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@Florida

after you learn sqlserver, you will feel confident that mission critical system will stay with Oracle. for example.

walkthrough(walkthrough)
1. sqlserver t-sql error handling has long way to catch up with plsql exception handling.
2. sqlserver do not have undo tablespace, rely on transaction log for both rollback and roll-forward. trade off is bad performance and more locking issue. means less concurrency .
3. sqlserver is on windows platform. oracle run majorly on unix.
I don't want to mention others, like row level locking, HA, security... etc.

sqlserver advantage is that it's a small shop, easy to start with. DTS is very good tool. but I don't think it's good enough to handle complicated business and hundreds of concurrent users.
(#3313949@0)
Last Updated: 2006-11-11
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Replies, comments and Discussions:

  • 工作学习 / 专业技术讨论 / 这个坛子有不少SQLSERVER的高手,问一下哪个学校的SQLSERVER课不错?在线等.多谢! -oracle789(BeefLover); 2006-11-9 (#3311296@0)
    • 6年前去过CDI的SQL SERVER COURSE. INSTRUCTOR 很不错, 讲的条理清晰. -looi500(looi); 2006-11-9 (#3311474@0)
      • 多谢回答. 不过现在CDI好象没有SQLSERVER的课. 我计划跟跟形势朝MCITP:DBA努力一下, 好象没有(国人办的)学校提供. -oracle789(俺也要学SQLSERVER); 2006-11-9 (#3311509@0)
        • CDI 的WEB SITE -looi500(looi); 2006-11-9 (#3311538@0)
          • 多谢.我还以为是CDI COLLEGE呢. 不过目前没有那么多的BUDGET. -oracle789(俺也要学SQLSERVER); 2006-11-9 (#3311919@0)
            • 没银问啥,自摸吧 -binc(管理员); 2006-11-12 (#3316562@0)
    • 不知道你的背景和学这个做何打算? 个人认为, 你要是windows/.net 程序员的话, 可以自己看看书, 考一门微软的课就比上那些培训强一些... 要是没有背景的话, 我就不好说了... 用SQL Server的都不是什么大系统, 很少有专门的DBA... -poohbear(毛毛熊); 2006-11-9 (#3311743@0)
      • 这话说大了吧。SQL SERVER用在大系统的多了去了。就我所知，很多大公司都是跟微软有Affiliate的关系，只用微软的产品的。虽然我很讨厌微软，但这是事实。 -bdbs(不多不少); 2006-11-9 (#3311751@0)
        • 大公司都会用微软的产品, 但是很少用到核心上, 连微软自己前些年还被指用Oracle哪... 我现在工作的公司不是什么大公司, 就只用SQL SERVER做APP... 核心数据前20年用mainframe, 现在正要往oracle上移...APP程序员为自己的SQL负责, 我当然希望有DBA啊 -poohbear(毛毛熊); 2006-11-9 (#3311785@0)
          • 我想稳定性是问题, SQL SERVER隔三差五地就要重启动, MAINFRAME只停电的时候重启动过, 我以前的公司用Oracle, 也没见重启动... -poohbear(毛毛熊); 2006-11-9 (#3311801@0)
      • NASDAQ算不算大系统？？？ -zhihaoxx()(); 2006-11-9 (#3311982@0)
        • 既然这么说了, 那就上培训班, 去nasdaq.... That's absolutely a wonderful path! -poohbear(毛毛熊); 2006-11-9 (#3312107@0)
    • 估计没有人回答你的问题，是因为高手都不是学校里学出来的。:( -bdbs(不多不少); 2006-11-9 (#3311761@0)
    • 兄弟们,没想到我这个问题引起HIGH-LEVEL的争论. 你看我的ID就知道俺是啥出身.但SQLSERVER的崛起是个不争的事实. -oracle789(俺也要学SQLSERVER); 2006-11-9 {273} (#3311976@0)
      前段时间看过一个PAPER,在联想到公司的变化,彻底改变俺以前鄙视MS的心态.现在SQLSERVER的市场占有率已接近ORACLE(千万别听LARRY和CHARLES瞎摆活,提到MS,就说什么那个公司在SEATTLE的那个), 而且用到MISSION-CRITICAL的比例和ORACLE不相上下. 咱不说这个了, 快指点哪有2005 ADMIN的课吧. 急着呢!
      • 做Oracle的转MS SQL还用学什么嘛？随便找点文档看看就好了 -hard20(hard20); 2006-11-9 (#3311992@0)
      • 老大对DB2什么看法？ -thisunreal(饭得志); 2006-11-10 (#3312260@0)
        • 如果不想去美国,就不要考虑db2，加拿大db2职位太少。 -ebusiness(每天进步多一些); 2006-11-10 (#3312264@0)
      • 还没成热点话题，算不上争论。呵呵。不过如hard20所说，你有那家底，找什么学校呀。看这里：
        -bdbs(不多不少); 2006-11-10 (#3312344@0)
        • 这个俺早就DOWN下了. -oracle789(俺也要学SQLSERVER); 2006-11-10 (#3312362@0)
      • after you learn sqlserver, you will feel confident that mission critical system will stay with Oracle. for example. -walkthrough(walkthrough); 2006-11-11 {612} (#3313949@0)
        1. sqlserver t-sql error handling has long way to catch up with plsql exception handling.
        2. sqlserver do not have undo tablespace, rely on transaction log for both rollback and roll-forward. trade off is bad performance and more locking issue. means less concurrency .
        3. sqlserver is on windows platform. oracle run majorly on unix.
        I don't want to mention others, like row level locking, HA, security... etc.

        sqlserver advantage is that it's a small shop, easy to start with. DTS is very good tool. but I don't think it's good enough to handle complicated business and hundreds of concurrent users.
        • redo and undo 各个公司实现机制不一样,因而和多少用户"more locking issue. means less concurrency "似无关系 -neemliu(四季如冬); 2006-11-11 {548} (#3314132@0)
          WHY "2 sqlserver do not have undo tablespace, rely on transaction log for both rollback and roll-forward. trade off is bad performance and more locking issue. means less concurrency " ?

          redo and undo 各个公司实现机制不一样, INFORMIX 也是用逻辑日志实现REDO 和UNDO(物理日志记录CHECKPOINT前的IMAGE).

          DB2 也用LOG FILE 实现, MS SQL 也在进步.

          REDO AND UNDO都是系统使用的(ORACLE和其它). 用户是LOCK不了的, 因而和多少用户 "locking issue. concurrency "似无关系.
          UNDO TABLESPACE 是逻辑概念,也是通过DATAFILE来物理实现的, 本质上也是LOGFILE.
    • you can join my study group. I passed 70-431 last month. currently on upgrading to .NET 2.0. DBA would be my next goal. -sunday8(sunday8); 2006-11-10 (#3312273@0)
      • Do you have MS 70-431 Ebook CD? Can I borrow and make a copy? Thanks. -happycat(Kiki); 2006-11-10 (#3312925@0)
        • no. I don't have the CD. sorry.. -sunday8(sunday8); 2006-11-10 (#3313358@0)
          • Thanks anyway. -happycat(Kiki); 2006-11-11 (#3314092@0)
    • 你最好还是能强调你的长处，不要什么都不精. 把OCM考出来比MSSQL有钱图. -binc(管理员); 2006-11-13 (#3317515@0)

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