Im using the saveAll method by spring-data-jpa.

I know that when i update an entity, hibernate needs to re-attach the detached entity and thats why before the update it executes select statements.

But when i try to update about 10.000 entity it means also 10.000 select will be executed which is a performance issue.

Isnt there any way re-attach that detached entites as bulk?

how to avoid select queries (for every entity separately) before bulk update (Hibernate -spring data jpa)

I am using JPA @Query annotation . Want to insert into two table using simple oracle query in JPA. How can I achieve this .

Don't want to use begin clause . Want single query to insert into two table.

Don't want to used one to many or any relationship due to some restriction.

I believe you might be facing this issue, which is pretty likely especially if both transactions attempt to insert the same SKUs.

If that's the case, I can think of two ways to mitigate it:

Partial solution: try sorting the SKUs in List<CreateSkuRequest> SKUs by SKU.code and (if that's not enough) using saveAndFlush() to store them, ensuring the order of insertion. This should eliminate the circular wait, meaning that now, at least one of the transactions should succeed (the other will probably get a unique constraint violation)

Full solution: if you prefer both transactions to succeed, you would have to acquire a table-level lock for the SKU table. You should be able to do this using a custom update query:

@Query(value = "LOCK TABLE SKU IN EXCLUSIVE MODE", nativeQuery = true)

then, just call the method as the first operation inside createSku. Note that this might turn out to be only marginally more efficient than putting the transactions in a queue, so if I were you, I'd probably still just go with that approach.

How to insert into multiple table using JPA @Query only?

I have written below java code in my JPA repository.

@Query("insert into table (date_colum) value(:dateValue)",nativeQuery= true)
public int insertData(@Param("dateValue") dateValue);


Above code is working perfect when dateValue column is having some value. But when value of dateValue cloumn is null in that case it will giving the below error .

Error : ora-00932 inconsistent datatypes expected date got binary


Any solution please , help is appreciate.

If We add @Temporal to your Date parameter, Spring Data knows how to present that parameter to Hibernate, even if it is null:

@Query("insert into table (date_colum) value(:dateValue)",nativeQuery= true)

public int insertData(@Param("dateValue") @Temporal java.util.Date dateValue);

JPA @query is not working when date value is null during insert

I want to insert and update oracle SYSDATE during insert and update the record in java JPA.

But I want to make SYSDATE at entity level in JPA . How can I achieve this so that after update or insert the record the oracle SYSDATE is reflected.

The reason why the date column gets a null value when inserting, even though it is defined as default SYSDATE dbms-side, is that the default value for a column is only used if the column is not given a value in the query. That means it must not appear in the INSERT INTO sentence, even if it has been given null.

If you want to use the default SYSDATE on the DBMS side, you should configure the @Column with insertable=false in order to get the column out of your SQL INSERTs.

@Column(name = "myDate", insertable=false)

Take into account that this approach will always ignore the value you provide to the property in your app when creating the entity. If you really want to be able to provide the date sometimes, maybe you should consider using a DB trigger to set the value instead of a default value.

There's an alternative to using the default SYSDATE definition of the DBMS. You could use the @PrePersist and @PreUpdate annotations to assign the current date to the property, prior to saving/update, if and only if it has not been assigned yet:

    if (myDate == null) { myDate = new Date(); }

How can I add DB Server SYSDATE at entity level in JPA entity?

Mongodb offers the possibility to avoid over-fetching of data via projection so select only what you wont to have from fields of the document... GraphQL is offering the user the possibility to select only what he wont to have from API fields.

Is there any way based on java (spring) to forward the selected user input (from DataFetchingEnvironment) to mongodb (Query) because the API and document (collection) are almost the same...

spring graphq avoid mongodb data overfetching

When I call the findAll() function in the result I get all the relation so I need to select the same columns. In Laravel they are used with() to resolve problm so What is the equivalent of the Laravel function in spring boot 

You can use projections from Spring Data JPA (doc). In your case, create an interface:

and add the following method to your repository

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