2
有兩個函數A和B與事務註釋中定義的。Propagation.REQUIRES_NEW引起LockWaitTimeOutException
我從A.
@Transactional(value=Constants.READ_WRITE_REQUEST)
public int A(....){
B();
}
@Transactional(propagation=Propagation.REQUIRES_NEW,value=Constants.READ_WRITE_REQUEST)
public int B(....){
C();
}
@Transactional(value=Constants.READ_WRITE_REQUEST)
public int C(....){
...
}
它導致調用B插入
Caused by: java.sql.SQLException: Lock wait timeout exceeded; try restarting transaction
at com.mysql.jdbc.SQLError.createSQLException(SQLError.java:1055)
at com.mysql.jdbc.SQLError.createSQLException(SQLError.java:956)
at com.mysql.jdbc.MysqlIO.checkErrorPacket(MysqlIO.java:3491)
at com.mysql.jdbc.MysqlIO.checkErrorPacket(MysqlIO.java:3423)
at com.mysql.jdbc.MysqlIO.sendCommand(MysqlIO.java:1936)
at com.mysql.jdbc.MysqlIO.sqlQueryDirect(MysqlIO.java:2060)
at com.mysql.jdbc.ConnectionImpl.execSQL(ConnectionImpl.java:2542)
我從功能B和問題取出Propagation.REQUIRES_NEW得到了解決。
是因爲舊的交易持有鎖而新的交易創建了嗎? 對此有何想法?