Each of these "READ" endpoints should "autocommit", which prevents transaction abort issues (atleast with postgres).

If you got an error, (i.e. negative limit is bad), then PG will barf always.
current transaction is aborted, commands ignored until end of transaction block

dspace-rest/src/main/java/org/dspace/rest/BitstreamResource.java

@@ -40,6 +40,8 @@ public class BitstreamResource {
         try {
             if(context == null || !context.isValid()) {
                 context = new Context();
+                //Failed SQL is ignored as a failed SQL statement, prevent: current transaction is aborted, commands ignored until end of transaction block
+                context.getDBConnection().setAutoCommit(true);
             }
 
             org.dspace.content.Bitstream bitstream = org.dspace.content.Bitstream.find(context, bitstream_id);
@@ -62,6 +64,8 @@ public class BitstreamResource {
         try {
             if(context == null || !context.isValid() ) {
                 context = new org.dspace.core.Context();
+                //Failed SQL is ignored as a failed SQL statement, prevent: current transaction is aborted, commands ignored until end of transaction block
+                context.getDBConnection().setAutoCommit(true);
             }
 
             org.dspace.content.Bitstream bitstream = org.dspace.content.Bitstream.find(context, bitstream_id);

dspace-rest/src/main/java/org/dspace/rest/CollectionsResource.java

@@ -67,6 +67,8 @@ public class CollectionsResource {
         try {
             if(context == null || !context.isValid() ) {
                 context = new org.dspace.core.Context();
+                //Failed SQL is ignored as a failed SQL statement, prevent: current transaction is aborted, commands ignored until end of transaction block
+                context.getDBConnection().setAutoCommit(true);
             }
 
             org.dspace.content.Collection[] collections = org.dspace.content.Collection.findAll(context);
@@ -81,7 +83,7 @@ public class CollectionsResource {
             return collectionArrayList.toArray(new org.dspace.rest.common.Collection[0]);
 
         } catch (SQLException e) {
-            e.getMessage();
+            log.error(e.getMessage());
             throw new WebApplicationException(Response.Status.INTERNAL_SERVER_ERROR);
         }
     }
@@ -93,6 +95,8 @@ public class CollectionsResource {
         try {
             if(context == null || !context.isValid() ) {
                 context = new Context();
+                //Failed SQL is ignored as a failed SQL statement, prevent: current transaction is aborted, commands ignored until end of transaction block
+                context.getDBConnection().setAutoCommit(true);
             }
 
             org.dspace.content.Collection collection = org.dspace.content.Collection.find(context, collection_id);

dspace-rest/src/main/java/org/dspace/rest/CommunitiesResource.java

@@ -64,6 +64,8 @@ public class CommunitiesResource {
         try {
             if(context == null || !context.isValid() ) {
                 context = new org.dspace.core.Context();
+                //Failed SQL is ignored as a failed SQL statement, prevent: current transaction is aborted, commands ignored until end of transaction block
+                context.getDBConnection().setAutoCommit(true);
             }
 
             org.dspace.content.Community[] topCommunities = org.dspace.content.Community.findAllTop(context);
@@ -91,6 +93,8 @@ public class CommunitiesResource {
         try {
             if(context == null || !context.isValid() ) {
                 context = new org.dspace.core.Context();
+                //Failed SQL is ignored as a failed SQL statement, prevent: current transaction is aborted, commands ignored until end of transaction block
+                context.getDBConnection().setAutoCommit(true);
             }
 
             org.dspace.content.Community community = org.dspace.content.Community.find(context, community_id);

dspace-rest/src/main/java/org/dspace/rest/HandleResource.java

@@ -40,6 +40,8 @@ public class HandleResource {
         try {
             if(context == null || !context.isValid() ) {
                 context = new Context();
+                //Failed SQL is ignored as a failed SQL statement, prevent: current transaction is aborted, commands ignored until end of transaction block
+                context.getDBConnection().setAutoCommit(true);
             }
 
             org.dspace.content.DSpaceObject dso = HandleManager.resolveToObject(context, prefix + "/" + suffix);

dspace-rest/src/main/java/org/dspace/rest/ItemsResource.java

@@ -37,6 +37,8 @@ public class ItemsResource {
         try {
             if(context == null || !context.isValid()) {
                 context = new Context();
+                //Failed SQL is ignored as a failed SQL statement, prevent: current transaction is aborted, commands ignored until end of transaction block
+                context.getDBConnection().setAutoCommit(true);
             }
 
             org.dspace.content.Item item = org.dspace.content.Item.find(context, item_id);