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Databse & Technology 2 _ Shan Nawaz _ Oracle 11g Top 10 features - not your usual Top 10.pdf

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  • 1. Oracle11g  Top  10  features   Not  your  usual  Top  10.   Shan  Nawaz   Verisign  Inc   The most comprehensive Oracle applications & technology content under one roof
  • 2. WHO  AM  I    •  Shan  Nawaz   –  More  than  13  years  of  experience  in  Database  Technologies(Oracle,  DB2,  SQL   Server)  •  Database  Engineer  at  Verisign   –  Tune  mission  criJcal  applicaJons  with  millisecond  SLA’s  •  Industry  CerJficaJons   –  OCP  in  Oracle7.3/8/9i/10g/11g   –  IBM  CerJfied  User  specialist  in  DB2   –  MCP  in  SQL  Server  2000  •  Recent/Future  Technical  Sessions   –  Oracle  Open  World  2011   –  Hotsos  2011   –  IOUG  2011   –  Oracle  Open  World  2010   –  Verisign  Technical  Symposium    2009   The most comprehensive Oracle applications & technology content under one roof
  • 3. Agenda  •  About  Verisign  and  Our  SLA’s  •  Not    your  usual  Top  10  features  •  QA  •  References   The most comprehensive Oracle applications & technology content under one roof
  • 4. Our  SLA’s  •  TransacJons  made  of  complex  SQL   statements   Command   SLA   CHECK  DOMAIN   25ms   ADD  DOMAIN   50ms   DELETE  DOMAIN   100ms   MODIFY  DOMAIN   100ms   The most comprehensive Oracle applications & technology content under one roof
  • 5. Goal/MoJvaJon  of  this  PresentaJon  •  To  visit  Australia  •  To  talk  about  the  very  good   features  of  Oracle11g  that  are   overlooked  by  the   very  best   features  of  Oracle  11g   The most comprehensive Oracle applications & technology content under one roof
  • 6. Very  Best  Features  1.  Database  Replay  2.  AdapGve  Cursor  Sharing  3.  Flashback  Data  Archive/Total  Recall  4.  EdiGon  Based  redefiniGon  5.  Deferred  segment  creaGon    6.  Password  Enhancements  7.  SQL  Plan  Management  8.  Result  Cache  9.  Virtual  Indexes/Columns  10.  Interval/System  ParGGoning    11.  Extended  OpGmizer  StaGsGcs  12.  Online  Patching  13.  Recursive  With  clause  14.  PL/SQL  NaGve  CompilaGon  15.  Secure  Files   The most comprehensive Oracle applications & technology content under one roof
  • 7. Poor  man’s  parallelism   The most comprehensive Oracle applications & technology content under one roof
  • 8. Poor  man’s  parallelism   DBMS_PARALLEL_EXECUTE      •  Supports  parallel  update  of  large  data  sets  in   smaller  chunks.  •  Chunks    are  created  by  segregaJng  the  data   based  on     1.  Rowid       2.  Numeric  column     3.  User-­‐defined  SQL.       The most comprehensive Oracle applications & technology content under one roof
  • 9. Poor  man’s  parallelism  •  Why  is  DBMS_PARALLEL_EXECUTE   important  ?   –  Unlike  other  parallel  features  ,   DBMS_PARALLEL_EXECUTE    does  not  require   Enterprise  EdiJon.   –  Eliminates  much  of  manual  coding  and  does   befer    job  of  distribuJng  load    uniformly  across   parallel  processes   –  Overcome  restricJons  of  parallel  DML       The most comprehensive Oracle applications & technology content under one roof
  • 10. Poor  man’s  parallelism  •  Why  is  DBMS_PARALLEL_EXECUTE  important  ?   (ConJnued)   –  Break  large  single  transacJon  into  mulJple  chunks   (transacJons)   •  Less  impact  to  dependent  systems  like  Golden  Gate  or   streams   •  Less  undo  space  required    minimizing  the  chance  of   ORA-­‐1555   •  DuraJon  of  lock  is  reduced.   –  Restart    failed  chunks  (transacJons)  since  Chunks  are   commifed  individually  (Implicit)   •  Impact  of  Rollback  due  to  error  is  not  severe.   The most comprehensive Oracle applications & technology content under one roof
  • 11. Poor  man’s  parallelism   DBMS_PARALLEL_EXECUTE      •  How  to  implement?  1.  Create  a  task  with  CREATE_TASK  procedure  2.  Create  chunks  (size)  using  one  of  the  following.     –  CREATE_CHUNKS_BY_ROWID   –  CREATE_CHUNKS_BY_NUMBER_COL     –  CREATE_CHUNKS_BY_SQL    3.  Define  the  DML  statement  4.  Execute  the  task  in  parallel  with  RUN_TASK  5.  Perform  error  handling  and  run  failed  chunks  with   RESUME_TASK.   The most comprehensive Oracle applications & technology content under one roof
  • 12. Poor  man’s  parallelism  Create  a  task  with  CREATE_TASK    BEGIN      DBMS_PARALLEL_EXECUTE.CREATE_TASK  (TASK_NAME  =>  UPDATE_TASK);      END;  Create  chunks  with  ROWID.      BEGIN      DBMS_PARALLEL_EXECUTE.CREATE_CHUNKS_BY_ROWID(TASK_NAME    =>  UPDATE_TASK‘,  TABLE_OWNER     =>  SCOTT‘,  TABLE_NAME  =>  CONTENT‘,  BY_ROW=>    FALSE,  CHUNK_SIZE    =>    3075);  END;  Define  the  Update  statement  and  running  the  task    DECLARE      L_SQL_STMT  VARCHAR2(32767);  BEGIN      L_SQL_STMT  :=  UPDATE  /*+  ROWID  (DDA)  */    CONTENT  SET        EXPIRATION_DATE=  SYSDATE+14                                    WHERE  ROWID  BETWEEN  :START_ID  AND  :END_ID;      DBMS_PARALLEL_EXECUTE.RUN_TASK(TASK_NAME  =>  UPDATE_TASK‘,SQL_STMT=>  L_SQL_STMT,LANGUAGE_FLAG      =>  DBMS_SQL.NATIVE,PARALLEL_LEVEL=>  4);      END;   The most comprehensive Oracle applications & technology content under one roof
  • 13. Compare  and  Converge   The most comprehensive Oracle applications & technology content under one roof
  • 14. Compare  and  Converge   DBMS_COMPARISON    •  IdenJfy  differences  between  data  sets    across   databases  or  same  database.  •  Report  and  Synchronize  the  data  set     –  Either  the  source  or  target    can  act  as  master.  •  Intended  mainly  for  replicated/streams  environment   but  can  be  used  outside  of  streams  environment  •  Works  with  10g  and  above  version  provided  one  the   databases  in  the  comparison  is  11g;     The most comprehensive Oracle applications & technology content under one roof
  • 15. Compare  and  Converge  •  Comparison  Modes  Supported   1.  Full  Object  comparison   •  CMP_SCAN_MODE_FULL   2.  Random  data  comparison   •  CMP_SCAN_MODE_RANDOM   3.  Cyclic  Comparison   •  CMP_SCAN_MODE_CYCLIC     4.  Customized  comparison   •  CMP_SCAN_MODE_CUSTOM     The most comprehensive Oracle applications & technology content under one roof
  • 16. Compare  and  Converge  •  Objects  currently  supported  are   –  Tables   –  Single  Table  Views   –  Materialize  Views   –  Synonyms  for  above  objects  •  Unique  Indexes    are  used  for  comparison   –  Non-­‐Unique  indexes  are  used  if  specified  manually  •  Permits  comparing  row-­‐row  OR  group  of  rows   –  Befer  performance  with  group  of  rows   The most comprehensive Oracle applications & technology content under one roof
  • 17. Compare  and  Converge  •  Steps   1.  Create  comparison  object   2.  Perform  the  comparison   3.  Analyze  the  results   4.  Converge  the  data   The most comprehensive Oracle applications & technology content under one roof
  • 18. Compare  and  Converge  SQL>  SELECT  COUNT(*)  FROM   SQL>  SELECT  COUNT(*)  FROM   CONTENT_1;   CONTENT_2;          COUNT(*)      COUNT(*)  -­‐-­‐-­‐-­‐-­‐-­‐-­‐-­‐-­‐-­‐   -­‐-­‐-­‐-­‐-­‐-­‐-­‐-­‐-­‐-­‐                  10                  10         SQL>  DELETE  FROM  CONTENT_2              2        WHERE  ITEM_ID=484380;         1  row  deleted.     SQL>  COMMIT;       The most comprehensive Oracle applications & technology content under one roof
  • 19. Compare  and  Converge   SQL>    DECLARE      2              COMPARE_VALUE   DBMS_COMPARISON.COMPARISON_TYPE;  Create  Comparison  Object      3              COMPARE_OUTPUT  BOOLEAN;  SQL>  BEGIN      4    BEGIN      2    DBMS_COMPARISON.CREATE_COMPARISON(      5              COMPARE_OUTPUT  :=      6              DBMS_COMPARISON.COMPARE  (      3    COMPARISON_NAME=>MYCOMPARE,      7              COMPARISON_NAME=>MYCOMPARE,      4    SCHEMA_NAME=>SCOTT,      8              SCAN_INFO=>COMPARE_VALUE,      5    OBJECT_NAME=>CONTENT_1,      9              PERFORM_ROW_DIF=>TRUE);      6    DBLINK_NAME=>NULL,    10              IF  COMPARE_OUTPUT=TRUE      7    REMOTE_SCHEMA_NAME=>SCOTT,    11              THEN      8    REMOTE_OBJECT_NAME=>CONTENT_2);    12                        DBMS_OUTPUT.PUT_LINE(Tables  are  IdenGcal);      9    END;    13              ELSE    10    /        14                        DBMS_OUTPUT.PUT_LINE(Tables  are  not  IdenGcal’);      15              END  IF;  PL/SQL  procedure  successfully  completed.    16*  END;    17    /   Tables  are  not  IdenJcal,  Differences  Exist     PL/SQL  procedure  successfully  completed.   The most comprehensive Oracle applications & technology content under one roof
  • 20. Reproducing  SQL  Test  Case     The most comprehensive Oracle applications & technology content under one roof
  • 21. Reproducing  SQL  Test  Cases  •  Remember  the  Jmes  you  were  unable  to  resolve     SQL  issue  •  Because   –  You  are  unable  to  reproduce  the  issue    at  will  in   producJon  environment.   –  Or  Unable  to  reproduce  the  issue  easily  in  Dev/QA   environments.  (Recurring  issue)   –  Or  Oracle  support  was  unable  to  help  you  because   they  don’t  have  the  necessary  informaJon  to     reproduce  the  issue   The most comprehensive Oracle applications & technology content under one roof
  • 22. Reproducing  SQL  Test  Cases  •  Help  is  on  the  way  •  Oracle  11g  provides  a  tool  called  SQL  Test  case   builder  or  SQL  TCB.   –  As  per  Oracle  documentaJon,  If  you  ever  need  to   contact  Oracle  Support  about  a  SQL  issue,  then   obtaining  a  reproducible  test  case  is  the  single  most   important  factor  to  ensure  a  speedy  resoluJon.    •  Provides  as  means  of  good  shared  language  for   exchanging  informaJon  with  Oracle  Support  or   DBA’s  or  developers.   –  Easy  to    diagnose  ,  analyze  and  esJmate  the  fix.  •  Back  ported  to  10.2.0.4     The most comprehensive Oracle applications & technology content under one roof
  • 23. Reproducing  SQL  Test  Cases  •  Test  case  can  be  generated      using   1.  SQL  text     2.  SQL  cursor   3.  SQL  from  incident  file  •  SQL  TCB  can  be  also  be  directly  with  ADRCI   command   –  DDE  EXECUTE  ACTION  INCIDENT  <incident_id>   ACTIONNAME  SQLTCB  INVOCATION   <invocaJon_id>   The most comprehensive Oracle applications & technology content under one roof
  • 24. Reproducing  SQL  Test  Cases  •  What  kind  of  data  is  collected?   Permanent  InformaGon   Transient  InformaGon   •  Always  captured   •  Captured  if  Oracle  thinks  it  is   •  InformaJon  like    SQL_TEXT,     necessary   disk  reads,  buffer  gets,  CPU   •  InformaJon  that  could   Jme,  elapsed  Jme,    fetches,   necessarily  change  like   ExecuJon  plan  ,  OpJmizer   dynamic  sampling,  degree  of   staJsJcs,  Bind  variables,  rows   parallelism   processed  Use  of  Outlines,  SQL   profiles  or  SPM  and  metadata   and  user  profile.   •  Data  collecJon  is  opJonal   •  No  Support  for  DDL           The most comprehensive Oracle applications & technology content under one roof
  • 25. Reproducing  SQL  Test  Cases  •  How  to  implement  STB?   1.  Create  a  directory  or  use  exisJng  directory   2.  Export    the  test  case  with   DBMS_SQLDIAG.EXPORT_SQL_TESTCASE   3.  Import  the  test  case  with   DBMS_SQLDIAG.IMPORT_SQL_TESTCASE   The most comprehensive Oracle applications & technology content under one roof
  • 26. Reproduce  SQL  Test  Cases   SQL>  DECLARE      2    MYTESTCASE  CLOB;      3    BEGIN      4    DBMS_SQLDIAG.EXPORT_SQL_TESTCASE  (      5    DIRECTORY=>DATADIR,  •  Example      6    SQL_TEXT=>SELECT  DOMAINNAME  FROM  DOMAIN     WHERE  DOMAINNAME=2703255,      7    EXPORTDATA=>  FALSE,        8    TESTCASE_NAME=>MYTEST,      9    TESTCASE=>MYTESTCASE);    10  END;    11  /   The most comprehensive Oracle applications & technology content under one roof
  • 27. SQL  Test  Case  Builder  •  Dump  directory  files  created  by  SQL  TCB.   The most comprehensive Oracle applications & technology content under one roof
  • 28. Advanced  Compression   The most comprehensive Oracle applications & technology content under one roof
  • 29. ADVANCED  COMPRESSION  •  With  huge  amounts  of  data  being  the  norm  than   excepJon  ,  compression  becomes  criJcal  in  reducing   the  foot  print  of  almost  every  component     Buffer  Cache   Network   Database     Backup  Server   The most comprehensive Oracle applications & technology content under one roof
  • 30. ADVANCED  COMPRESSION  In  11g,  there  is  compression  for  everyone  •  Storage   –  OLTP  compression  for  DML  (Structured  Data)   –  SecureFiles  Compression  (Unstructured  Data)  •  Network   –  Data  Guard  redo  Compression  •  Backup   –  RMAN  compression   –  Data  pump  compression   The most comprehensive Oracle applications & technology content under one roof
  • 31. ADVANCED  COMPRESSION   OLTP  Compression    •  New  compression  algorithm  uses  deferred                              PCTFREE                               or  batched  approach     –  Data  is  inserted  as  is  without  compression  unJl                          DATA         PCTFREE    value  is  reached.   –  Compression  of  data  starts  once  PCTFREE  threshold  is  reached  •  Can  be  enabled  at    table,  parJJon  or  tablespace  level  •  No  need  of  decompressing  the  data  while  reading  •  Recommended  for  low  update  acJvity  tables  •  Use  Compression  advisor(DBMS_COMPRESSION)  to   esJmate  savings   The most comprehensive Oracle applications & technology content under one roof
  • 32. ADVANCED  COMPRESSION   Data  guard  Compression      •  Redo  is  compressed  as  it  is  transmifed  over  a   network.  •  Helps  efficiently  uJlize  network  bandwidth  when   data  guard    is  across  data  centers  •  Faster  resynchronizaJon  of  Data  guard    during   gap  resoluJon.  •  Recommended  for  low  network  bandwidth       The most comprehensive Oracle applications & technology content under one roof
  • 33. ADVANCED  COMPRESSION   Data  guard  Compression    •  How  to  implement?   –  Specify    “COMPRESSION”  with  iniJalizaJon   parameter  LOG_ARCHIVE_DEST_n     The most comprehensive Oracle applications & technology content under one roof
  • 34. ADVANCED  COMPRESSION   RMAN  Compression    •  Supports  compression  of  backups  using  ZLIB   algorithm     –  Faster  compression  and  low  CPU  uJlizaJon   compared  to  default  BZIP2  (10g)   –  Low  compression  raJo    compared  to  BZIP2       The most comprehensive Oracle applications & technology content under one roof
  • 35. ADVANCED  COMPRESSION   RMAN  Compression  •  How  to  Implement  ?   –  Configured  with  CONFIGURE  COMPRESSION   ALGORITHM    ‘value’   •  With  Advanced  compression  ,  value  can  be  HIGH,   MEDIUM(ZLIP)  and  LOW(LZO)   •  Without  advanced  compression  ,  Only  basic  can  be   specified   –  Execute  backups  with  ‘AS  COMPRESSED   BACKUPSET’     The most comprehensive Oracle applications & technology content under one roof
  • 36. ADVANCED  COMPRESSION   Data  Pump  Compression    •  Compression  of  metadata  introduced  in  10g  •  Compression  of  data  introduced  in  11g.  •  Inline  operaJon   –  Save  on  storage  allocaJon   –  No  need  to  uncompress  before  Import     The most comprehensive Oracle applications & technology content under one roof
  • 37. ADVANCED  COMPRESSION   Data  Pump  Compression    •  How  to  implement?   –  Enabled  with  expdp  COMPRESSION  afribute   •  ALL       •  DATA_ONLY     •  METADATA_ONLY       The most comprehensive Oracle applications & technology content under one roof
  • 38. Diagnosing  and  resolving   failures   The most comprehensive Oracle applications & technology content under one roof
  • 39. Diagnosing  and  Resolving  Failures  •  Database  Recovery  advisor  (DRA)   –  Diagnosing  media  Failures   –  Present  repair  opJons    (with  script)   –  Repair  failures  (if  requested)  •  Doesn’t  mafer  if    you  are  a  newbie  DBA  or  highly   experienced  DBA   –  When  in  doubt  ,  use  DRA.  •  Now  you  can  blame  Oracle  if  the  something  goes   wrong.     –  And  keep  your  Job,  write  a  blog  ……   The most comprehensive Oracle applications & technology content under one roof
  • 40. Diagnosing  and  Resolving  Failures  •  The  three  RMAN  commands  to  support  DRA     1.  LIST  FAILURE   •  Errors  are  classified  as  Low,  High,  CriJcal     •  Historical  support    for  closed  errors.   2.  ADVISE  FAILURE   •  Specifies  the  repair  strategy   •  Supports  both  manual  and  automated  repair  opJons   3.  REPAIR  FAILURE   •  Supports  preview  mode  (spooling  the  script)   The most comprehensive Oracle applications & technology content under one roof
  • 41. MulGsecGon  Backups   The most comprehensive Oracle applications & technology content under one roof
  • 42. MulJsecJon  Backups  •  Enables  backing  up  of  single  datafile  in  parallel   using  secJons   –  SecJon  is  conJguous  range  of  blocks  in  a  datafile  •  Up  to  256  SecJons  or  channels  per  datafile  is   supported  •  MulJplexed  backups  will  not  contain  datafiles   or  secJons  from  other  datafiles.   The most comprehensive Oracle applications & technology content under one roof
  • 43. MulJsecJon  Backups  •  Benefits   –  Improved  performance  for  backup  and  restore.   •  Befer  performance  when  restoring  one    datafile   compared  to  restoring  from  large  mulJplexed  backup   set   –  Befer  restartability.   •  Restart  the  failed  secJon  backup  instead  of  datafile   The most comprehensive Oracle applications & technology content under one roof
  • 44. MulJsecJon  Backups   The most comprehensive Oracle applications & technology content under one roof
  • 45. MulJsecJon  Backups   The most comprehensive Oracle applications & technology content under one roof
  • 46. MulJsecJon  Backups   The most comprehensive Oracle applications & technology content under one roof
  • 47. DATABASE  RESIDENT  CONNECTION  POOL   The most comprehensive Oracle applications & technology content under one roof
  • 48. DATABASE  RESIDENT  CONNECTION  POOL    •  Shared  Server  or  MTS   –  Session  Resources  are  not  shared   –  Good  for  long  running  transacJons  •  Database  resident  connecJon  pool(DRCP)   –  To  support    large  number  of    similar  client   applicaJons  or  connecJons   –   Share  or  reuse  sessions.   –  TransacJons  are  very  short  in  nature   –  No  Session  affinity  is  required   The most comprehensive Oracle applications & technology content under one roof
  • 49. DATABASE  RESIDENT  CONNECTION  POOL    •  DRCP  is  mainly  intended  for  single  threaded  applicaJons   like  PHP  ,  PERL   –  Currently  available  to  clients  that  use  the  OCI  driver  with  C,  C++,   Perl  and  PHP.   –  No  support  for  JDBC  thin  or  JDBC-­‐OCI.  •  More  database  connecJons  are  supported  compared  to     shared  server  or  dedicated  server  configuraJon     –  Less    memory  foot  print   –  Behaves  more  like  dedicated  server  connecJon  once  the   connecJon  is  established.           The most comprehensive Oracle applications & technology content under one roof
  • 50. Database  Resident  ConnecGon  Pool    •  Working  of  DRCP   1.  Client  makes  a  request  for  connecJon   2.  Background  process  connecJon  broker  picks  up   appropriate  pooled  server  and  hands-­‐off  the   client  to  that  pooled  server.     3.  Once  connecJon  is  handed-­‐off,    the  client   directly  communicates  with  the  pooled  server   4.  The  pooled  server  is  handed  back  to  the  broker   when  the  client  releases  it.   The most comprehensive Oracle applications & technology content under one roof
  • 51. DATABASE  RESIDENT  CONNECTION  POOL  •  Working  of  DRCP    PGA   ConnecGon   Clients/Middle  Ger   POOLED  SERVERS    Broker       The most comprehensive Oracle applications & technology content under one roof
  • 52. DATABASE  RESIDENT  CONNECTION  POOL  •  How  to  configure?   –  Start  the  pool  with     DBMS_CONNECTION_POOL.START_POOL();     –  Add  (SERVER  =  POOLED)    to  TNS  entry     –  You  can  also  use  the  following  syntax  for  PHP     •  oci_pconnect(“userid",  “pwd",  “hostname:1526/orcl:POOLED");   –  Pool  can  be  stopped  with     DBMS_CONNECTION_POOL.STOP_POOL();   –  Pool  properJes  like  minimum  and  maximum  number  of   pooled  servers  ,    maximum  inacJvity  Jme  etc.  can  be   specified  with  DBMS_CONNECTION_POOL  .   CONFIGURE_POOL    package   The most comprehensive Oracle applications & technology content under one roof
  • 53. Server  ConsolidaGon   The most comprehensive Oracle applications & technology content under one roof
  • 54. Server  ConsolidaJon  •  Very  simple  and  effecJve  approach  to  Server   ConsolidaJon  •  Limit  the  CPU  used  by  an  Instance   –  Works  by  limiJng  the  number  of  runnable  processes  •  Administered    and  maintained  by  DBA  instead  of   SA’s  •  Supports  over-­‐provisioning  •  Will  not  help  with  licensing  if  your  server  has   more  CPU’s  (At  least  for  now,  please  check  with     Oracle)   The most comprehensive Oracle applications & technology content under one roof
  • 55. Server  ConsolidaJon  •  How  to  enable  instance  caging?   –  Enable  the  Resource  Manager.   •  ALTER  SYSTEM  SET  RESOURCE_MANAGER_PLAN  =   ‘DEFAULT_PLAN;   –  Set  the  CPU_COUNT  iniJalizaJon  parameter.     •  ALTER  SYSTEM  SET  CPU_COUNT  =  2;   The most comprehensive Oracle applications & technology content under one roof
  • 56. Server  ConsolidaJon  •  What  is  the  secret  formula?   –  CPU_COUNT/Total  number  of  acJve    instances  •  Example:  8  CPU  server  with  4  instances   –  Each  instance    is  limited  to  2  CPU(CPU_COUNT)   –  CASE-­‐1:  If  all  4  instances  are  acJve   •  Each  instance  gets  2/(4*2)  =25%  of  Total  CPU   –  CASE-­‐2:  If  2  instances  are  acJve   •  Each  instance  gets  2/(2*2)  =  50%  of  Total  CPU     The most comprehensive Oracle applications & technology content under one roof
  • 57. SQL*Plus  Error  Logging   The most comprehensive Oracle applications & technology content under one roof
  • 58. SQL*Plus  Error  Logging  •  Records  SQL,  PL/SQL  and  SQL*Plus  errors  in  an   error  table     –  Default  table  is  SPERRORLOG;     –  Created  automaJcally  if  the  table  does  not  exists  •  Captures  errors  that  are  not  SQL  too.   –  SELCT  instead  of  SELECT  •  This  is  SQL*Plus  feature  and  works  with  older   versions  of  Oracle  database   –  Only  the  clients  must  be  11g  or  above  •  Is  it  Jme  to  say  bye  bye  to  spooling,  Wait  not  yet     The most comprehensive Oracle applications & technology content under one roof
  • 59. SQL*Plus  Error  Logging  •  All  you  have  to  do  is  type  “SET  ERRORLOGGING   ON”    •  Allows  you  to  idenJfy  the  session  with  idenJfier   –   SET  ERRORLOGGING  ON    IDENTIFIER  ‘Core-­‐Release  2.3’  •  Allows  use  of  user-­‐defined  table   •  SET  ERRORLOGGING  ON    TABLE    scof.errorlog  •  Allows  truncaJng  of  tables  before  capturing   errors   –  SET  ERRORLOGGING  ON  TRUNCATE     The most comprehensive Oracle applications & technology content under one roof
  • 60. SQL*Plus  Error  Logging   The most comprehensive Oracle applications & technology content under one roof
  • 61. Preprocessor   The most comprehensive Oracle applications & technology content under one roof
  • 62. Oracle  Preprocessor  •  Provides  the  ability  to  preprocess  your  data   before  sending  to  Oracle  external  drivers   –  Reduced  disk  space  consumpJon  and  faster   processing  Jme.   –  Adds  befer  control  and    flexibility    to  external   tables   The most comprehensive Oracle applications & technology content under one roof
  • 63. Oracle  Preprocessor  •  Supports  OS  commands,    binaries  and  scripts  •  Supports  parallelism   –  File  is  granular  unit  for  parallelism.  •  Back  ported  to  10.2.0.5  •  Other  uses   –  For  SQL  lovers  ,  run  vmstat  ,  df  –k  or  sar  report  from   SQL  prompt.  •  CauJon   –  Restrict  access  to  preprocessor    directory   The most comprehensive Oracle applications & technology content under one roof
  • 64. Oracle  Preprocessor   The most comprehensive Oracle applications & technology content under one roof
  • 65. References  •  Oracle  DocumentaJon  •  Oracle  Metalink  •  asktom.oracle.com  •  OTN  ArJcles  •  hfp://opJmizermagic.blogspot.com  •  hfp://kkempf.wordpress.com  •  hfp://php.net/manual/en/oci8.connecJon.php  •  And  many  more  …..   The most comprehensive Oracle applications & technology content under one roof