diff --git a/liquibase-core/src/main/java/liquibase/snapshot/JdbcDatabaseSnapshot.java b/liquibase-core/src/main/java/liquibase/snapshot/JdbcDatabaseSnapshot.java
index 150f72d5d26..adfea1077fd 100644
--- a/liquibase-core/src/main/java/liquibase/snapshot/JdbcDatabaseSnapshot.java
+++ b/liquibase-core/src/main/java/liquibase/snapshot/JdbcDatabaseSnapshot.java
@@ -1544,6 +1544,11 @@ private String createSql(String catalogName, String schemaName, String tableName
                         if (tableName != null) {
                             sql += " and table_name='" + tableName + "'";
                         }
+                    } else if (database.getClass().getName().contains("MaxDB")) { //have to check classname as this is currently an extension
+                        sql = "select distinct tablename AS TABLE_NAME, constraintname AS CONSTRAINT_NAME from CONSTRAINTCOLUMNS WHERE CONSTRAINTTYPE = 'UNIQUE_CONST'";
+                        if (tableName != null) {
+                            sql += " and tablename='" + tableName + "'";
+                        }
                     } else if (database instanceof MSSQLDatabase) {
                         sql =
                                 "SELECT " +
diff --git a/liquibase-core/src/main/java/liquibase/snapshot/jvm/SequenceSnapshotGenerator.java b/liquibase-core/src/main/java/liquibase/snapshot/jvm/SequenceSnapshotGenerator.java
index 8e63809abb9..ea4a905e2b5 100644
--- a/liquibase-core/src/main/java/liquibase/snapshot/jvm/SequenceSnapshotGenerator.java
+++ b/liquibase-core/src/main/java/liquibase/snapshot/jvm/SequenceSnapshotGenerator.java
@@ -278,9 +278,11 @@ protected String getSelectSequenceSql(Schema schema, Database database) {
                     "FROM SYS.SYSSEQUENCE s " +
                     "JOIN SYS.SYSUSER u ON s.OWNER = u.USER_ID "+
                     "WHERE u.USER_NAME = '" + schema.getName() + "'";
-        	} else {
+        } else if (database.getClass().getName().contains("MaxDB")) { //have to check classname as this is currently an extension
+			return "SELECT SEQUENCE_NAME, MIN_VALUE, MAX_VALUE, INCREMENT_BY, CYCLE_FLAG AS WILL_CYCLE " +
+				   "FROM sequences WHERE SCHEMANAME = '" + schema.getName() + "'";
+		} else {
             throw new UnexpectedLiquibaseException("Don't know how to query for sequences on " + database);
-        }
-
+		}
     }
 }
diff --git a/liquibase-core/src/main/java/liquibase/snapshot/jvm/UniqueConstraintSnapshotGenerator.java b/liquibase-core/src/main/java/liquibase/snapshot/jvm/UniqueConstraintSnapshotGenerator.java
index a9098ee6df9..cf5e197ca06 100644
--- a/liquibase-core/src/main/java/liquibase/snapshot/jvm/UniqueConstraintSnapshotGenerator.java
+++ b/liquibase-core/src/main/java/liquibase/snapshot/jvm/UniqueConstraintSnapshotGenerator.java
@@ -183,7 +183,6 @@ protected List<CachedRow> listConstraints(Table table, DatabaseSnapshot snapshot
                         + "and const.table_name=col.table_name "
                         + "and const.constraint_name=col.constraint_name "
                         + "where const.constraint_catalog='" + database.correctObjectName(schema.getCatalogName(), Catalog.class) + "' ";
-
                 if (database instanceof CockroachDatabase) {
                     sql += " and (select count(*) from (select indexdef from pg_indexes where schemaname='" + database.correctObjectName(schema.getSchema().getName(), Schema.class) + "' AND indexname='" + database.correctObjectName(name, UniqueConstraint.class) + "' AND (position('DESC,' in indexdef) > 0 OR position('DESC)' in indexdef) > 0))) = 0"
                             + "and const.constraint_name != 'primary' ";
@@ -195,6 +194,10 @@ protected List<CachedRow> listConstraints(Table table, DatabaseSnapshot snapshot
                 }
 
                 sql += "order by ordinal_position";
+            } else if (database.getClass().getName().contains("MaxDB")) { //have to check classname as this is currently an extension
+				sql = "select CONSTRAINTNAME as constraint_name, COLUMNNAME as column_name from CONSTRAINTCOLUMNS WHERE CONSTRAINTTYPE = 'UNIQUE_CONST' AND tablename = '"
+						+ database.correctObjectName(example.getRelation().getName(), Table.class) + "' AND constraintname = '"
+						+ database.correctObjectName(name, UniqueConstraint.class) + "'";
             } else if (database instanceof MSSQLDatabase) {
                 sql =
                         "SELECT " +