我正在使用 JDBC 连接到 DB2 并执行 SQL 语句。 运行一个简单的：
SELECT * FROM myview
我得到一个：
状态 ： 24501
消息： [SQL0501] 光标CRSR0001未打开。原因 . . . . . ：游标CRSR0001是在 FETCH 或 CLOSE 语句中指定的，但游标未打开。游标CRSR0001具有下列条件之一： -- 游标CRSR0001从未打开。-- 游标CRSR0001在另一个程序或该程序的另一个调用中打开，并且该程序是使用 CLOSQLCSR（*ENDPGM） 创建的。-- 游标CRSR0001在另一个模块或该模块的另一个调用中打开，并且该模块是使用 CLOSQLCSR（*ENDMOD） 创建的。-- 游标CRSR0001在此程序的另一个调用中打开，运行 SQL 语句的程序已经结束，并且程序是使用 CLOSQLCSR（*ENDSQL） 创建的。-- 光标CRSR0001在此模块的另一个调用中打开，激活组在调用之间结束。该模块是使用 CLOSQLCSR（*ENDACTGRP） 创建的。-- 游标被 CLOSE、COMMIT 或 ROLLBACK 语句关闭。-- 游标CRSR0001在与当前事务不同的事务下打开。恢复 . . . ： 执行以下操作之一并再次预编译： -- 在 FETCH 或 CLOSE 语句中使用游标之前，请确保在同一程序或模块调用中打开游标CRSR0001。-- 在预编译应用程序时指定 CLOSQLCSR（*ENDSQL）、CLOSQLCSR（*ENDJOB） 或 CLOSQLCSR（*ENDACTGRP）。-- 如果游标被 COMMIT 或 ROLLBACK 关闭，请在 COMMIT 或 ROLLBACK 语句上指定 HOLD 以保留表上任何打开的游标、预准备语句和锁。
错误 ： -501
这发生在我调用时从结果集中获取最后一行之后
rs.next()
如果我在 select 语句中添加一个 where 子句，它可能会也可能不会处理相同的错误（取决于我过滤的内容）。 不过，似乎与任何特定行无关。
我已经能够通过以下方式规避这个问题：* 将连接字符串中的"块大小"参数更改为 2 的任意幂，但 32（默认值）除外
或者通过更改语句的初始创建方式：
// Get a statement from the connection
stmt = conn.createStatement(); // doesn't work
stmt = conn.createStatement(ResultSet.TYPE_FORWARD_ONLY, ResultSet.CONCUR_READ_ONLY); // doesn't work
stmt = conn.createStatement(ResultSet.TYPE_FORWARD_ONLY, ResultSet.CONCUR_UPDATABLE); // works
stmt = conn.createStatement(ResultSet.TYPE_SCROLL_SENSITIVE, ResultSet.CONCUR_UPDATABLE, ResultSet.CLOSE_CURSORS_AT_COMMIT); // works
stmt = conn.createStatement(ResultSet.TYPE_SCROLL_SENSITIVE, ResultSet.CONCUR_UPDATABLE, ResultSet.HOLD_CURSORS_OVER_COMMIT); // works
stmt = conn.createStatement(ResultSet.TYPE_SCROLL_SENSITIVE, ResultSet.CONCUR_READ_ONLY); // works
stmt = conn.createStatement(ResultSet.TYPE_SCROLL_INSENSITIVE, ResultSet.CONCUR_READ_ONLY); // works
stmt = conn.createStatement(ResultSet.TYPE_SCROLL_INSENSITIVE, ResultSet.CONCUR_UPDATABLE); // works
stmt = conn.createStatement(ResultSet.TYPE_FORWARD_ONLY, ResultSet.CONCUR_READ_ONLY, ResultSet.CLOSE_CURSORS_AT_COMMIT); // doesn't work
stmt = conn.createStatement(ResultSet.TYPE_FORWARD_ONLY, ResultSet.CONCUR_READ_ONLY, ResultSet.HOLD_CURSORS_OVER_COMMIT); // doesn't work
我已经测试了JT Open的各种JDBC版本（6.4,6.6,7.4）。所有这些都显示相同的问题，因此可能不是驱动程序问题。
此外，可能最奇怪的部分是，如果我使用相同的底层SQL创建另一个视图（不同的名称），那么它每次都可以正常工作。 删除旧视图并重新创建它并不能解决问题。
最后，AS400机器最近进行了修补（大约在我们开始注意到问题的时候）。 这段代码以前已经工作了很长时间。
有什么想法吗？
附言。代码：
Driver d = new com.ibm.as400.access.AS400JDBCDriver();
DriverManager.registerDriver(d);
conn = DriverManager.getConnection("jdbc:as400://1.1.1.1/MYLIB;prompt=false;keep alive=true;errors=full", "user", "pass");
stmt = conn.createStatement();
rs = stmt.executeQuery(sql);
while (rs.next()) {
System.out.println(rs.getString(1));
}
PS：迹线的输出：
Toolbox for Java - Open Source Software, JTOpen 7.4, codebase 5770-SS1 V7R1M0.05 2011/04/25 @CA
java.home=C:Program FilesJavajdk1.6.0_27jre java.vm.version=20.2-b06 java.version=1.6.0_27 os.name=Windows 7 os.version=6.1
Thread[main,5,main] on maj 2 14:48:05:287 CEST 2012 as400: Properties (1026683572) : access = "all".
Thread[main,5,main] on maj 2 14:48:05:303 CEST 2012 as400: Properties (1026683572) : block size = "32".
Thread[main,5,main] on maj 2 14:48:05:303 CEST 2012 as400: Properties (1026683572) : block criteria = "2".
Thread[main,5,main] on maj 2 14:48:05:303 CEST 2012 as400: Properties (1026683572) : date format = "".
Thread[main,5,main] on maj 2 14:48:05:303 CEST 2012 as400: Properties (1026683572) : date separator = "".
Thread[main,5,main] on maj 2 14:48:05:303 CEST 2012 as400: Properties (1026683572) : decimal separator = "".
Thread[main,5,main] on maj 2 14:48:05:303 CEST 2012 as400: Properties (1026683572) : errors = "full".
Thread[main,5,main] on maj 2 14:48:05:303 CEST 2012 as400: Properties (1026683572) : extended dynamic = "false".
Thread[main,5,main] on maj 2 14:48:05:303 CEST 2012 as400: Properties (1026683572) : libraries = "".
Thread[main,5,main] on maj 2 14:48:05:303 CEST 2012 as400: Properties (1026683572) : naming = "sql".
Thread[main,5,main] on maj 2 14:48:05:303 CEST 2012 as400: Properties (1026683572) : package = "".
Thread[main,5,main] on maj 2 14:48:05:303 CEST 2012 as400: Properties (1026683572) : package add = "true".
Thread[main,5,main] on maj 2 14:48:05:303 CEST 2012 as400: Properties (1026683572) : package cache = "false".
Thread[main,5,main] on maj 2 14:48:05:303 CEST 2012 as400: Properties (1026683572) : package clear = "false".
Thread[main,5,main] on maj 2 14:48:05:303 CEST 2012 as400: Properties (1026683572) : package error = "warning".
Thread[main,5,main] on maj 2 14:48:05:303 CEST 2012 as400: Properties (1026683572) : package library = "".
Thread[main,5,main] on maj 2 14:48:05:303 CEST 2012 as400: Properties (1026683572) : password = "".
Thread[main,5,main] on maj 2 14:48:05:303 CEST 2012 as400: Properties (1026683572) : prefetch = "true".
Thread[main,5,main] on maj 2 14:48:05:303 CEST 2012 as400: Properties (1026683572) : prompt = "false".
Thread[main,5,main] on maj 2 14:48:05:303 CEST 2012 as400: Properties (1026683572) : remarks = "system".
Thread[main,5,main] on maj 2 14:48:05:303 CEST 2012 as400: Properties (1026683572) : sort = "hex".
Thread[main,5,main] on maj 2 14:48:05:303 CEST 2012 as400: Properties (1026683572) : sort language = "ENU".
Thread[main,5,main] on maj 2 14:48:05:303 CEST 2012 as400: Properties (1026683572) : sort table = "".
Thread[main,5,main] on maj 2 14:48:05:303 CEST 2012 as400: Properties (1026683572) : sort weight = "shared".
Thread[main,5,main] on maj 2 14:48:05:303 CEST 2012 as400: Properties (1026683572) : time format = "".
Thread[main,5,main] on maj 2 14:48:05:303 CEST 2012 as400: Properties (1026683572) : time separator = "".
Thread[main,5,main] on maj 2 14:48:05:303 CEST 2012 as400: Properties (1026683572) : trace = "true".
Thread[main,5,main] on maj 2 14:48:05:303 CEST 2012 as400: Properties (1026683572) : transaction isolation = "read uncommitted".
Thread[main,5,main] on maj 2 14:48:05:303 CEST 2012 as400: Properties (1026683572) : translate binary = "false".
Thread[main,5,main] on maj 2 14:48:05:303 CEST 2012 as400: Properties (1026683572) : user = "myuser".
Thread[main,5,main] on maj 2 14:48:05:303 CEST 2012 as400: Properties (1026683572) : package criteria = "default".
Thread[main,5,main] on maj 2 14:48:05:303 CEST 2012 as400: Properties (1026683572) : lob threshold = "32768".
Thread[main,5,main] on maj 2 14:48:05:303 CEST 2012 as400: Properties (1026683572) : secure = "false".
Thread[main,5,main] on maj 2 14:48:05:303 CEST 2012 as400: Properties (1026683572) : data truncation = "true".
Thread[main,5,main] on maj 2 14:48:05:303 CEST 2012 as400: Properties (1026683572) : proxy server = "".
Thread[main,5,main] on maj 2 14:48:05:303 CEST 2012 as400: Properties (1026683572) : secondary URL = "".
Thread[main,5,main] on maj 2 14:48:05:303 CEST 2012 as400: Properties (1026683572) : data compression = "true".
Thread[main,5,main] on maj 2 14:48:05:303 CEST 2012 as400: Properties (1026683572) : big decimal = "true".
Thread[main,5,main] on maj 2 14:48:05:303 CEST 2012 as400: Properties (1026683572) : thread used = "true".
Thread[main,5,main] on maj 2 14:48:05:303 CEST 2012 as400: Properties (1026683572) : cursor hold = "true".
Thread[main,5,main] on maj 2 14:48:05:303 CEST 2012 as400: Properties (1026683572) : lazy close = "false".
Thread[main,5,main] on maj 2 14:48:05:303 CEST 2012 as400: Properties (1026683572) : driver = "toolbox".
Thread[main,5,main] on maj 2 14:48:05:303 CEST 2012 as400: Properties (1026683572) : bidi string type = "5".
Thread[main,5,main] on maj 2 14:48:05:303 CEST 2012 as400: Properties (1026683572) : key ring name = "".
Thread[main,5,main] on maj 2 14:48:05:303 CEST 2012 as400: Properties (1026683572) : key ring password = "".
Thread[main,5,main] on maj 2 14:48:05:303 CEST 2012 as400: Properties (1026683572) : full open = "false".
Thread[main,5,main] on maj 2 14:48:05:303 CEST 2012 as400: Properties (1026683572) : server trace = "2".
Thread[main,5,main] on maj 2 14:48:05:303 CEST 2012 as400: Properties (1026683572) : database name = "".
Thread[main,5,main] on maj 2 14:48:05:303 CEST 2012 as400: Properties (1026683572) : extended metadata = "false".
Thread[main,5,main] on maj 2 14:48:05:303 CEST 2012 as400: Properties (1026683572) : cursor sensitivity = "asensitive".
Thread[main,5,main] on maj 2 14:48:05:303 CEST 2012 as400: Properties (1026683572) : behavior override = "0".
Thread[main,5,main] on maj 2 14:48:05:303 CEST 2012 as400: Properties (1026683572) : package ccsid = "13488".
Thread[main,5,main] on maj 2 14:48:05:303 CEST 2012 as400: Properties (1026683572) : minimum divide scale = "0".
Thread[main,5,main] on maj 2 14:48:05:303 CEST 2012 as400: Properties (1026683572) : maximum precision = "31".
Thread[main,5,main] on maj 2 14:48:05:303 CEST 2012 as400: Properties (1026683572) : maximum scale = "31".
Thread[main,5,main] on maj 2 14:48:05:303 CEST 2012 as400: Properties (1026683572) : translate hex = "character".
Thread[main,5,main] on maj 2 14:48:05:303 CEST 2012 as400: Properties (1026683572) : toolbox trace = "all".
Thread[main,5,main] on maj 2 14:48:05:303 CEST 2012 as400: Properties (1026683572) : qaqqinilib = "".
Thread[main,5,main] on maj 2 14:48:05:303 CEST 2012 as400: Properties (1026683572) : login timeout = "".
Thread[main,5,main] on maj 2 14:48:05:303 CEST 2012 as400: Properties (1026683572) : true autocommit = "false".
Thread[main,5,main] on maj 2 14:48:05:303 CEST 2012 as400: Properties (1026683572) : bidi implicit reordering = "true".
Thread[main,5,main] on maj 2 14:48:05:303 CEST 2012 as400: Properties (1026683572) : bidi numeric ordering = "false".
Thread[main,5,main] on maj 2 14:48:05:303 CEST 2012 as400: Properties (1026683572) : hold input locators = "true".
Thread[main,5,main] on maj 2 14:48:05:303 CEST 2012 as400: Properties (1026683572) : hold statements = "false".
Thread[main,5,main] on maj 2 14:48:05:303 CEST 2012 as400: Properties (1026683572) : rollback cursor hold = "false".
Thread[main,5,main] on maj 2 14:48:05:303 CEST 2012 as400: Properties (1026683572) : variable field compression = "true".
Thread[main,5,main] on maj 2 14:48:05:303 CEST 2012 as400: Properties (1026683572) : query optimize goal = "0".
Thread[main,5,main] on maj 2 14:48:05:303 CEST 2012 as400: Properties (1026683572) : keep alive = "true".
Thread[main,5,main] on maj 2 14:48:05:303 CEST 2012 as400: Properties (1026683572) : receive buffer size = "".
Thread[main,5,main] on maj 2 14:48:05:303 CEST 2012 as400: Properties (1026683572) : send buffer size = "".
Thread[main,5,main] on maj 2 14:48:05:303 CEST 2012 as400: Properties (1026683572) : XA loosely coupled support = "0".
Thread[main,5,main] on maj 2 14:48:05:318 CEST 2012 as400: Properties (1026683572) : translate boolean = "true".
Thread[main,5,main] on maj 2 14:48:05:318 CEST 2012 as400: Properties (1026683572) : metadata source = "-1".
Thread[main,5,main] on maj 2 14:48:05:318 CEST 2012 as400: Properties (1026683572) : query storage limit = "-1".
Thread[main,5,main] on maj 2 14:48:05:318 CEST 2012 as400: Properties (1026683572) : decfloat rounding mode = "half even".
Thread[main,5,main] on maj 2 14:48:05:318 CEST 2012 as400: Properties (1026683572) : autocommit exception = "false".
Thread[main,5,main] on maj 2 14:48:05:318 CEST 2012 as400: Properties (1026683572) : auto commit = "true".
Thread[main,5,main] on maj 2 14:48:05:318 CEST 2012 as400: Properties (1026683572) : ignore warnings = "".
Thread[main,5,main] on maj 2 14:48:05:318 CEST 2012 as400: Properties (1026683572) : secure current user = "true".
Thread[main,5,main] on maj 2 14:48:05:318 CEST 2012 as400: Properties (1026683572) : concurrent access resolution = "0".
Thread[main,5,main] on maj 2 14:48:05:318 CEST 2012 as400: Properties (1026683572) : jvm16 synchronize = "false".
Thread[main,5,main] on maj 2 14:48:05:318 CEST 2012 as400: Properties (1026683572) : socket timeout = "".
Thread[main,5,main] on maj 2 14:48:05:318 CEST 2012 as400: Properties (1026683572) : use block update = "false".
Thread[main,5,main] on maj 2 14:48:05:318 CEST 2012 as400: Properties (1026683572) : maximum blocked input rows = "32000".
Thread[main,5,main] on maj 2 14:48:05:318 CEST 2012 as400: Driver AS/400 Toolbox for Java JDBC Driver (493939748) : Using IBM Toolbox for Java JDBC driver implementation.
...
Thread[main,5,main] on maj 2 14:48:07:050 CEST 2012 as400: static method Connection VPAASXXX (1241535332) : Throwing exception, id: 1 error class: 1 return code: -501 reason: [SQL0501] Cursor CRSR0001 not open. Cause . . . . . : The cursor CRSR0001 was specified in a FETCH or CLOSE statement, but the cursor is not open. Cursor CRSR0001 has one of the following conditions: -- Cursor CRSR0001 was never opened. -- The cursor CRSR0001 was opened in another program or another call of this program and the program was created with CLOSQLCSR(*ENDPGM). -- The cursor CRSR0001 was opened in another module or another call of this module and the module was created with CLOSQLCSR(*ENDMOD). -- The cursor CRSR0001 was opened in another call of this program and programs which have run SQL statements have ended and the program was created with CLOSQLCSR(*ENDSQL). -- The cursor CRSR0001 was opened in another call of this module and the activation group ended between calls. The module was created with CLOSQLCSR(*ENDACTGRP). -- The cursor was closed by a CLOSE, COMMIT, or ROLLBACK statement. -- The cursor CRSR0001 was opened under a transaction which is different than the current transaction. Recovery . . . : Do one of the following and precompile again: -- Make certain that cursor CRSR0001 is opened in the same program or module call prior to using the cursor in an FETCH or CLOSE statement. -- Specify either CLOSQLCSR(*ENDSQL), CLOSQLCSR(*ENDJOB), or CLOSQLCSR(*ENDACTGRP) when precompiling the application. -- If the cursor was closed by a COMMIT or ROLLBACK, specify HOLD on the COMMIT or ROLLBACK statement to preserve any open cursors, prepared statements, and locks on tables. state: 24501.java.sql.SQLException: [SQL0501] Cursor CRSR0001 not open. Cause . . . . . : The cursor CRSR0001 was specified in a FETCH or CLOSE statement, but the cursor is not open. Cursor CRSR0001 has one of the following conditions: -- Cursor CRSR0001 was never opened. -- The cursor CRSR0001 was opened in another program or another call of this program and the program was created with CLOSQLCSR(*ENDPGM). -- The cursor CRSR0001 was opened in another module or another call of this module and the module was created with CLOSQLCSR(*ENDMOD). -- The cursor CRSR0001 was opened in another call of this program and programs which have run SQL statements have ended and the program was created with CLOSQLCSR(*ENDSQL). -- The cursor CRSR0001 was opened in another call of this module and the activation group ended between calls. The module was created with CLOSQLCSR(*ENDACTGRP). -- The cursor was closed by a CLOSE, COMMIT, or ROLLBACK statement. -- The cursor CRSR0001 was opened under a transaction which is different than the current transaction. Recovery . . . : Do one of the following and precompile again: -- Make certain that cursor CRSR0001 is opened in the same program or module call prior to using the cursor in an FETCH or CLOSE statement. -- Specify either CLOSQLCSR(*ENDSQL), CLOSQLCSR(*ENDJOB), or CLOSQLCSR(*ENDACTGRP) when precompiling the application. -- If the cursor was closed by a COMMIT or ROLLBACK, specify HOLD on the COMMIT or ROLLBACK statement to preserve any open cursors, prepared statements, and locks on tables.
at com.ibm.as400.access.JDError.createSQLExceptionSubClass(JDError.java:819)
at com.ibm.as400.access.JDError.throwSQLException(JDError.java:699)
at com.ibm.as400.access.JDError.throwSQLException(JDError.java:669)
at com.ibm.as400.access.JDServerRowCache.fetch(JDServerRowCache.java:358)
at com.ibm.as400.access.JDServerRowCache.fetch(JDServerRowCache.java:269)
at com.ibm.as400.access.JDServerRowCache.next(JDServerRowCache.java:792)
at com.ibm.as400.access.AS400JDBCResultSet.next(AS400JDBCResultSet.java:1830)
at com.mycompany.jdbctest.Main.runsql(Main.java:65)
at com.mycompany.jdbctest.Main.main(Main.java:20)
SQL Exception:
SQL : SELECT * FROM transfersearchview where status in (1, 4)
State : 24501
Message: [SQL0501] Cursor CRSR0001 not open. Cause . . . . . : The cursor CRSR0001 was specified in a FETCH or CLOSE statement, but the cursor is not open. Cursor CRSR0001 has one of the following conditions: -- Cursor CRSR0001 was never opened. -- The cursor CRSR0001 was opened in another program or another call of this program and the program was created with CLOSQLCSR(*ENDPGM). -- The cursor CRSR0001 was opened in another module or another call of this module and the module was created with CLOSQLCSR(*ENDMOD). -- The cursor CRSR0001 was opened in another call of this program and programs which have run SQL statements have ended and the program was created with CLOSQLCSR(*ENDSQL). -- The cursor CRSR0001 was opened in another call of this module and the activation group ended between calls. The module was created with CLOSQLCSR(*ENDACTGRP). -- The cursor was closed by a CLOSE, COMMIT, or ROLLBACK statement. -- The cursor CRSR0001 was opened under a transaction which is different than the current transaction. Recovery . . . : Do one of the following and precompile again: -- Make certain that cursor CRSR0001 is opened in the same program or module call prior to using the cursor in an FETCH or CLOSE statement. -- Specify either CLOSQLCSR(*ENDSQL), CLOSQLCSR(*ENDJOB), or CLOSQLCSR(*ENDACTGRP) when precompiling the application. -- If the cursor was closed by a COMMIT or ROLLBACK, specify HOLD on the COMMIT or ROLLBACK statement to preserve any open cursors, prepared statements, and locks on tables.
Error : -501
Thread[main,5,main] on maj 2 14:48:07:065 CEST 2012 send(): send request...
Thread[main,5,main] on maj 2 14:48:07:065 CEST 2012 as400: Cursor CRSR0001 (1338396376) : Closing with reuse flag = 241.
Thread[main,5,main] on maj 2 14:48:07:065 CEST 2012 as400: Cursor CRSR0001 (1338396376) closed.
Thread[main,5,main] on maj 2 14:48:07:065 CEST 2012 as400: ResultSet CRSR0001 (1242359702) closed.
Thread[main,5,main] on maj 2 14:48:07:065 CEST 2012 send and receive(): ...
Thread[main,5,main] on maj 2 14:48:07:065 CEST 2012 send(): send request...
Thread[main,5,main] on maj 2 14:48:07:065 CEST 2012 Data stream sent (connID=1399560387) ...
00 00 00 28 00 00 E0 04 00 00 00 00 00 00 00 34
00 14 1D 02 80 04 00 00 00 00 00 00 00 01 00 01
00 00 00 01 00 00 00 00
Thread[main,5,main] on maj 2 14:48:07:065 CEST 2012 AS400Server.receive
Thread[main,5,main] on maj 2 14:48:07:065 CEST 2012 receive(): Reply not found. Waiting...
Thread[AS400 Read Daemon [system:10.20.28.2;job:564820/QUSER/QZDASOINIT],5,main] on maj 2 14:48:07:065 CEST 2012 Data stream data received (connID=1399560387) ...
00 00 00 28 00 00 E0 04 00 00 00 00 00 00 00 34
00 14 28 00
Thread[AS400 Read Daemon [system:10.20.28.2;job:564820/QUSER/QZDASOINIT],5,main] on maj 2 14:48:07:065 CEST 2012 Data stream data received (connID=1399560387) ...
80 04 00 00 00 00 00 00 00 01 1D 02 1D 02 00 00
00 00 00 00
Thread[AS400 Read Daemon [system:10.20.28.2;job:564820/QUSER/QZDASOINIT],5,main] on maj 2 14:48:07:065 CEST 2012 run(): Adding reply: 52
Thread[AS400 Read Daemon [system:10.20.28.2;job:564820/QUSER/QZDASOINIT],5,main] on maj 2 14:48:07:065 CEST 2012 run(): Notifying threads.
Thread[AS400 Read Daemon [system:10.20.28.2;job:564820/QUSER/QZDASOINIT],5,main] on maj 2 14:48:07:065 CEST 2012 run(): Threads notified.
Thread[AS400 Read Daemon [system:10.20.28.2;job:564820/QUSER/QZDASOINIT],5,main] on maj 2 14:48:07:065 CEST 2012 run(): Waiting for reply...
Thread[main,5,main] on maj 2 14:48:07:065 CEST 2012 receive(): Valid reply found: 52
Thread[main,5,main] on maj 2 14:48:07:065 CEST 2012 send(): send request...
Thread[main,5,main] on maj 2 14:48:07:065 CEST 2012 Data stream sent (connID=1399560387) ...
00 00 00 28 00 00 E0 04 00 00 00 00 00 00 00 35
00 14 1F 01 00 04 00 00 00 00 00 00 00 01 00 01
00 00 00 01 00 00 00 00
Thread[main,5,main] on maj 2 14:48:07:065 CEST 2012 as400: Statement STMT0001 (1091981526) closed.
Thread[main,5,main] on maj 2 14:48:07:065 CEST 2012 as400: Statement STMT0001 (2142386190) open. Parent: Connection VPAASXXX (1241535332) .
Thread[main,5,main] on maj 2 14:48:07:065 CEST 2012 as400: Statement STMT0001 (2142386190) : Escape processing = "true".
Thread[main,5,main] on maj 2 14:48:07:065 CEST 2012 as400: Statement STMT0001 (2142386190) : Fetch direction = "1000".
Thread[main,5,main] on maj 2 14:48:07:065 CEST 2012 as400: Statement STMT0001 (2142386190) : Fetch size = "0".
Thread[main,5,main] on maj 2 14:48:07:065 CEST 2012 as400: Statement STMT0001 (2142386190) : Max field size = "0".
Thread[main,5,main] on maj 2 14:48:07:065 CEST 2012 as400: Statement STMT0001 (2142386190) : Max rows = "0".
Thread[main,5,main] on maj 2 14:48:07:065 CEST 2012 as400: Statement STMT0001 (2142386190) : Query timeout = "0".
Thread[main,5,main] on maj 2 14:48:07:065 CEST 2012 as400: Statement STMT0001 (2142386190) : Result set concurrency = "1007".
Thread[main,5,main] on maj 2 14:48:07:065 CEST 2012 as400: Statement STMT0001 (2142386190) : Result set holdability = "1".
Thread[main,5,main] on maj 2 14:48:07:065 CEST 2012 as400: Statement STMT0001 (2142386190) : Result set type = "1003".
Thread[main,5,main] on maj 2 14:48:07:065 CEST 2012 as400: Statement STMT0001 (2142386190) : Behavior Override = "0".
Thread[main,5,main] on maj 2 14:48:07:065 CEST 2012 as400: Statement STMT0001 (2142386190) : Data to correlate statement with cursor Cursor CRSR0001 (226386081) .
...
Thread[main,5,main] on maj 2 14:48:07:096 CEST 2012 as400: Statement STMT0001 (2142386190) : Executed immediately STMT0001*, SQL Statement -->[CALL QSYS.QCMDEXC('QSYS/ENDDBMON', 0000000013.00000)].
Thread[main,5,main] on maj 2 14:48:07:096 CEST 2012 as400: Statement STMT0001 (2142386190) : Update count = 0.
Thread[main,5,main] on maj 2 14:48:07:096 CEST 2012 as400: Statement STMT0001 (2142386190) : Result set = false.
Thread[main,5,main] on maj 2 14:48:07:096 CEST 2012 as400: Statement STMT0001 (2142386190) : Number of result sets = 0.
Thread[main,5,main] on maj 2 14:48:07:096 CEST 2012 send and receive(): ...
Thread[main,5,main] on maj 2 14:48:07:096 CEST 2012 send(): send request...
...
Thread[main,5,main] on maj 2 14:48:07:112 CEST 2012 as400: Statement STMT0001 (2142386190) closed.
Thread[main,5,main] on maj 2 14:48:07:112 CEST 2012 Sending end job request...
...
Thread[main,5,main] on maj 2 14:48:07:112 CEST 2012 forceDisconnect calling readDaemon_.interrupt
Thread[AS400 Read Daemon [system:10.20.28.2;job:564820/QUSER/QZDASOINIT],5,main] on maj 2 14:48:07:112 CEST 2012 run(): Caught SocketException during disconnect:
java.net.SocketException: socket closed
at java.net.SocketInputStream.socketRead0(Native Method)
at java.net.SocketInputStream.read(SocketInputStream.java:129)
at com.ibm.as400.access.DataStream.readFromStream(DataStream.java:52)
at com.ibm.as400.access.ClientAccessDataStream.construct(ClientAccessDataStream.java:52)
at com.ibm.as400.access.AS400ThreadedServer.run(AS400ThreadedServer.java:357)
at java.lang.Thread.run(Thread.java:662)
Thread[AS400 Read Daemon [system:10.20.28.2;job:564820/QUSER/QZDASOINIT],5,main] on maj 2 14:48:07:112 CEST 2012 run(): Notifying threads after IOException.
Thread[AS400 Read Daemon [system:10.20.28.2;job:564820/QUSER/QZDASOINIT],5,main] on maj 2 14:48:07:112 CEST 2012 run(): Threads notified after IOException.
Thread[main,5,main] on maj 2 14:48:07:112 CEST 2012 Server disconnected
Thread[main,5,main] on maj 2 14:48:07:112 CEST 2012 as400: Connection VPAASXXX (1241535332) closed.
WRKPTFGRP的输出：
PTF-grupp Nivå Status
SF99626 6 Installerad
SF99626 7 Installerad
SF99616 8 Installerad
SF99616 11 Installerad
SF99610 10215 Installerad
SF99610 11256 Installerad
SF99609 102 Installerad
SF99609 114 Installerad
SF99608 23 Installerad
SF99608 28 Installerad
SF99601 21 Installerad
SF99601 24 Installerad
SF99562 17 Installerad
SF99562 18 Installerad
SF99356 21 Installerad
SF99356 22 Installerad
SF99354 8 Installerad
SF99354 13 Installerad
SF99350 6 Installerad
SF99350 9 Installerad
SF99349 14 Installerad
SF99187 23 Installerad
SF99187 24 Installerad
SF99144 3 Installerad
SF99144 4 Installerad
SF99115 22 Installerad
SF99115 23 Installerad
我建议运行跟踪以获取更多信息。
请参阅 IBM 软件技术文档：一体化工具箱跟踪指南。
还要检查连接作业日志中的诊断消息。 可以从跟踪中获取作业编号、用户和名称，也可以在连接对象上使用 getServerJobIdentifier（） 方法获取作业编号、用户和名称。
String serverJobIdentifier =
((AS400JDBCConnection)conn).getServerJobIdentifier();
一些可能有用的其他信息：
- 这是本机运行还是远程运行？
- 您使用的是哪种 JVM？
- 您是否检查过 CUME 和组 PTF 级别？
- 你能包括
WRKPTFGRP命令的输出吗？
在我们的方案中，'[SQL0501] Cursor CRSR0001 not open'错误是由另一个线程关闭的基础 AS400 作业引起的。我们能够通过创建一个 ConcurrentHashMap 来证明这一点，该 ConcurrentHashMap 跟踪与每个线程关联的 AS400 作业编号，然后用多个线程对服务器进行真正的打击......
这是我们的日志摘录...
检测到连接共享
与作业编号的连接 [QZDASOINITQUSER 198049] 提供给线程 [124] 和 [11616]
当前连接信息 [job=QZDASOINITQUSER 198049， threadId=124， connHashCode=11404926]
以前的连接 info[job=QZDASOINITQUSER 198049， threadId=11616， connHashCode=11404926]
在分析日志后，很明显，一旦第二个线程尝试使用由第一个线程关闭的连接（具有相同的底层 JobNumber），它就会失败并显示SQL0501。
为了降低此错误的可能性，我们在 Glassfish Application Server 2.1.1 [使用 JT400 6.7 的 DB2 连接池（jdbc 驱动程序版本 8.11）] 上发现了以下帮助：
- 增加连接池大小
- 减少连接重用时间