Sybase报Invalid packet type 0x22错误解决
Sybase报Invalid packet type 0x22错误解决
今天使用Sybase(15.7 Developer版)查询DB时,遇到了很诡异的错误,错误异常如下:
[java] www.zzzyk.com
<span style="font-size:12px;"><-- java.sql.SQLException: TDS Protocol error: Invalid
packet type 0x22
packet type 0x22
at net.sourceforge.jtds.jdbc.TdsCore.nextToken(TdsCore.java:2284)
at net.sourceforge.jtds.jdbc.TdsCore.isDataInResultSet(TdsCore.java:792)
at net.sourceforge.jtds.jdbc.JtdsResultSet.<init>(JtdsResultSet.java:146)
at net.sourceforge.jtds.jdbc.JtdsStatement.executeSQLQuery(JtdsStatement.java:424)
at net.sourceforge.jtds.jdbc.JtdsPreparedStatement.executeQuery
(JtdsPreparedStatement.java:693)
(JtdsPreparedStatement.java:693)
at com.trs.infra.persistent.BaseObjs.loadCurrentData(BaseObjs.java:1321)
at com.trs.infra.persistent.BaseObjs.open(BaseObjs.java:1437)
at com.trs.ekp.stat.obtain.StatResultObtainMgr.queryStatResults(StatResultObtainMgr.
java:194)
java:194)
at com.trs.ekp.stat.domain.ExpertLevelMgrTest.testGetAllExpertLevels
(ExpertLevelMgrTest.java:51)
(ExpertLevelMgrTest.java:51)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl
.java:25)
.java:25)
at java.lang.reflect.Method.invoke(Method.java:597)
at junit.framework.TestCase.runTest(TestCase.java:154)
at junit.framework.TestCase.runBare(TestCase.java:127)
at junit.framework.TestResult$1.protect(TestResult.java:106)
at junit.framework.TestResult.runProtected(TestResult.java:124)
at junit.framework.TestResult.run(TestResult.java:109)
at junit.framework.TestCase.run(TestCase.java:118)
at org.eclipse.jdt.internal.junit.runner.junit3.JUnit3TestReference.run(JUnit3TestReference
.java:130)
.java:130)
at org.eclipse.jdt.internal.junit.runner.TestExecution.run(TestExecution.java:38)
at org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.runTests
(RemoteTestRunner.java:467)
(RemoteTestRunner.java:467)
at org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.runTests
(RemoteTestRunner.java:683)
(RemoteTestRunner.java:683)
at org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.run
(RemoteTestRunner.java:390)
(RemoteTestRunner.java:390)
at org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.main
(RemoteTestRunner.java:197)
(RemoteTestRunner.java:197)
Caused by: net.sourceforge.jtds.jdbc.ProtocolException: Invalid packet type 0x22
at net.sourceforge.jtds.jdbc.TdsCore.nextToken(TdsCore.java:2271)
... 24 more
</span>
经过定位,最终发现是指定的表中的字段个数太多(我这个表中有575个字段),把sql语句
修改成select 字段1,字段2 …… from 表
修改成select 字段1,字段2 …… from 表
问题不再重现。
select * 时,底层虽然也会提取所有字段,但是会报这个错误,如果我们把所有字段列
在select后面,则不会报错,可以正确提取出字段。sql语句变为:select Field1,Field2,
Feild3…… from TableName.
在select后面,则不会报错,可以正确提取出字段。sql语句变为:select Field1,Field2,
Feild3…… from TableName.
后来又测试了下,发现对如果是对decimal字段类型进行排序时,也会报这个错。