diff --git a/spring-session-jdbc/src/main/resources/org/springframework/session/jdbc/schema-db2.sql b/spring-session-jdbc/src/main/resources/org/springframework/session/jdbc/schema-db2.sql
index 6bc57f9c..dfc2c7c9 100644
--- a/spring-session-jdbc/src/main/resources/org/springframework/session/jdbc/schema-db2.sql
+++ b/spring-session-jdbc/src/main/resources/org/springframework/session/jdbc/schema-db2.sql
@@ -20,5 +20,3 @@ CREATE TABLE SPRING_SESSION_ATTRIBUTES (
 	CONSTRAINT SPRING_SESSION_ATTRIBUTES_PK PRIMARY KEY (SESSION_PRIMARY_ID, ATTRIBUTE_NAME),
 	CONSTRAINT SPRING_SESSION_ATTRIBUTES_FK FOREIGN KEY (SESSION_PRIMARY_ID) REFERENCES SPRING_SESSION(PRIMARY_ID) ON DELETE CASCADE
 );
-
-CREATE INDEX SPRING_SESSION_ATTRIBUTES_IX1 ON SPRING_SESSION_ATTRIBUTES (SESSION_PRIMARY_ID);
diff --git a/spring-session-jdbc/src/main/resources/org/springframework/session/jdbc/schema-derby.sql b/spring-session-jdbc/src/main/resources/org/springframework/session/jdbc/schema-derby.sql
index 6bc57f9c..dfc2c7c9 100644
--- a/spring-session-jdbc/src/main/resources/org/springframework/session/jdbc/schema-derby.sql
+++ b/spring-session-jdbc/src/main/resources/org/springframework/session/jdbc/schema-derby.sql
@@ -20,5 +20,3 @@ CREATE TABLE SPRING_SESSION_ATTRIBUTES (
 	CONSTRAINT SPRING_SESSION_ATTRIBUTES_PK PRIMARY KEY (SESSION_PRIMARY_ID, ATTRIBUTE_NAME),
 	CONSTRAINT SPRING_SESSION_ATTRIBUTES_FK FOREIGN KEY (SESSION_PRIMARY_ID) REFERENCES SPRING_SESSION(PRIMARY_ID) ON DELETE CASCADE
 );
-
-CREATE INDEX SPRING_SESSION_ATTRIBUTES_IX1 ON SPRING_SESSION_ATTRIBUTES (SESSION_PRIMARY_ID);
diff --git a/spring-session-jdbc/src/main/resources/org/springframework/session/jdbc/schema-h2.sql b/spring-session-jdbc/src/main/resources/org/springframework/session/jdbc/schema-h2.sql
index 837c170b..be6e5157 100644
--- a/spring-session-jdbc/src/main/resources/org/springframework/session/jdbc/schema-h2.sql
+++ b/spring-session-jdbc/src/main/resources/org/springframework/session/jdbc/schema-h2.sql
@@ -20,5 +20,3 @@ CREATE TABLE SPRING_SESSION_ATTRIBUTES (
 	CONSTRAINT SPRING_SESSION_ATTRIBUTES_PK PRIMARY KEY (SESSION_PRIMARY_ID, ATTRIBUTE_NAME),
 	CONSTRAINT SPRING_SESSION_ATTRIBUTES_FK FOREIGN KEY (SESSION_PRIMARY_ID) REFERENCES SPRING_SESSION(PRIMARY_ID) ON DELETE CASCADE
 );
-
-CREATE INDEX SPRING_SESSION_ATTRIBUTES_IX1 ON SPRING_SESSION_ATTRIBUTES (SESSION_PRIMARY_ID);
diff --git a/spring-session-jdbc/src/main/resources/org/springframework/session/jdbc/schema-hsqldb.sql b/spring-session-jdbc/src/main/resources/org/springframework/session/jdbc/schema-hsqldb.sql
index 837c170b..be6e5157 100644
--- a/spring-session-jdbc/src/main/resources/org/springframework/session/jdbc/schema-hsqldb.sql
+++ b/spring-session-jdbc/src/main/resources/org/springframework/session/jdbc/schema-hsqldb.sql
@@ -20,5 +20,3 @@ CREATE TABLE SPRING_SESSION_ATTRIBUTES (
 	CONSTRAINT SPRING_SESSION_ATTRIBUTES_PK PRIMARY KEY (SESSION_PRIMARY_ID, ATTRIBUTE_NAME),
 	CONSTRAINT SPRING_SESSION_ATTRIBUTES_FK FOREIGN KEY (SESSION_PRIMARY_ID) REFERENCES SPRING_SESSION(PRIMARY_ID) ON DELETE CASCADE
 );
-
-CREATE INDEX SPRING_SESSION_ATTRIBUTES_IX1 ON SPRING_SESSION_ATTRIBUTES (SESSION_PRIMARY_ID);
diff --git a/spring-session-jdbc/src/main/resources/org/springframework/session/jdbc/schema-mysql.sql b/spring-session-jdbc/src/main/resources/org/springframework/session/jdbc/schema-mysql.sql
index 226fe4bb..ee30e4b3 100644
--- a/spring-session-jdbc/src/main/resources/org/springframework/session/jdbc/schema-mysql.sql
+++ b/spring-session-jdbc/src/main/resources/org/springframework/session/jdbc/schema-mysql.sql
@@ -20,5 +20,3 @@ CREATE TABLE SPRING_SESSION_ATTRIBUTES (
 	CONSTRAINT SPRING_SESSION_ATTRIBUTES_PK PRIMARY KEY (SESSION_PRIMARY_ID, ATTRIBUTE_NAME),
 	CONSTRAINT SPRING_SESSION_ATTRIBUTES_FK FOREIGN KEY (SESSION_PRIMARY_ID) REFERENCES SPRING_SESSION(PRIMARY_ID) ON DELETE CASCADE
 ) ENGINE=InnoDB ROW_FORMAT=DYNAMIC;
-
-CREATE INDEX SPRING_SESSION_ATTRIBUTES_IX1 ON SPRING_SESSION_ATTRIBUTES (SESSION_PRIMARY_ID);
diff --git a/spring-session-jdbc/src/main/resources/org/springframework/session/jdbc/schema-oracle.sql b/spring-session-jdbc/src/main/resources/org/springframework/session/jdbc/schema-oracle.sql
index ed25ee24..2616de4d 100644
--- a/spring-session-jdbc/src/main/resources/org/springframework/session/jdbc/schema-oracle.sql
+++ b/spring-session-jdbc/src/main/resources/org/springframework/session/jdbc/schema-oracle.sql
@@ -20,5 +20,3 @@ CREATE TABLE SPRING_SESSION_ATTRIBUTES (
 	CONSTRAINT SPRING_SESSION_ATTRIBUTES_PK PRIMARY KEY (SESSION_PRIMARY_ID, ATTRIBUTE_NAME),
 	CONSTRAINT SPRING_SESSION_ATTRIBUTES_FK FOREIGN KEY (SESSION_PRIMARY_ID) REFERENCES SPRING_SESSION(PRIMARY_ID) ON DELETE CASCADE
 );
-
-CREATE INDEX SPRING_SESSION_ATTRIBUTES_IX1 ON SPRING_SESSION_ATTRIBUTES (SESSION_PRIMARY_ID);
diff --git a/spring-session-jdbc/src/main/resources/org/springframework/session/jdbc/schema-sqlite.sql b/spring-session-jdbc/src/main/resources/org/springframework/session/jdbc/schema-sqlite.sql
index 28b0756d..d8d60b58 100644
--- a/spring-session-jdbc/src/main/resources/org/springframework/session/jdbc/schema-sqlite.sql
+++ b/spring-session-jdbc/src/main/resources/org/springframework/session/jdbc/schema-sqlite.sql
@@ -20,5 +20,3 @@ CREATE TABLE SPRING_SESSION_ATTRIBUTES (
 	CONSTRAINT SPRING_SESSION_ATTRIBUTES_PK PRIMARY KEY (SESSION_PRIMARY_ID, ATTRIBUTE_NAME),
 	CONSTRAINT SPRING_SESSION_ATTRIBUTES_FK FOREIGN KEY (SESSION_PRIMARY_ID) REFERENCES SPRING_SESSION(PRIMARY_ID) ON DELETE CASCADE
 );
-
-CREATE INDEX SPRING_SESSION_ATTRIBUTES_IX1 ON SPRING_SESSION_ATTRIBUTES (SESSION_PRIMARY_ID);
diff --git a/spring-session-jdbc/src/main/resources/org/springframework/session/jdbc/schema-sqlserver.sql b/spring-session-jdbc/src/main/resources/org/springframework/session/jdbc/schema-sqlserver.sql
index 79cbaaaf..1d77a63f 100644
--- a/spring-session-jdbc/src/main/resources/org/springframework/session/jdbc/schema-sqlserver.sql
+++ b/spring-session-jdbc/src/main/resources/org/springframework/session/jdbc/schema-sqlserver.sql
@@ -20,5 +20,3 @@ CREATE TABLE SPRING_SESSION_ATTRIBUTES (
 	CONSTRAINT SPRING_SESSION_ATTRIBUTES_PK PRIMARY KEY (SESSION_PRIMARY_ID, ATTRIBUTE_NAME),
 	CONSTRAINT SPRING_SESSION_ATTRIBUTES_FK FOREIGN KEY (SESSION_PRIMARY_ID) REFERENCES SPRING_SESSION(PRIMARY_ID) ON DELETE CASCADE
 );
-
-CREATE INDEX SPRING_SESSION_ATTRIBUTES_IX1 ON SPRING_SESSION_ATTRIBUTES (SESSION_PRIMARY_ID);
diff --git a/spring-session-jdbc/src/main/resources/org/springframework/session/jdbc/schema-sybase.sql b/spring-session-jdbc/src/main/resources/org/springframework/session/jdbc/schema-sybase.sql
index 22abfd0a..7e6d6e31 100644
--- a/spring-session-jdbc/src/main/resources/org/springframework/session/jdbc/schema-sybase.sql
+++ b/spring-session-jdbc/src/main/resources/org/springframework/session/jdbc/schema-sybase.sql
@@ -20,5 +20,3 @@ CREATE TABLE SPRING_SESSION_ATTRIBUTES (
 	CONSTRAINT SPRING_SESSION_ATTRIBUTES_PK PRIMARY KEY (SESSION_PRIMARY_ID, ATTRIBUTE_NAME),
 	CONSTRAINT SPRING_SESSION_ATTRIBUTES_FK FOREIGN KEY (SESSION_PRIMARY_ID) REFERENCES SPRING_SESSION(PRIMARY_ID) ON DELETE CASCADE
 ) LOCK DATAROWS;
-
-CREATE INDEX SPRING_SESSION_ATTRIBUTES_IX1 ON SPRING_SESSION_ATTRIBUTES (SESSION_PRIMARY_ID);