| JSON_TABLE concurrent access issue [message #659034] |
Wed, 04 January 2017 13:50  |
 |
VeeS
Messages: 1
Registered: January 2017
|
Junior Member |
|
|
Hi,
We are using CLOB with JSON constraint in a table which is retrieved into a JSON_TABLE in a stored procedure.
Query construct is:
Select jt.col1, jt.col2 from JSON_TABLE(...) as jt where jt.col3 = (some value);
The procedure takes a key and does some processing around it.
There is a list of keys which if traversed in sequentially causes no issues. So this procedure executed in single thread from Java based application works fine. If we spawn multiple threads to execute the procedure with different input keys then after a while it get the following exception in application log:
java.sql.sqlexception No more data to read from socket
Following messages are retrieved in database stacktrace:
ORA-01423: error encountered while checking for extra rows in exact fetch
ORA-19114: XPST0003 - error during parsing the XQuery expression
ORA-19202: Error occurred in XML processing
Comment out this select clause and hardcode the value retrieved from JSON_TABLE then this procedure works fine.
We have also replaced the logic to use JSON_VALUE instead and that also works concurrently.
Is there any known issue in use of JSON_TABLE in concurrent access? Are we missing any best practice in JSON_TABLE's use?
Thanks
|
|
|
|
|
|
] 
Blog
Search
Help
Members
Register
Login
Home
