ORA-21520: database server driver not installed

Cause : sUrea ttmetpdet ocaecssa d tabasa eesvrret rhuohga nboejtcm-do eCO Ineivormnne tub tht eenecssra yrdviref ros puoptrni gushca ccse sott ehd tabasa eesvrrei son tnitslael drol niek dni.

Action - How to fix it : DBA Scripts :: www.high-oracle.com/scripts

hCce kfit ehd irev rocrrseopdnni gott ehd tabasa eesvrreh sab ee nnitslael/dilkndei nna dneeter dnit ehs reev rrdviret bael.

update : 20-09-2017
ORA-21520

ORA-21520 - database server driver not installed
ORA-21520 - database server driver not installed

  • ora-06737 : TLI Driver: connection failed
  • ora-38432 : EVALUATE operator only allowed on an expression column
  • ora-13218 : max number of supported index tables reached for [string] index
  • ora-13866 : Client identifier must be specified
  • ora-29844 : duplicate operator name specified
  • ora-12229 : TNS:Interchange has no more free connections
  • ora-16644 : apply instance not available
  • ora-01764 : new update value of join is not guaranteed to be unique
  • ora-12552 : TNS:operation was interrupted
  • ora-22345 : recompile type string.string before attempting this operation
  • ora-02781 : Invalid value given for the timing wanted flag
  • ora-14621 : cannot add subpartition when DEFAULT subpartition exists
  • ora-01161 : database name string in file header does not match given name of string
  • ora-38450 : error computing a stored attribute for the expression set.
  • ora-32814 : propagation schedule string does not exist
  • ora-22292 : Cannot open a LOB in read-write mode without a transaction
  • ora-01028 : internal two task error
  • ora-29896 : Length of PARAMETER string longer than string characters
  • ora-25187 : specified exceptions table form incorrect
  • ora-30500 : database open triggers and server error triggers cannot have BEFORE type
  • ora-01502 : index 'string.string' or partition of such index is in unusable state
  • ora-25176 : storage specification not permitted for primary key
  • ora-28505 : cannot get non-Oracle system capabilities from string
  • ora-12995 : no columns in partially dropped state
  • ora-31479 : could not create LogMiner session
  • ora-03236 : max # extents (string) reached in index string.string subpartition string
  • ora-22061 : invalid format text [string]
  • ora-26714 : User error encountered while applying
  • ora-10568 : Failed to allocate recovery state object: out of SGA memory
  • ora-12217 : TNS:could not contact PREFERRED_CMANAGERS in TNSNAV.ORA
  • Oracle Database Error Messages



    Oracle Database High Availability Any organization evaluating a database solution for enterprise data must also evaluate the High Availability (HA) capabilities of the database. Data is one of the most critical business assets of an organization. If this data is not available and/or not protected, companies may stand to lose millions of dollars in business downtime as well as negative publicity. Building a highly available data infrastructure is critical to the success of all organizations in today's fast moving economy.

    Well, the reason for above error is that i have taken the above script from a 11g database and running it on 10g database. 11g has bring some changes in password management. Below code is executed on 11g and user created successfully, which is expected result.