diff --git a/plugin/trino-accumulo/src/main/java/io/trino/plugin/accumulo/AccumuloClient.java b/plugin/trino-accumulo/src/main/java/io/trino/plugin/accumulo/AccumuloClient.java
index 0b34a842b832..5c47ee0e86ef 100644
--- a/plugin/trino-accumulo/src/main/java/io/trino/plugin/accumulo/AccumuloClient.java
+++ b/plugin/trino-accumulo/src/main/java/io/trino/plugin/accumulo/AccumuloClient.java
@@ -115,7 +115,14 @@ public AccumuloClient(
 
         // The default namespace is created in ZooKeeperMetadataManager's constructor
         if (!tableManager.namespaceExists(DEFAULT_SCHEMA)) {
-            tableManager.createNamespace(DEFAULT_SCHEMA);
+            try {
+                tableManager.createNamespace(DEFAULT_SCHEMA);
+            }
+            catch (TrinoException e) {
+                if (!e.getErrorCode().equals(ALREADY_EXISTS.toErrorCode())) {
+                    throw e;
+                }
+            }
         }
     }
 
diff --git a/plugin/trino-accumulo/src/main/java/io/trino/plugin/accumulo/AccumuloTableManager.java b/plugin/trino-accumulo/src/main/java/io/trino/plugin/accumulo/AccumuloTableManager.java
index 7b5462cd3169..448e67f6275e 100644
--- a/plugin/trino-accumulo/src/main/java/io/trino/plugin/accumulo/AccumuloTableManager.java
+++ b/plugin/trino-accumulo/src/main/java/io/trino/plugin/accumulo/AccumuloTableManager.java
@@ -36,6 +36,7 @@
 import static io.trino.plugin.accumulo.AccumuloErrorCode.ACCUMULO_TABLE_DNE;
 import static io.trino.plugin.accumulo.AccumuloErrorCode.ACCUMULO_TABLE_EXISTS;
 import static io.trino.plugin.accumulo.AccumuloErrorCode.UNEXPECTED_ACCUMULO_ERROR;
+import static io.trino.spi.StandardErrorCode.ALREADY_EXISTS;
 import static java.util.Objects.requireNonNull;
 
 /**
@@ -58,7 +59,10 @@ public void createNamespace(String schema)
         try {
             connector.namespaceOperations().create(schema);
         }
-        catch (AccumuloException | AccumuloSecurityException | NamespaceExistsException e) {
+        catch (NamespaceExistsException e) {
+            throw new TrinoException(ALREADY_EXISTS, "Namespace already exists: " + schema, e);
+        }
+        catch (AccumuloException | AccumuloSecurityException e) {
             throw new TrinoException(UNEXPECTED_ACCUMULO_ERROR, "Failed to create Accumulo namespace: " + schema, e);
         }
     }