blocks|key|2626649|text|您可以尝试捕获此特定错误：|type|unstyled|depth|inlineStyleRanges|entityRanges|data|2626650|public+save(MyData+data)+{

++++try+{
++++++++...
++++}+catch+(SQLRecoverableException+e)+{
++++++++//+Better+handling+a+parameter+to+set
++++++++//+the+maximum+number+of+retries
++++++++//+Eventually+consider+to+retry+on+a+secondary+thread+
++++++++//+delayed+of+a+certain+number+of+seconds
++++++++save(data);
++++}

}|code-block|syntax|javascript|2626651|entityMap^0|0|0^^$0|@$1|2|3|4|5|6|7|I|8|@]|9|@]|A|$]]|$1|B|3|C|5|D|7|J|8|@]|9|@]|A|$E|F]]|$1|G|3|-4|5|6|7|K|8|@]|9|@]|A|$]]]|H|$]]

You can try catch this particular error:

<pre><code>public save(MyData data) {

 try {
 ...
 } catch (SQLRecoverableException e) {
 // Better handling a parameter to set
 // the maximum number of retries
 // Eventually consider to retry on a secondary thread 
 // delayed of a certain number of seconds
 save(data);
 }

}
</code></pre>

blocks|key|2739502|text|@Davide+Lorenzo+MARINO的答案是很好的，除非你有一个足够重的查询，即使在几次恢复之后也不能执行。|type|unstyled|depth|inlineStyleRanges|entityRanges|data|2739503|我不是Oracle的专业人员，但我发现您可以调优某种RAC故障转移，即使在超时之后也能保持事务处理。|2739504|但通常我的愿景是，最好在多个查询中以某种方式拆分数据|2739505|entityMap^0|0|0|0^^$0|@$1|2|3|4|5|6|7|H|8|@]|9|@]|A|$]]|$1|B|3|C|5|6|7|I|8|@]|9|@]|A|$]]|$1|D|3|E|5|6|7|J|8|@]|9|@]|A|$]]|$1|F|3|-4|5|6|7|K|8|@]|9|@]|A|$]]]|G|$]]

The answer of @Davide Lorenzo MARINO is great unless you have a query heavy enough to not to manage to be executed even after such several recovers. 

I'm not a professional in Oracle but what I've found is that you can tune some kind of RAC failover that will keep you transaction even after exceeding the timeout.

But generally my vision is that it is better to split data somehow in multiple queries

blocks|key|2626653|text|最好拆分/存储select查询中的数据，并按一定的时间间隔提交。例如，如果查询的持续时间为2个月，则存储桶/循环/拆分15天的周期，并执行必要的语句并提交|type|unstyled|depth|inlineStyleRanges|entityRanges|data|2626654|entityMap^0|0^^$0|@$1|2|3|4|5|6|7|D|8|@]|9|@]|A|$]]|$1|B|3|-4|5|6|7|E|8|@]|9|@]|A|$]]]|C|$]]

Better split / bucket the data in the select query and commit at some intervals. E.g if the query is for a duration of 2 months, bucket it / loop / split it 15 days of period and do the necessary statements and commit it

blocks|key|2739507|text|在连接到DB并访问这些表时，我得到了以下错误。“执行请求的操作时遇到错误”关闭的连接供应商代码17008。|type|unstyled|depth|inlineStyleRanges|entityRanges|data|2739508|在下载SQL+Developer+19.2.1.247的最新版本后，能够解决此问题。较早的旧版本是3.x。|2739509|entityMap^0|0|0^^$0|@$1|2|3|4|5|6|7|F|8|@]|9|@]|A|$]]|$1|B|3|C|5|6|7|G|8|@]|9|@]|A|$]]|$1|D|3|-4|5|6|7|H|8|@]|9|@]|A|$]]]|E|$]]

I have got the following error upon connection to DB and accessing the tables.
"An error was encountered performing the requested operation"
Closed Connection
Vendor code 17008.

Was able to resolve this after downloading the latest version of SQL Developer 19.2.1.247. Earlier older version was 3.x.

I am trying to execute a query which takes huge amount of time sometimes which causes closed connection, meaning the connection gets closed before the query executes/commits. I want to recover from the error, get a new connection and then retry.

<pre><code>Caused by: java.sql.SQLRecoverableException: Closed Connection
 at oracle.jdbc.driver.OracleStatement.ensureOpen(OracleStatement.java:4051)
 at oracle.jdbc.driver.OracleStatement.executeQuery(OracleStatement.java:1473)
 at oracle.jdbc.driver.OracleStatementWrapper.executeQuery(OracleStatementWrapper.java:406)
 at com.fimt.sat.testora12date.dao.DateSaverGetterDao.testAbandonedConnectionWithDS(DateSaverGetterDao.java:73)
</code></pre>

Closed Connection Error 17008

翻译质量差，导致语言生硬或混乱。

没有提供实际的解决方法或示例。

解答不清晰，无法理解或解决问题。

页面排版不美观，阅读体验差。

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我正在尝试执行一个耗费大量时间的查询，这有时会导致连接关闭，这意味着在查询执行/提交之前连接就会关闭。我想从错误中恢复，获取新的连接，然后重试。Caused by: java.sql.SQLRecoverableException: Closed Connection    at oracle.jdbc.driver....

问关闭连接错误17008
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