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IT-Times Mainframe

IBM z14主机
Launched 2017 Designed by IBM Common manufacturer(s) GlobalFoundries Performance Max. CPU clock rate 5.2 GHz Cache L1 cache 128 KB instruction 128 KB data per core L2 cache 2 MB instruction 4 MB data per core L3 cache 128 MB shared Architecture and classification Technology node 14 nm Instruction set z/Architecture Physical specifications Cores 10

 

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IBM z15主机
Launched 2019 Designed by IBM Performance Max. CPU clock rate 5.2 GHz Cache L1 cache 128 KB instruction128 KB dataper core L2 cache 4 MB instruction4 MB dataper core L3 cache 256 MBshared Architecture and classification Technology node 14 nm Instruction set z/Architecture Physical specifications Cores 12

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IBM z16主机
The IBM z16 mainframe, based on the Telum processor, was introduced on April 5, 2022.The Telum microprocessor includes AI processors, allowing clients to infuse AI inferencing for real-time insights.

 

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IBM zEnterprise EC12主机
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IBM zEnterprise System 企业级大型机
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Information Management System (IMS) ist ein Informationssystem des Unternehmens IBM, das auf IBM-z-Systems-Servern unter z/OS betrieben werden kann. Es besteht aus den Komponenten IMS DB (hierarchisches Datenbanksystem) und IMS TM (Transaktionsmonitor – frühere Bezeichnung: IMS DC). Der IMS TM kann auch ohne die IMS DB eingesetzt werden. Er bietet Schnittstellen via APPC, MQSeries, TCP/IP und Java.
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索引顺序存取方法
Index Sequential Access Method (ISAM) ist eine von IBM Ende der 1960er Jahre entwickelte Zugriffsmethode für Datensätze einer Datei, die sowohl (sortiert) sequentiellen als auch wahlfreien (random) index-basierten Zugriff zulässt.

索引顺序存取方法(ISAM, Indexed Sequential Access Method)最初是IBM公司发展起来的一个文件系统,可以连续地(按照他们进入的顺序)或者任意地(根据索引)记录任何访问。每个索引定义了一次不同排列的记录。现在这个概念用在许多场合:

  • 特指IBM公司的ISAM产品
  • 数据库系统中提供用户接口从数据文件中检索数据。
  • 通常指,数据库的索引,这种索引被大多数数据库所采用,包括关系数据库或其它。

在ISAM系统,数据组织成有固定长度的记录,按顺序存储的。

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RRRunning Java using BPXBATCH
//BPXBATCH JOB (999,XXX),'JAVA BPXBATCH',CLASS=A,MSGLEVEL=(1,1)
// MSGCLASS=X,REGION=0M,NOTIFY=&SYSUID
//********************************************************************
//* Run Java under a Unix System Service shell
//********************************************************************
//STEP1 EXEC PGM=BPXBATCH,
// PARM='SH java com.foo.MyClass arg1 arg2'
//STDIN DD DUMMY
//STDOUT DD PATH='/tmp/&SYSUID..bpxbatch.out',
// PATHOPTS=(OWRONLY,OCREAT,OTRUNC),
// PATHMODE=SIRWXU
//STDERR DD PATH='/tmp/&SYSUID..bpxbatch.err',
// PATHOPTS=(OWRONLY,OCREAT,OTRUNC),
// PATHMODE=SIRWXU
//STDENV DD *
CLASSPATH=/u/myuid/classes:/u/myuid/lib/foo.jar:/u/myuid/lib/bar.jar
//
//*********************************************************************
//* Copy HFS output files to SYSOUT, since BPXBATCH can only write
//* STDOUT and STDERR to HFS files.
//*********************************************************************
//STEP2 EXEC PGM=IKJEFT01,DYNAMNBR=300,COND=EVEN
//SYSTSPRT DD SYSOUT=*
//HFSOUT DD PATH='/tmp/&SYSUID..bpxbatch.out'
//HFSERR DD PATH='/tmp/&SYSUID..bpxbatch.err'
//STDOUTL DD SYSOUT=*,DCB=(RECFM=VB,LRECL=133,BLKSIZE=137)
//STDERRL DD SYSOUT=*,DCB=(RECFM=VB,LRECL=133,BLKSIZE=137)
//SYSPRINT DD SYSOUT=*
//SYSTSIN DD *
OCOPY INDD(HFSOUT) OUTDD(STDOUTL)
OCOPY INDD(HFSERR) OUTDD(STDERRL)
//
 
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Das JES-Subsystem ist ein z/OS-Subsystem, über das Sie auf Ihre Jobs in JES zugreifen können. Im JES-Subsystem können Sie Jobstatus anzeigen, die Jobausgabe aufrufen und folgende Aktionen für Jobs ausführen: Abbrechen Löschen Anhalten Neu starten Freigeben JCL anzeigen Vergleichen Für z/OS existieren zwei Job Entry Subsystems: JES2 und JES3, wobei JES2 am weitesten verbreitet ist.
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逻辑分区
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