OSIV:false , cannot get session for resolving FetchType.Lazy items, even in the scope of #Transactional - spring

Question

In my spring application, I have disabled osiv (spring.jpa.open-in-view=false) to avoid holding hibernate sessions throughout a request lifecycle.
After disabling OSIV, I am getting the following error when I try to access a field in my entity that has the FetchType set as LAZY
org.hibernate.LazyInitializationException: could not initialize proxy [sg.identity.auth.entity.OrganizationEntity#2] - no Session
This is the entity I'm using and I'm trying to access userEntity.getOrganization() which results in the LazyInitializationException.
#AllArgsConstructor
#NoArgsConstructor
#Getter
#Setter
#Entity
#Table(name = "\"USER\"")
public class UserEntity extends AbstractAuditingEntity implements Serializable {
#Id
#GeneratedValue(strategy = GenerationType.IDENTITY)
#Column(name = "user_id")
private Long userId;
#OneToOne(fetch = FetchType.LAZY)
#JoinTable(name = "organization_user",
joinColumns = #JoinColumn(name = "user_id", referencedColumnName = "user_id"),
inverseJoinColumns = #JoinColumn(name = "organization_id", referencedColumnName = "organization_id"))
private OrganizationEntity organization;
#ManyToMany(cascade = CascadeType.MERGE)
#org.hibernate.annotations.Cache(usage = CacheConcurrencyStrategy.NONSTRICT_READ_WRITE)
#JoinTable(name = "user_parent_organization_unit_mapping",
joinColumns = #JoinColumn(name = "user_id", referencedColumnName = "user_id"),
inverseJoinColumns = #JoinColumn(name = "organization_unit_id", referencedColumnName = "organization_unit_id"))
private Set<OrganizationUnitEntity> organizationUnits;
#OneToOne(cascade = CascadeType.ALL)
#org.hibernate.annotations.Cache(usage = CacheConcurrencyStrategy.NONSTRICT_READ_WRITE)
#JoinTable(name = "user_exclusion_mapping",
joinColumns = #JoinColumn(name = "user_id", referencedColumnName = "user_id"),
inverseJoinColumns = #JoinColumn(name = "excluding_permission_set_id", referencedColumnName = "permission_set_id"))
private PermissionSetEntity exclusionPermissions;
#ManyToMany(cascade = CascadeType.MERGE)
#org.hibernate.annotations.Cache(usage = CacheConcurrencyStrategy.NONSTRICT_READ_WRITE)
#JoinTable(name = "user_role",
joinColumns = #JoinColumn(name = "user_id", referencedColumnName = "user_id"),
inverseJoinColumns = #JoinColumn(name = "role_id", referencedColumnName = "role_id"))
private Set<RoleEntity> roles;
}
I'm calling the user.getOrganizationEntity in a method annotated with #Transactional so It should receive an open session to resolve the lazy items. But in my case, it is not working
#Transactional
public Organization getOrganization(String emailId) {
return userRepository.getUserByEmailId(emailId)
.map(UserEntity::getOrganization)
.map(OrganizationMapper::toDto)
.orElseThrow(() -> new IllegalArgumentException("error"));
}
The user.getOrganization is resolving correctly when I try using TransactionTemplate.
#Transactional
public Organization getOrganization(String emailId) {
return transactionTemplate.execute(status -> {
return userRepository.getUserByEmailId(emailId)
.map(UserEntity::getOrganization)
.map(OrganizationMapper::toDto)
.orElseThrow(() -> new IllegalArgumentException("error"));
});
}
I got it working with #Transactional itself by setting the property spring.jpa.properties.hibernate.enable_lazy_load_no_trans=true, but from my research, i found that it is not recommended to set this flag as true