Tip

Extracting the DDL from a .dmp file

In order to extract the DDL from a .dmp file, we normally use the INDEXFILE clause during import:

imp system/passwd@cntstring 
FILE=test.dmp 
INDEXFILE=scrip.txt
log=test.log

Instead of using the long import syntax you can try a text search on the .dmp file as follows. This is faster and simpler. It has been tested on Oracle 9i and 8i. 

$fgrep 'CREATE'  test.dmp

Output 
------
CREATE TABLE "CDATA" ("CFID" CHAR(20), "APP" CHAR(64), "DATA" LONG)  PCTFREE
10 PCTUSED 40 INITRANS 1 MAXTRANS 255 STORAGE(INITIAL 65536 FREELISTS 1
FREELIST GROUPS 1) TABLESPACE "CLIENT" NOLOGGING NOCOMPRESS
CREATE UNIQUE INDEX "ID1" ON "CDATA" ("CFID" , "APP" )  PCTFREE 10 INITRANS
2 MAXTRANS 255 STORAGE(INITIAL 65536 FREELISTS 1 FREELIST GROUPS 1)
TABLESPACE "CLIENT" LOGGING
CREATE TABLE "CGLOBAL" ("CFID" CHAR(20), "DATA" LONG, "LVISIT" DATE)
PCTFREE 10 PCTUSED 40 INITRANS 1 MAXTRANS 255 STORAGE(INITIAL 65536
FREELISTS 1 FREELIST GROUPS 1) TABLESPACE "CLIENT" NOLOGGING NOCOMPRESS
CREATE INDEX "ID2" ON "CGLOBAL" ("CFID" )  PCTFREE 10 INITRANS 2 MAXTRANS
255 STORAGE(INITIAL 65536 FREELISTS 1 FREELIST GROUPS 1) TABLESPACE "CLIENT"
LOGGING
CREATE INDEX "ID3" ON "CGLOBAL" ("LVISIT" )  PCTFREE 10 INITRANS 2 MAXTRANS
255 STORAGE(INITIAL 65536 FREELISTS 1 FREELIST GROUPS 1) TABLESPACE "CLIENT"
LOGGING

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This was first published in October 2002

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