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  • What are the ways to build a failover cluster?

    - by light
    I have a task where I need to build a failover cluster in two cases: first with servers on Red Hat Enterprise 5.1 and second with SUSE Linux Enterprise 11 SP1. Both cases have SAN. I know there are many ways to build failover cluster, but I can’t find out more, so I need next: The ways to build it? I know only virtualization. Any good book or resource to broad my mind? I’ll be glad to hear any suggestion. Thanks! EDIT #1: failover of servers with bussiness application on it. EDIT #2: will be great to hear summary about solutions with SLES servers? EDIT #3: So if I understand correctly, in my cases the main ways are to use internal solutions or virtualization. So now I have additional questions: Does manufacturer of blades provide some solution? For example HP or IBM. (Without virtualization) Do I need additional server to control "heartbeat" between main and redundant servers? (Virtualization) For example I have several physical servers with VMs. Do I need additional server to control availability of VMs and to move VMs to another physical server in the case their physical server failure? Sorry for my poor English. EDIT #4: Failover of VM or OS on physical server. In both cases will be used SAN , it's not specified, but I think with file system image on it. I started to think that my question is stupid and I need to remake it.

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  • Oracle Solaris 11 pkg fix

    - by Larry Wake
    Bob Netherton explains why Solaris 11 pkg fix is his new friend. "So far so good. Then comes an oops... This is where you generally say a few things to yourself, and then promise to quit deleting configuration files and directories when you don't know what you are doing. Then you recall that the new Solaris 11 packaging system has some ability to correct common mistakes (like the one I just made)." [Read More]

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  • 11g ???:Active Data Guard

    - by JaneZhang(???)
    ?Oracle 11g??,????(physical Standby)???redo???,???????,???mount??11g??,???redo???,????????read-only??,????Active Data Guard ???Active Data Guard,?????????????????,??????????????   Active Data Guard???????????,??,????????????,????????,????redo??,????????????,??????????? Oracle Active Data Guard ?Oracle Database Enterprise Edition?????,??????????????   ????Active Data Guard, ??????? read-only ????,???? ALTER DATABASE RECOVER MANAGED STANDBY DATABASE????????????:??????COMPATIBLE ????????11.0.0?  ???????Active Data Guard,???V$DATABASE????"READ ONLY WITH APPLY':      SQL> SELECT open_mode FROM V$DATABASE;      OPEN_MODE      --------------------      READ ONLY WITH APPLY   ????????????,???????real-time apply:   SQL>ALTER DATABASE RECOVER MANAGED STANDBY DATABASE USING CURRENT LOGFILE; ?????????read-only????????:    • Issue SELECT statements, including queries that require multiple sorts that leverage TEMP segments    • Use ALTER SESSION and ALTER SYSTEM statements    • Use SET ROLE    • Call stored procedures    • Use database links (dblinks) to write to remote databases    • Use stored procedures to call remote procedures via dblinks    • Use SET TRANSACTION READ ONLY for transaction level read consistency    • Issue complex queries (such as grouping SET queries and WITH CLAUSE queries) ??????????read-only????????:    • Any DMLs (excluding simple SELECT statements) or DDLs    • Query accessing local sequences    • DMLs to local temporary tables    ?????Active Data Guard ??: • ????????????????? • ???Oracle Real Application Clusters (Oracle RAC) ,?????? • RAC???RAC??    Oracle Data Guard ?????,,????????:    * ?????????????????:     http://docs.oracle.com/cd/B28359_01/server.111/b28294/create_ps.htm   * ???Oracle Real Application Clusters (Oracle RAC) ,??????:     http://www.oracle.com/technetwork/database/features/availability/maa-wp-10g-racprimarysingleinstance-131970.pdf   * RAC ???RAC ??:     http://www.oracle.com/technetwork/database/features/availability/maa-wp-10g-racprimaryracphysicalsta-131940.pdf  ??Active Data Guard???????,?????:    http://www.oracle.com/technetwork/database/features/availability/maa-wp-11gr1-activedataguard-1-128199.pdf     ??Oracle Maximum Availability Architecture Best Practices?????,???:   http://www.oracle.com/goto/maa

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  • ID?????????

    - by ???02
    ID????????????????????????ID????????????????????????Oracle Identity Manager????????????????????????????????Oracle Identity Analytics ??????????????????????ID???????????????Oracle Identity Manager -- ???????????ID?????????Oracle Identity Manager (?? OIM )??ID?????????????????????????????????ID???????????????????????????????????????????????????????????????????????????OIM ?????????????????????????????????????????????????????? OIM ??????????OIM ????????????????????????/??/???????/??????????????????????????????????????????????????????????????????????OIM ???????????????????????????????????????????????????????????????????(1)ID?????????:??~??~??~???????????????????????????????????(2)ID????????:??????ID???????????????·??????????????????(3)??ID????:????????????????????????ID·??????????????????????????????????????(4)???????????????????:???????????1???????????????????????????????????(5)ID??????????????:???????????????ID???·????????????????????(6)ID???????????????:ID?????????·????????????????????????????????????????Oracle Identity Analytics -- ????????·?????????????????Oracle Identity Analytics? (?? OIA )????????????(??)???????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????OIA????????????????????????????????????????????????????(1)??????????????????????????????????????(2)?????????????????? : ??(hierarchical)???(relationship)???????????????(3)ID?????????(OIM?)????????????????????? ??????????? ?????? Oracle Direct

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  • Errata of Expert Oracle Exadata Chinese Edition-???? Oracle Exadata ???

    - by Bandari Huang
    P10 ????CPU???Westmere??,?????AES??????,????????????????????? Because these CPUs are in the Westmere family, they have built in AES encryption support, which essentially provides a hardware assist to encryption and decryption. P39 ????????????,???????????????????????? particularly with the higher levels of compression, the decision was made to do the decompression on the storage servers.  

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  • ??1???????????????????????????????|Oracle Coherence|??????

    - by ???02
    　????????????????????????????????????????????????????????????????????????????????　???????????????????????????????????????????????????????????????????????????????　???????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????　????????????????????????????????SEO???????????????????????????????????????????????????????????????EC???????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????　???????????????????????????????????????????????????????????/??????????????????????????????????????????????????????????(???)????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????　?????????????????????????????????????????????????????????????????????????(????)?????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????IT???????????????????????????????????????????????　??????????????EC???????????????????????????????????????????????????????????????????????????????????????EC??????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????…?Coherence????????????!?????EC??????????!?????????????????????????????????????????????????????????????????????????????????????　?????????????????　????????????????????????!????????????????????·????????????????????????????????????????????????

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  • ??2???????·???·???????????????|Oracle Coherence|??????

    - by ???02
    ?????????????????????·?????????????????????????·??????????????????????????????·???????????????·???·??????????????????????????????????????????????????????·??????????????????????·????????????????????·?????????????????????????·?????????(???????????·??????)?????????·??????????????????????????????????????????????????????????/????????????????????????????????????????????????·?????????????(?2?1)??????????????????????????????·??????????????????????????????????????????·????????????????????????????????????????1???????????????????????????????????????????????????????????????????????????????????????????2???????????????????????????·????????????·????????????????????????????·????????????????????·?????????????·????????????·??????????·?????????????????????????????????????????????????????????????????????????????????????????????????3 ?????????????·??????????????·?????????????????????·????????????????????????????????????????????????????????????????????????????????????????·?????????????????????·?????????????????????????????·?????1?????????·???????????(???????????????????????????????????????????????????????????????????)?????????????????/??????????????????????2?????????·????????(???????????1???)????????·?????????????1????????????????????????????????????????????????????4??????????????????1,000?/??????????????????????????·????????????????????????·???????????????????????????1?????1,000????????????????????????????·????????????????????????1?????1???????1???????·????????????????????????????/??????????????2,000?/??????????????500?/??????????????????·???·???????????????????2??????????????2??????????1　???????·????????????????????·????????????·??????????????????????????2???????????????????????????????? 2　?????2?????????????????????????(??????Person)????????????????????????????????????·?????????????????123??

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  • ??3???????·???·???????????:?????|Oracle Coherence|??????

    - by ???02
    ?????·???·????????????????????2????????????????????????????·???·??????????????????????????????????·???·??????????????????????·??????????????????????????????????????????????????????????4????????????(3)???????????????·??????????????(4)????????????????????????????(5)??????????????????????????(6)??????·?????????????(3)???????????????·?????????????????????????????????????????????????????????????????????????????????????????·???·?????????????????????????????????????????????????????·??????????????????????????????????????????????????????????·???·????????·????????????????????????????????????????(??????8)??????????????????????????????????????·???????????????????????????????????????????????????(4)????????????????????????????????????????????????????????????????? ????????·???·??????????·???????????????????????·???·???????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????(?????????????????????????)??????????????????????????????????????????(5)???????????????????????????????·????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????·??????????????????????????????·?????????????????????????????????????????????·???·?????????????????????????????????????????????????????????????????????????????????????????????????????????????????????(?9)?????(6)??????·???????????????????????1?????????????????·??????????????????????????????·?????????????????????????????????????·???????????1?????·?????????????????????????????????????????Coherence?????????????????????·?????????????????????????·???????????????????????????????????????·???????"???????·???"????????·???·?????????????(?10)???????????????????????????·???????????????????????????????????????????·??????????????????·???·???????????????????????????????????????????????????????????????????????????????????????????????????????·???·????????????·???????????????????????????????????????????????????????????·????????????????????????·???·?????1?????????????????????????????????????????????????????????????????????????????????????????????????????????????????????12

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  • ??????(????·?????)

    - by ???02
    ??????(????·?????)??????????????????????????????????????????????????????????????????????????????????·??????????????????????????????????????Web?????·???????????????????????????????????????????????????????????????????·????????????????????????????????????????????????Web???????????Oracle Access Manager????????????????????????·??????????Oracle Enterprise Single-Sign On Suite????????????????????????????????????-??????????-?????????????Oracle Access Manager -- Web??????????·???????????????Oracle Access Manager??Web??????????????·????????????????????????????????????????????· ?????·????????????????????????????????????????????????????????????? ??????(1)??????:????·?????????????????????(2)???????????:??Web?????????????????????????????????????(3)????????:??????????????????(4)??????:????·???????????????????????Oracle Enterprise Single Sign-On Suite -- ???????????????·????????Oracle Enterprise Single Sign-On Suite??Web??????????????????????????????(?????????????????????????????)? ?????·????????????????????????·????????????????????????????????????????? ???????????????????????????? ??????(1)???????????????(2)??????????????????????????????????????????????????????????????????(3)??????????Windows???LDAP??????????????(4)Windows???????????????????????????????????(5)ID??????????????????????ID???·?????????????????????? ?????? Oracle Direct

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  • ??3???????·???·???????????:?????|Oracle Coherence|??????

    - by ???02
    ???????? ???????? Fusion Middleware???????? ??????????? ???????? Fusion Middleware??SC?? ???????????????? ???????? Fusion Middleware??SC?? ????????????????·???·?????????????????????????·???·???????????????????????????????????????????????????????????????????????????????????????·???·?????????????3???????????????·??????????·???????????????????????????????????????·?????????????·???·???????????????????????5?????????·???·??????????????????????·???????????????????????·???·???????????????????????????????????????????????·??????????????????????????????????????????????????????????????????????????????????(1)??????·???????????????(2)???HTTP?????????????2???????????????????????????·???·??????????????????????????????????????????????????(1)??????·??????????????·????????????????????·?????????????????????????????????????????????????????????????????·??????????????????????????????????????·???·????(JVM????)????·????????????????????????·??????(GC)????????????·????????????????????????????????·??????????????????????????????????????????????????????????????????????????????????????????????????????????OutOfMemoryError????????????????·???·????????????????????????????????????·???(??·?????????·???)????????????????????????????????????????????????(?6)??????????????????????????·??????????????????????????????????????·???·??????????·???????????????????????????????????·?????????????????????????????????????????(2)???HTTP???????????HTTP???????????????????????????????????????????????????????????????????????1??????????????????????????????????????????????????????·????????????·??????/???????????·????????????????????????????????????·???????GC?????????GC???????????????????????????????????·?????????·??????????????????????????????????????????????????(????????????·???????????????????????)?????????????????????????????·???·??????HTTP?????????????????????(?7)??7???????????????????·???????????????????????????????GC???????????????????????????·???????????????????????????????·?????????????????????????·??????????????????·???·???????????????3??3　???????????????????????·???·???????HTTP???????????????????????12??

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  • ??1???????????????!???????????????|Oracle Coherence|??????

    - by ???02
    ???????? ???????? Fusion Middleware???????? ??????????? ???????? Fusion Middleware??SC?? ???????????????? ???????? Fusion Middleware??SC?? ???????????????????????????·??????????????????/????????????????????????????????"??????·????(??????·????)"??????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????!??????????????????????????????????????????????????????????????????????????????????????????????????????"??"???????????????????????????????????????????????????????????????????????????????????????????????????----????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????(?????????????????????????????)?????????????????????????????????????????????????????????????????????????????????????????????·???????????????????????????????????????????????1??????????????????????????????????????????????????????????????????????/????????????????????????·??????????????????????????????????????????????????????·???????????????????????????????????????????????????????????????????????????????????·???????????????????????????????????????????????????????????????????????????????????????·????????????????·??????????????????????????????????????????????????????????????????????????????·?????????????????????????I/O??????????????????????----???????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????(ROI:Return On Investment)????????????????????????????????????????????????????????????4???????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????4????????????1)??????????????(???·??????????????????)2)??????????????(????????·??????/???????)3)????????????????????(???????????????????????????????)4)????????????????????????(???????)?????(1)?(2)???????????????????????????????????????????????????????????????????????????????RDBMS??????????????????(3)?(4)???????????????????????????????????????????????RDBMS??????????????????????????????????????????????RDBMS???????????????????????ROI????????????(3)?(4)??????????????????????(1)?(2)??????????????????????(??????????????·?????)????????????????????????????"?????"????????????????????????????????????????????????????????????????????????????????????????????RDBMS(?????)????????????????????????????·??????????????????????????(3)?(4)????????????????????????????????/??????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????IT??????Vol.22??????????????????????·??????????IT???????????????????????12??

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  • ??2???????·???·???????????????|Oracle Coherence|??????

    - by ???02
    ???????? ???????? Fusion Middleware???????? ??????????? ???????? Fusion Middleware??SC?? ???????????????? ???????? Fusion Middleware??SC?? ????????????????·???·??????????????????????????????????·???·??????????????????????????????????????????????????????????????????????????????????2??????????????????????·???????????????·????????????????????????????????·????????????????·??????????????????????????????????????????????????????????????????????????(????????·??????)?????????????????????????(?1)?1???????·?????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????·?????????????????????????????????????????????????????CPU??(?????????????????·??????)??????1????????????????????????????????????????????????????1,000?/???????????????????????????1??????1,000?????????????????·?????????????????????????????????????????·?????????????????(???????????????????)???????????????????????????????·????????????????????1???????????????????????????????????????????123??

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  • Writing a docx file to a BLOB using Java 1.4 inside Oracle 10g

    - by Jon Renaut
    I'm trying to generate a blank docx file using Java, add some text, then write it to a BLOB that I can return to our document processing engine (a custom mess of PL/SQL and Java). I have to use the 1.4 JVM inside Oracle 10g, so no Java 1.5 stuff. I don't have a problem writing the docx to a file on my local machine, but when I try to write to BLOB, I'm getting garbage. Am I doing something dumb? Any help is appreciated. Note in the code below, all the get[name]Xml() methods return an org.w3c.dom.Document. public void save(String fileName) throws Exception { ZipOutputStream zos = new ZipOutputStream(new FileOutputStream(fileName)); addEntry(zos, getDocumentXml(), "word/document.xml"); addEntry(zos, getContentTypesXml(), "[Content_Types].xml"); addEntry(zos, getRelsXml(), "_rels/.rels"); zos.flush(); zos.close(); } public java.sql.BLOB save() throws Exception { java.sql.Connection conn = DbUtilities.openConnection(); BLOB outBlob = BLOB.createTemporary(conn, true, BLOB.DURATION_SESSION); outBlob.open(BLOB.MODE_READWRITE); ZipOutputStream zos = new ZipOutputStream(outBlob.setBinaryStream(0L)); addEntry(zos, getDocumentXml(), "word/document.xml"); addEntry(zos, getContentTypesXml(), "[Content_Types].xml"); addEntry(zos, getRelsXml(), "_rels/.rels"); zos.flush(); zos.close(); return outBlob; } private void addEntry(ZipOutputStream zos, Document doc, String fileName) throws Exception { Transformer t = TransformerFactory.newInstance().newTransformer(); ByteArrayOutputStream baos = new ByteArrayOutputStream(); t.transform(new DOMSource(doc), new StreamResult(baos)); ZipEntry ze = new ZipEntry(fileName); byte[] data = baos.toByteArray(); ze.setSize(data.length); zos.putNextEntry(ze); zos.write(data); zos.flush(); zos.closeEntry(); }

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