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Oracle XA Exception error code
case 7: return "The transaction branch has been heuristically committed."; case 8: / return "The transaction branch may have been heuristically completed."; case 5: return "The transaction branch has been heuristically committed and rolled back."; case 6: return "The transaction branch has been heuristically rolled back."; case 9: return "Resumption must occur
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IBM Java support 之 MustGatherDocument
1.MustGather: Generating Userdumps For Performance, Hang or High CPU Issues on WindowsIf you are experiencing one of the symptoms listed below, this MustGather will assist in collecting userdump (user.dmp) files.2.MustGather: Performance, Hang, or High CPU Issues on HP-UXYou are experiencing performance degradation, hang, no response, hung threads, CPU starvation, high CPU utilization, deadlocks, timeouts, or network problems, but are unsure what to collect. This MustGather
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浅谈AIX环境下的Java性能调优
from IBMJava 性能准则 在编写Java应用程序时，以下是基本的准则： 使用字符串缓冲区而不是字符串连接，当进行连续字符串操作时要避免不必要地创建那些最终必须经过垃圾回收的对象。 避免连续写入 Java 控制台以减少字符串操作、文本格式化以及输出的花费。 必要时通过使用变量的原语类型来避免对象创建和操作的花费。 经常高速缓存用过的对象以减少必须的垃圾回收数量，并且避免重复创建对象的需求。 尽可能分组本地操作以减少 Java 本地接口（JNI）的调用。 只有在必要时再使用同步方法，以此限制在 JVM 和操作系统中的多
