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20 Pre Upgrade Checklist for Migrating Oracle Database to New version

Taking appropriate steps prior to major oracle database upgrades helps to prevent any warning , slowness during or after migration to new or...

Most Popular

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    Error: ORA-12545: Connect failed because target host or object does not exist Background: ORA-12545 is a generic error as a result o...
  • ORA-39126: Worker unexpected fatal error in KUPW$WORKER.PUT_DDLS
    Error: ORA-39126: Worker unexpected fatal error in KUPW$WORKER.PUT_DDLS [PROCACT_SCHEMA   ORA-06502: PL/SQL: numeric or value error LPX...
  • What is Oracle Database ?
    An Oracle Database is a Relational Database management System used to store & retrieve the related information. An Oracle Databa...
  • Improving FTS oracle
    This blog is written after resolving sev1 performance issue post DB migration to new setup Issue: Sql Full table Scan (FTS) Slowness...
  • ORA-02049: timeout: distributed transaction waiting for lock
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  • ORA-01157 ORA-01110 ORA-27037 ASM file Addition Issues
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    Errors:   From: $GRID_HOME/log/<hostname>/alert<<hostname>>.log [ohasd(13154)]CRS-2112:The OLR service...
  • ORA-14402: updating partition key column would cause a partition change
    Error: ORA-14402: updating partition key column would cause a partition change Analysi s: Created a Sample test t able to check if a ...
  • ORA-15063: ASM discovered an insufficient number of disks for diskgroup
    Error: ERROR: diskgroup DG02 was not mounted ORA-15032: not all alterations performed ORA-15017: diskgroup "DG02" cannot be m...
  • ORA-01156: recovery or flashback in progress may need access to files
    Error: ORA-01156: recovery or flashback in progress may need access to files When: While adding standby redo log files in standby dat...

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  • ORA-12545: Connect failed because target host or object does not exist
    Error: ORA-12545: Connect failed because target host or object does not exist Background: ORA-12545 is a generic error as a result o...
  • sqlplus: error while loading shared libraries: libclntshcore.so.12.1: cannot open shared object file: No such file or directory
    1 2 3 » Error: Post Client installation receiving error as  [oracle@testlaba ~]$ sqlplus "/ as sysdba" sq...
  • ORA-01086: savepoint never established in this session or is invalid
    SAVEPOINT is transaction control language in SQL , PL/SQL used to manage transaction consistent state within a complex coding during tra...
  • too many parse errors error=12872 ORA-12842 Cursor Invalidated During Parallel Execution
    Issue: Sql job getting stucked on sql id 21j18k2raxgpc when a package is executed in Oracle 12c database .. Alert log errors .. WARNING: too...
  • ORA-04023: Object could not be validated or authorized
    ORA- Error: SQL>SELECT DAT.*,DATE_MODE||';'||SYS_META_KEY MIS_XDISPARE FROM MIS_SYS_DATA DAT WHERE 1 = 0  ORA-04023: Object could...

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