchange.v2.resourcepool.CannotAcquireResourceException: A ResourcePool could not acquire a resource from its primary factory or source.
	at com.mchange.v2.resourcepool.BasicResourcePool.awaitAvailable(BasicResourcePool.java:1469)
	at com.mchange.v2.resourcepool.BasicResourcePool.prelimCheckoutResource(BasicResourcePool.java:644)
	at com.mchange.v2.resourcepool.BasicResourcePool.checkoutResource(BasicResourcePool.java:554)
	at com.mchange.v2.c3p0.impl.C3P0PooledConnectionPool.checkoutAndMarkConnectionInUse(C3P0PooledConnectionPool.java:758)
	at com.mchange.v2.c3p0.impl.C3P0PooledConnectionPool.checkoutPooledConnection(C3P0PooledConnectionPool.java:685)
	... 56 common frames omitted
Caused by: org.postgresql.util.PSQLException: SCRAM authentication is not supported by this driver. You need JDK >= 8 and pgjdbc >= 42.2.0 (not ".jre" vesions)
	at org.postgresql.core.v3.ConnectionFactoryImpl.doAuthentication(ConnectionFactoryImpl.java:623)
	at org.postgresql.core.v3.ConnectionFactoryImpl.openConnectionImpl(ConnectionFactoryImpl.java:205)
	at org.postgresql.core.ConnectionFactory.openConnection(ConnectionFactory.java:49)
	at org.postgresql.jdbc.PgConnection.<init>(PgConnection.java:195)
	at org.postgresql.Driver.makeConnection(Driver.java:452)
	at org.postgresql.Driver.connect(Driver.java:254)
	at com.mchange.v2.c3p0.DriverManagerDataSource.getConnection(DriverManagerDataSource.java:175)
	at com.mchange.v2.c3p0.WrapperConnectionPoolDataSource.getPooledConnection(WrapperConnectionPoolDataSource.java:220)
	at com.mchange.v2.c3p0.WrapperConnectionPoolDataSource.getPooledConnection(WrapperConnectionPoolDataSource.java:206)
	at com.mchange.v2.c3p0.impl.C3P0PooledConnectionPool$1PooledConnectionResourcePoolManager.acquireResource(C3P0PooledConnectionPool.java:203)
	at com.mchange.v2.resourcepool.BasicResourcePool.doAcquire(BasicResourcePool.java:1138)
	at com.mchange.v2.resourcepool.BasicResourcePool.doAcquireAndDecrementPendingAcquiresWithinLockOnSuccess(BasicResourcePool.java:1125)
	at com.mchange.v2.resourcepool.BasicResourcePool.access$700(BasicResourcePool.java:44)
	at com.mchange.v2.resourcepool.BasicResourcePool$ScatteredAcquireTask.run(BasicResourcePool.java:1870)
	at com.mchange.v2.async.ThreadPoolAsynchronousRunner$PoolThread.run(ThreadPoolAsynchronousRunner.java:696)

There are warning before above error.

2022-06-18 22:35:56,761 WARN [C3P0PooledConnectionPoolManager[identityToken->z8kfsxapxsrajw1cs5u4|5733fb1d]-HelperThread-#1] [BasicResourcePool.java:1911] com.mchange.v2.resourcepool.BasicResourcePool$ScatteredAcquireTask@2269c95d -- Acquisition Attempt Failed!!! Clearing pending acquires. While trying to acquire a needed new resource, we failed to succeed more than the maximum number of allowed acquisition attempts (30). Last acquisition attempt exception: 
org.postgresql.util.PSQLException: SCRAM authentication is not supported by this driver. You need JDK >= 8 and pgjdbc >= 42.2.0 (not ".jre" vesions)
	at org.postgresql.core.v3.ConnectionFactoryImpl.doAuthentication(ConnectionFactoryImpl.java:623)
	at org.postgresql.core.v3.ConnectionFactoryImpl.openConnectionImpl(ConnectionFactoryImpl.java:205)
	at org.postgresql.core.ConnectionFactory.openConnection(ConnectionFactory.java:49)
	at org.postgresql.jdbc.PgConnection.<init>(PgConnection.java:195)
	at org.postgresql.Driver.makeConnection(Driver.java:452)
	at org.postgresql.Driver.connect(Driver.java:254)
	at com.mchange.v2.c3p0.DriverManagerDataSource.getConnection(DriverManagerDataSource.java:175)
	at com.mchange.v2.c3p0.WrapperConnectionPoolDataSource.getPooledConnection(WrapperConnectionPoolDataSource.java:220)
	at com.mchange.v2.c3p0.WrapperConnectionPoolDataSource.getPooledConnection(WrapperConnectionPoolDataSource.java:206)
	at com.mchange.v2.c3p0.impl.C3P0PooledConnectionPool$1PooledConnectionResourcePoolManager.acquireResource(C3P0PooledConnectionPool.java:203)
	at com.mchange.v2.resourcepool.BasicResourcePool.doAcquire(BasicResourcePool.java:1138)
	at com.mchange.v2.resourcepool.BasicResourcePool.doAcquireAndDecrementPendingAcquiresWithinLockOnSuccess(BasicResourcePool.java:1125)
	at com.mchange.v2.resourcepool.BasicResourcePool.access$700(BasicResourcePool.java:44)
	at com.mchange.v2.resourcepool.BasicResourcePool$ScatteredAcquireTask.run(BasicResourcePool.java:1870)
	at com.mchange.v2.async.ThreadPoolAsynchronousRunner$PoolThread.run(ThreadPoolAsynchronousRunner.java:696)
2022-06-18 22:35:56,761 WARN [C3P0PooledConnectionPoolManager[identityToken->z8kfsxapxsrajw1cs5u4|5733fb1d]-HelperThread-#1] [BasicResourcePool.java:946] Having failed to acquire a resource, com.mchange.v2.resourcepool.BasicResourcePool@185efb0e is interrupting all Threads waiting on a resource to check out. Will try again in response to new client requests.
2022-06-18 22:35:56,763 WARN [main] [SqlExceptionHelper.java:144] SQL Error: 0, SQLState: null

I have tried to run through Quickstart of N52WPS without success. I waited for 5 minutes but the service does not come up. Not even GetCapabilities.