java - Connection issue while connecting to HANA DB via JDBC -


i connecting hana db via ngdbc.jar. connection made after running query 3-4 times connection hana db lost. when restart java server again works 3-4 times. can help?check error description here

error msg-

warn  [org.hibernate.util.jdbcexceptionreporter] (http--0.0.0.0-8080-6) sql error: -708, sqlstate: 08006  error [org.hibernate.util.jdbcexceptionreporter] (http--0.0.0.0-8080-6) data receive failed [connection reset].  info  [com.ultimatix.controller.metricscontroller] (http--0.0.0.0-8080-6) context setmonthfreezedateorg.hibernate.exception.jdbcconnectionexception: not execute query  error [org.hibernate.transaction.jdbctransaction] (http--0.0.0.0-8080-6) jdbc rollback failed: com.sap.db.jdbc.exceptions.jdbc40.sqlnontransientconnectionexception: connection database server lost; check server , network status [system error: socket closed]

i can see using hibernate based on log.

can elaborate little bit on stack?

as @rc said, should consider connection pooling instead of opening direct connections if doing in "java" server.

may keeping connection open long , times out.

these guesses, until can share logs or sample code.

one more thing, related ngjdbc driver only, there "reconnect" connection property default set false.

regards


Comments

Post a Comment

Popular posts from this blog

javascript - Clear button on addentry page doesn't work -

this addentry blog page have made scratch , there underlying problems code particularly clear button supposed clear text entered when button clicked on doesn't work have saved html file problem. also 1 other problem submit button works doesn't pass of text index file have written php , reason whenever click on submit button redirects me index page without posting entry have made. <!doctype html> <html> <head> <script> function message() { alert("clear form?"); } </script> <style> body {background-color: beige;} h1 {color: black;} p {color: black;} textarea { width: 50%; height: 150px; padding: 12px 20px; box-sizing: border-box; border: 2px solid #ccc; border-radius: 4px; background-color: white; font-size: 16px; resize: none; } div { padding-left: 20px; } </style> </head> <meta charset="utf-8"> <link rel="stylesheet" href=".
Read more

c# - Selenium Authentication Popup preventing driver close or quit -

i have selenium automated task setup login website retrieve information. it's basic in automation. logging in , clicking 2 links. running issue proving problem. the site in question uses authentication required popup not javascript popup rather regular windows auth popup. have read isn't handled out of box selenium. i using " http://username:password@url.com " site every , site has issues on end prompt me again username/password randomly. have enter username/password twice in row when navigating there hand. since task loops continuously few hours picking needed info figured use webdriverwait verify element present on page. if authentication popup appears, element isn't present. no need care run, start over. the problem having when authentication popup displayed , hit timeout limit want close driver/browser window can start task on again. however, driver.close() , driver.quit() not doing anything. browser remains open , unloaded page still there login p
Read more

tensorflow when input_data MNIST_data , zlib.error: Error -3 while decompressing: invalid block type -

i'm geting started tensorflow,followed tutorials,but cannot download mnist data. import tensorflow tf tensorflow.examples.tutorials.mnist import input_data mnist=input_data.read_data_sets("mnist_data/",one_hot=true) print("download done!") error information: extracting mnist_data/train-images-idx3-ubyte.gz traceback (most recent call last): file "/home/sj/program/tesorflow_try.py", line 6, in <module> mnist=input_data.read_data_sets("mnist_data/",one_hot=true) file "/usr/local/lib/python2.7/dist-packages/tensorflow/contrib/learn/python/learn/datasets/mnist.py", line 213, in read_data_sets train_images = extract_images(f) file "/usr/local/lib/python2.7/dist-packages/tensorflow/contrib/learn/python/learn/datasets/mnist.py", line 60, in extract_images buf = bytestream.read(rows * cols * num_images) file "/usr/lib/python2.7/gzip.py", line 268, in read self._read(readsize) file
Read more