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Impdp Takes Forever On Tables With Lobs (Doc ID 1590012.1)

Last updated on MARCH 01, 2019

Applies to:

Oracle Database Cloud Schema Service - Version N/A and later
Oracle Database Exadata Cloud Machine - Version N/A and later
Oracle Database Exadata Express Cloud Service - Version N/A and later
Oracle Cloud Infrastructure - Database Service - Version N/A and later
Oracle Database Backup Service - Version N/A and later
Information in this document applies to any platform.

Symptoms

Data Pump Import is running very slow while loading the data in a table with a lob column. The table has the following structure:

SQL> desc <TABLE_NAME>
Name                                     Null?    Type
---------------------------------- -------- ----------------------------
<COLUMN1>                         NOT NULL  RAW(8)
<COLUMN2>                                         NUMBER(38)
<COLUMN3>                                         NUMBER(38)
<COLUMN4>                                         RAW(8)
<COLUMN5>                                         NUMBER(38)
<COLUMN6>                                         RAW(8)
<COLUMN7>                                         VARCHAR2(32)
<COLUMN8>                                         VARCHAR2(32)
<COLUMN9>                                         VARCHAR2(254)
<COLUMN10>                                       VARCHAR2(32)
<COLUMN11>                                       NUMBER(38)
<COLUMN12>                                       VARCHAR2(32)
<COLUMN13>                                       vARCHAR2(32)
<COLUMN14>                                       CLOB
<COLUMN15>                                       RAW(8)

 
The DW trace file shows that the following statement is running :

 

Cause

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In this Document
Symptoms
Changes
Cause
Solution
References


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