Network link in expdp

The export operation is performed with data that is consistent up to the specified SCN. If the NETWORK_LINK parameter is specified, then the SCN refers to the SCN of the source database. Follow following steps to the export database using network-link. Source database: demo Target database: uat Database platform : 11.2.0.4.0 Step 1 : Create a tnsnames.ora […]

Read More

ESTIMATE in Oracle Expdp

The value for parameter ESTIMATE  is either BLOCKS (default) or STATISTICS. BLOCKS: The estimated space used is calculated by multiplying the number of database blocks used by the target objects with the appropriate block sizes. It is  the least accurate because of: The table was created with a much bigger initial extent size than was needed for […]

Read More

ESTIMATE_ONLY in Oracle Expdp

This parameter is useful when you wanted get the approximate size of the dump file. Suppose you have only limited space available in the disk and if you wanted to check whether your dump will be fit into the available space then you can use this parameter to check or estimate the size of the […]

Read More

Export backup with date and time

Data Pump Export (hereinafter referred to as Export for ease of reading) is a utility for unloading data and metadata into a set of operating system files called a dump file set. The dump file set can be imported only by the Data Pump Import utility. The dump file set can be imported on the […]

Read More

ORA-39127: unexpected error from call to “EXFSYS”.”DBMS_EXPFIL_DEPASEXP” during datapump export

Scenario: A full database export using both conventional export utility and datapump has so many errors and warnings in their log file. Conventional Export log EXP-00008: ORACLE error 6550 encountered ORA-06550: line 1, column 14: PLS-00201: identifier ‘EXFSYS.DBMS_EXPFIL_DEPASEXP’ must be declared ORA-06550: line 1, column 7: PL/SQL: Statement ignored EXP-00083: The previous problem occurred when […]

Read More

Oracle Import(parameters)

In this article, we are going to learn about the parameters of Import Oracle Datapump. Parameter Description abort_step undocumented feature access_method data access method : default is automatic attach attach to existing job : default is no cluster start workers across cluster: default is y content content to import : default is ALL data_options Import data […]

Read More

Oracle Export(parameters)

11g Oracle database’s Export parameters In this article, we are going to learn about the parameters of Export Oracle Datapump.  Parameter  Explanation  abort_step  Undocumented feature  access_method  Data access method – default is automatic  attach  Attach to exiting job -default is no  cluster  Start work across cluster- default is yes  compression  Content to export, default is metadata […]

Read More

Oracle and it’s different Versions

Oracle Database Technology – the Oracle  server versioning  Oracle Version 2 – first commercial RDBMS Oracle Version 3 – rewritten in the  C programming language Oracle Version 4 – improved query performance Oracle Version 5 – added a networking stack for client-server computing Oracle Version 6 – OLTP improvements, Oracle parallel server Oracle Version 7 – first “Modern” Oracle New security model […]

Read More

Logical Backup

What is a logical backup? Logical backups are backups in which the export utility (for example Exp) uses SQL to read database data and then export it into a binary file at the operating system level. You can then import the data back into a database using the import utility (Imp).The Oracle Export Utility can […]

Read More