TransactionalEditingDomainImpl editingDomain = (TransactionalEditingDomainImpl) diagramEditor.getEditingDomain(); editingDomain.getCommandStack().execute(new RecordingCommand(editingDomain) { @Override protected void doExecute() { //do something } })…

1.问题:连接线旁边没有文字标签和箭头 文字标签:在gmfmap里的Connection Mappping下增加Label Mapping元素:箭头:在gmfgraph里为Polyline Connection指定一个Polyline Decorator作为source/target decoration,要为这个Decorator创建一些Template Point来决定箭头的形状,例如指定(-1,-1), (0,0), (-1,1). 2.让一个图形可以在另一个图形里随意改变位置 在gmfg…

A multiprocessor computer system is provided having a multiplicity of sub-systems and a main memory coupled to a system controller. An interconnect module, interconnects the main memory and sub-systems in accordance with interconnect control signals…

https://stackoverflow.com/questions/11531352/how-to-rollback-a-transaction-in-a-stored-procedure BEGIN TRANSACTION; BEGIN TRY -- Some code COMMIT TRANSACTION; END TRY BEGIN CATCH ROLLBACK TRANSACTION; END CATCH; 执行的存储过程需要transaction的话,在调用的时候传入 BEGIN…

Part I-An introduction to transactions If you look at any introductory article or book on J2EE, you'll find only a small portion of the material devoted to the Java Transaction Service (JTS) or the Java Transaction API (JTA). This is not because JTS…

Oracle通过锁来实现数据库的并发控制 Oracle Database automatically locks a resource on behalf of a transaction to prevent other transactions from doing something that requires exclusive access to the same resource.  The database automatically acquires different type…

select event,count(1) from gv$session group by event order by 2;exec dbms_workload_repository.create_snapshot;select 'alter system kill session '''||sid||','||serial#||''';' from v$session where event='latch free'; SET LINESIZE 200SET NEWPAGE NONECOL…

SQL return codes that are preceded by a minus sign (-) indicate that the SQL statement execution was unsuccessful. IBM DB2 SQL error code list 官方文档地址:https://www.ibm.com/support/knowledgecenter/SSEPEK_10.0.0/codes/src/tpc/db2z_n.html -007STATEMENT CO…

Return value/code Description 0x00030200 STG_S_CONVERTED The underlying file was converted to compound file format. 0x00030201 STG_S_BLOCK The storage operation should block until more data is available. 0x00030202 STG_S_RETRYNOW The storage operatio…

目 录 1 实施需求 2 修改主机名 2.1 停止HAS服务 2.2 修改主机名 3 重新配置服务 3.1 使用root用户重新配置CSS & OHAS服务 3.2 设置cssd自动启动属性 3.3 重启OHAS 3.4 检查css & ohas状态 3.5 添加监听资源并启动 3.6 创建pfile文件 3.7 添加asm实例资源 3.8 设置asm资源自动启动属性 3.9 设置asm_diskstring属性 3.10 启动asm实例 3.11 验证asm磁盘可被识别 3.12 创建新…