Create an ability to recover if policy database gets corrupted

MariaDB [policyadmin]> show tables;
+-------------------------------------+
| Tables_in_policyadmin               |
+-------------------------------------+
| jpapdpgroup_properties              |
| jpapdpstatistics_enginestats        |
| jpapdpsubgroup_policies             |
| jpapdpsubgroup_properties           |
| jpapdpsubgroup_supportedpolicytypes |
| jpatoscadatatype_constraints        |
| jpatoscadatatype_metadata           |
| jpatoscadatatype_properties         |
| jpatoscapolicy_metadata             |
| jpatoscapolicy_properties           |
| jpatoscapolicy_targets              |
| jpatoscapolicytype_metadata         |
| jpatoscapolicytype_properties       |
| jpatoscapolicytype_targets          |
| jpatoscapolicytype_triggers         |
| jpatoscaservicetemplate_metadata    |
| pdp                                 |
| pdpgroup                            |
| pdpgroup_pdpsubgroup                |
| pdpstatistics                       |
| pdpsubgroup                         |
| pdpsubgroup_pdp                     |
| toscadatatype                       |
| toscadatatypes                      |
| toscadatatypes_toscadatatype        |
| toscapolicies                       |
| toscapolicies_toscapolicy           |
| toscapolicy                         |
| toscapolicytype                     |
| toscapolicytypes                    |
| toscapolicytypes_toscapolicytype    |
| toscaservicetemplate                |
| toscatopologytemplate               |
+-------------------------------------+
33 rows in set (0.00 sec)


MariaDB [policyadmin]> select * from pdpgroup;
ERROR 1932 (42S02): Table 'policyadmin.pdpgroup' doesn't exist in engine
MariaDB [policyadmin]> select * from pdpsubgroup;
ERROR 1932 (42S02): Table 'policyadmin.pdpsubgroup' doesn't exist in engine

Caused by: org.eclipse.persistence.exceptions.DatabaseException: 
Internal Exception: java.sql.SQLSyntaxErrorException: (conn=23684) Table 'policyadmin.pdpgroup' doesn't exist in engine
Error Code: 1932
Call: SELECT DESCRIPTION, PDPGROUPSTATE, name, version FROM PdpGroup
Query: ReadAllQuery(referenceClass=JpaPdpGroup sql="SELECT DESCRIPTION, PDPGROUPSTATE, name, version FROM PdpGroup")
	at org.eclipse.persistence.exceptions.DatabaseException.sqlException(DatabaseException.java:342)
	at org.eclipse.persistence.internal.databaseaccess.DatabaseAccessor.basicExecuteCall(DatabaseAccessor.java:691)
	at org.eclipse.persistence.internal.databaseaccess.DatabaseAccessor.executeCall(DatabaseAccessor.java:567)
	at org.eclipse.persistence.internal.sessions.AbstractSession.basicExecuteCall(AbstractSession.java:2099)
	at org.eclipse.persistence.sessions.server.ServerSession.executeCall(ServerSession.java:603)
	at org.eclipse.persistence.internal.queries.DatasourceCallQueryMechanism.executeCall(DatasourceCallQueryMechanism.java:275)
	at org.eclipse.persistence.internal.queries.DatasourceCallQueryMechanism.executeCall(DatasourceCallQueryMechanism.java:261)
	at org.eclipse.persistence.internal.queries.DatasourceCallQueryMechanism.executeSelectCall(DatasourceCallQueryMechanism.java:332)
	at org.eclipse.persistence.internal.queries.DatasourceCallQueryMechanism.selectAllRows(DatasourceCallQueryMechanism.java:744)
	at org.eclipse.persistence.internal.queries.ExpressionQueryMechanism.selectAllRowsFromTable(ExpressionQueryMechanism.java:2759)
	at org.eclipse.persistence.internal.queries.ExpressionQueryMechanism.selectAllRows(ExpressionQueryMechanism.java:2712)
	at org.eclipse.persistence.queries.ReadAllQuery.executeObjectLevelReadQuery(ReadAllQuery.java:584)
	at org.eclipse.persistence.queries.ObjectLevelReadQuery.executeDatabaseQuery(ObjectLevelReadQuery.java:1232)
	at org.eclipse.persistence.queries.DatabaseQuery.execute(DatabaseQuery.java:911)
	at org.eclipse.persistence.queries.ObjectLevelReadQuery.execute(ObjectLevelReadQuery.java:1191)
	at org.eclipse.persistence.queries.ReadAllQuery.execute(ReadAllQuery.java:485)
	at org.eclipse.persistence.queries.ObjectLevelReadQuery.executeInUnitOfWork(ObjectLevelReadQuery.java:1279)
	at org.eclipse.persistence.internal.sessions.UnitOfWorkImpl.internalExecuteQuery(UnitOfWorkImpl.java:2983)
	at org.eclipse.persistence.internal.sessions.AbstractSession.executeQuery(AbstractSession.java:1898)
	at org.eclipse.persistence.internal.sessions.AbstractSession.executeQuery(AbstractSession.java:1880)
	at org.eclipse.persistence.internal.sessions.AbstractSession.executeQuery(AbstractSession.java:1845)
	at org.eclipse.persistence.internal.jpa.QueryImpl.executeReadQuery(QueryImpl.java:262)
	... 64 common frames omitted
Caused by: java.sql.SQLSyntaxErrorException: (conn=23684) Table 'policyadmin.pdpgroup' doesn't exist in engine
	at org.mariadb.jdbc.internal.util.exceptions.ExceptionMapper.get(ExceptionMapper.java:177)
	at org.mariadb.jdbc.internal.util.exceptions.ExceptionMapper.getException(ExceptionMapper.java:110)
	at org.mariadb.jdbc.MariaDbStatement.executeExceptionEpilogue(MariaDbStatement.java:228)
	at org.mariadb.jdbc.MariaDbPreparedStatementClient.executeInternal(MariaDbPreparedStatementClient.java:216)
	at org.mariadb.jdbc.MariaDbPreparedStatementClient.execute(MariaDbPreparedStatementClient.java:150)
	at org.mariadb.jdbc.MariaDbPreparedStatementClient.executeQuery(MariaDbPreparedStatementClient.java:164)
	at org.eclipse.persistence.internal.databaseaccess.DatabaseAccessor.executeSelect(DatabaseAccessor.java:1015)
	at org.eclipse.persistence.internal.databaseaccess.DatabaseAccessor.basicExecuteCall(DatabaseAccessor.java:651)
	... 84 common frames omitted
Caused by: java.sql.SQLException: Table 'policyadmin.pdpgroup' doesn't exist in engine
Query is: SELECT DESCRIPTION, PDPGROUPSTATE, name, version FROM PdpGroup
	at org.mariadb.jdbc.internal.util.LogQueryTool.exceptionWithQuery(LogQueryTool.java:153)
	at org.mariadb.jdbc.internal.protocol.AbstractQueryProtocol.executeQuery(AbstractQueryProtocol.java:255)
	at org.mariadb.jdbc.MariaDbPreparedStatementClient.executeInternal(MariaDbPreparedStatementClient.java:209)
	... 88 common frames omitted