JDBC 更大容量的更新失败 Collections？

Question

下面的代码片段因地图大小的底层异常而失败 30K+

的订单

如何在不违反游标限制的情况下完成此操作？

orclSQLDevDB=DBConnector.getOracleDevDB();

            for (Map.Entry<String, String> entry : issueMapMSRB2.entrySet()) {

                orclSQLDevDB.setAutoCommit(false);

                PreparedStatement psORACLE = orclSQLDevDB
                        .prepareStatement(NamedQueries.oracle_INSERT);
                psORACLE.setString(1, entry.getKey());
                psORACLE.setString(2, "NMDF");
                if (issueMapMSRB2.get(entry.getKey()).contains("_O_"))
                    psORACLE.setString(3, "ORACLE");
                else
                    psORACLE.setString(3, "MSSQL");
                psORACLE.setString(4, issueMapMSRB2.get(entry.getKey()));



                psORACLE.executeUpdate();  // FAILURE LINE.
                orclSQLDevDB.commit();

            }

异常堆栈跟踪

16 Jan 2015 14:52:26,540 [main] ERROR  RunAnalytics: [Oracle Dev DB]-ORA-01000: maximum open cursors exceeded

java.sql.SQLException: ORA-01000: maximum open cursors exceeded

    at oracle.jdbc.driver.T4CTTIoer.processError(T4CTTIoer.java:440)
    at oracle.jdbc.driver.T4CTTIoer.processError(T4CTTIoer.java:396)
    at oracle.jdbc.driver.T4C8Oall.processError(T4C8Oall.java:837)
    at oracle.jdbc.driver.T4CTTIfun.receive(T4CTTIfun.java:445)
    at oracle.jdbc.driver.T4CTTIfun.doRPC(T4CTTIfun.java:191)
    at oracle.jdbc.driver.T4C8Oall.doOALL(T4C8Oall.java:523)
    at oracle.jdbc.driver.T4CPreparedStatement.doOall8(T4CPreparedStatement.java:207)
    at oracle.jdbc.driver.T4CPreparedStatement.executeForRows(T4CPreparedStatement.java:1010)
    at oracle.jdbc.driver.OracleStatement.doExecuteWithTimeout(OracleStatement.java:1315)
    at oracle.jdbc.driver.OraclePreparedStatement.executeInternal(OraclePreparedStatement.java:3576)
    at oracle.jdbc.driver.OraclePreparedStatement.executeUpdate(OraclePreparedStatement.java:3657)
    at oracle.jdbc.driver.OraclePreparedStatementWrapper.executeUpdate(OraclePreparedStatementWrapper.java:1350)
    at com.citi.Analytics.RunAnalytics.dumpResultToOracle(RunAnalytics.java:218)
    at com.citi.Analytics.RunAnalytics.main(RunAnalytics.java:125)

Answer 1

您不需要在循环中定义 PreparedStatement。将其从循环中取出，然后 setAutoCommit 再试一次。您还需要确保关闭 PreparedStatement。您应该使用 try-catch-finally 并在 finally.

中关闭它

这是来自 Oracle 的一个很好的例子：Using Prepared Statements

Answer 2

您需要在使用完 'Connection' 后关闭它，这就是为什么您会打开许多之前未关闭的游标。

Answer 3

关闭语句并且从不准备内部循环。

JDBC 更大容量的更新失败 Collections？

JDBC Update failing for larger volume Collections?

java

oracle

collections

jdbc