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Expdp With Transportable Tablespace Is Very Slow Compared To Exp (Doc ID 1225863.1)

Last updated on FEBRUARY 18, 2019

Applies to:

Oracle Database - Enterprise Edition - Version 10.2.0.4 to 11.2.0.2 [Release 10.2 to 11.2]
Oracle Database Exadata Cloud Machine - Version N/A and later
Oracle Cloud Infrastructure - Database Service - Version N/A and later
Oracle Database Exadata Express Cloud Service - Version N/A and later
Oracle Database Cloud Exadata Service - Version N/A and later
Information in this document applies to any platform.

Symptoms

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With more objects in exporting tablespaces, expdp with transportable tablespace option is taking more time compared to normal exp.

The expdp is taking more time at checkPluggable stage as seen from the trace file.

==============================================================================
SELECT obj1_owner,obj1_name,obj1_subname,obj1_type,ts1_name,obj2_owner,
obj2_name,obj2_subname,obj2_type,ts2_name,constraint_name,mesg_id
FROM
pluggable_set_check WHERE ((ts1_name NOT IN (select tbs from
sys.transts_tmp$)) AND (ts2_name IN (select tbs from sys.transts_tmp$))) OR
((ts2_name = '-1') AND (ts1_name IN (select tbs from sys.transts_tmp$))) OR
((ts1_name IN (select tbs from sys.transts_tmp$)) AND (ts2_name NOT IN
(select tbs from sys.transts_tmp$)) AND (mesg_id = 4))
.
.
call count cpu elapsed disk query current rows
------- ------ -------- ---------- ---------- ---------- ---------- ----------
Parse 1 0.12 0.13 0 0 0 0
Execute 1 0.00 0.00 0 0 0 0
Fetch 1 6037.43 5967.02 16700 4077586029 0 0
------- ------ -------- ---------- ---------- ---------- ---------- ----------
total 3 6037.55 5967.15 16700 4077586029 0 0
.
Misses in library cache during parse: 1
Optimizer mode: RULE
Parsing user id: SYS (recursive depth: 3)
Number of plan statistics captured: 1
======================================================

Changes

Database was upgraded from 9i to 10.2.0.4.  Started using expdp for tansportable tablespace instead of normal exp.

Cause

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In this Document
Symptoms
Changes
Cause
Solution
References

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