WD Passport not mounted and not seen in Disk Utility, but something seen in Terminal

Hi,
I have a WD 1TB Passport external hard drive. THe light comes on and the disc spins, but I can't see the hard drive in disk utilitiy or anywhere else. I know that it connects. I saw a post about using terminal to mount using code, but it never found the drive. I opened Console and removed and then plugged in teh drive again and what it says is the following:
kernel:USBMSC identifier (non-unique): 0F06CB9C0F06CCCA 0x1058 0x0 0x1015, 3
I have no idea what this means. Please help me try to find my external drive again.
Thank you.

If you have another non WD enclosuer, swap into that one and see if it is now detected in Disk Utility.
Contact WD technical support for assistance.
Ciao.

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Message was edited by: Francine Schwieder

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Not in and Not Exists

Hi everyone,
I need some explanation on why the index is not being used in one of my queries.
Here are the queries:
SELECT COUNT (1)
FROM (SELECT hdr.ALLOC_HDR_SEQ_NBR hdrnbr
FROM sm_vda_allocation_header hdr
INNER JOIN
sm_vda_type vdatype
ON hdr.vda_typ_cd = vdatype.vda_typ_cd
WHERE
vdatype.SAP_POST_TYP_CD = 'JE'
AND vdatype.vda_alloc_flg = 'Y'
AND hdr.vda_liab_flg IS NULL
AND hdr.sap_extrct_dt IS NULL
AND hdr.ALLOC_HDR_SEQ_NBR NOT IN
(SELECT alloc_hdr_seq_nbr
FROM sm_vda_allocation_detail));
return 0 rows.
explain plan::
Plan
SELECT STATEMENT CHOOSECost: 671 Bytes: 26 Cardinality: 1
     8 SORT AGGREGATE Bytes: 26 Cardinality: 1
          7 HASH JOIN Cost: 671 Bytes: 293,254 Cardinality: 11,279
               1 TABLE ACCESS FULL SM_APPL.SM_VDA_TYPE Cost: 5 Bytes: 56 Cardinality: 7
               6 MERGE JOIN ANTI Cost: 665 Bytes: 281,106 Cardinality: 15,617
                    3 TABLE ACCESS BY INDEX ROWID SM_APPL.SM_VDA_ALLOCATION_HEADER Cost: 496 Bytes: 241,860 Cardinality: 20,155
                         2 INDEX FULL SCAN UNIQUE SM_APPL.SM_VDA_ALLOCATION_HEADER_PK Cost: 438 Cardinality: 20,450
                    5 SORT UNIQUE Cost: 169 Bytes: 417,480 Cardinality: 69,580
                         4 INDEX FAST FULL SCAN NON-UNIQUE SM_APPL.SM_VDA_ALLOCATION_DETAIL_FK_I Cost: 86 Bytes: 417,480 Cardinality: 69,580
2nd query::
SELECT COUNT (1)
FROM (SELECT hdr.ALLOC_HDR_SEQ_NBR hdrnbr
FROM sm_vda_allocation_header hdr
INNER JOIN
sm_vda_type vdatype
ON hdr.vda_typ_cd = vdatype.vda_typ_cd
WHERE
vdatype.SAP_POST_TYP_CD = 'JE'
AND vdatype.vda_alloc_flg = 'Y'
AND hdr.vda_liab_flg IS NULL
AND hdr.sap_extrct_dt IS NULL
AND NOT exists
(SELECT 1
FROM sm_vda_allocation_detail b where
hdr.ALLOC_HDR_SEQ_NBR = b.ALLOC_HDR_SEQ_NBR));
explain plan:::
Plan
SELECT STATEMENT CHOOSECost: 831 Bytes: 20 Cardinality: 1
     6 SORT AGGREGATE Bytes: 20 Cardinality: 1
          5 FILTER
               3 HASH JOIN Cost: 828 Bytes: 14,560 Cardinality: 728
                    1 TABLE ACCESS FULL SM_APPL.SM_VDA_TYPE Cost: 5 Bytes: 56 Cardinality: 7
                    2 TABLE ACCESS FULL SM_APPL.SM_VDA_ALLOCATION_HEADER Cost: 822 Bytes: 12,096 Cardinality: 1,008
               4 INDEX RANGE SCAN NON-UNIQUE SM_APPL.SM_VDA_ALLOCATION_DETAIL_FK_I Cost: 3 Bytes: 90 Cardinality: 15
In the 2nd query with NOT EXISTS, I see FULL table scan for SM_APPL.SM_VDA_ALLOCATION_HEADER
In the first query, the index is used in the same place:
2 INDEX FULL SCAN UNIQUE SM_APPL.SM_VDA_ALLOCATION_HEADER_PK Cost: 438 Cardinality: 20,450
ALLOC_HDR_SEQ_NBR is a primary key column.
Actually NOT IN and NOT EXISTS both used index for the second inner table (SM_APPL.SM_VDA_ALLOCATION_DETAIL).
But NOT exists is not using the index for the first table but not in is using.
how come.

872605 wrote:
Hi everyone,
I need some explanation on why the index is not being used in one of my queries.
Here are the queries:
SELECT COUNT (1)
FROM (SELECT hdr.ALLOC_HDR_SEQ_NBR hdrnbr
FROM sm_vda_allocation_header hdr
INNER JOIN
sm_vda_type vdatype
ON hdr.vda_typ_cd = vdatype.vda_typ_cd
WHERE
vdatype.SAP_POST_TYP_CD = 'JE'
AND vdatype.vda_alloc_flg = 'Y'
AND hdr.vda_liab_flg IS NULL
AND hdr.sap_extrct_dt IS NULL
AND hdr.ALLOC_HDR_SEQ_NBR NOT IN
(SELECT alloc_hdr_seq_nbr
FROM sm_vda_allocation_detail));
return 0 rows.
explain plan::
Plan
SELECT STATEMENT CHOOSECost: 671 Bytes: 26 Cardinality: 1
     8 SORT AGGREGATE Bytes: 26 Cardinality: 1
          7 HASH JOIN Cost: 671 Bytes: 293,254 Cardinality: 11,279
               1 TABLE ACCESS FULL SM_APPL.SM_VDA_TYPE Cost: 5 Bytes: 56 Cardinality: 7
               6 MERGE JOIN ANTI Cost: 665 Bytes: 281,106 Cardinality: 15,617
                    3 TABLE ACCESS BY INDEX ROWID SM_APPL.SM_VDA_ALLOCATION_HEADER Cost: 496 Bytes: 241,860 Cardinality: 20,155
                         2 INDEX FULL SCAN UNIQUE SM_APPL.SM_VDA_ALLOCATION_HEADER_PK Cost: 438 Cardinality: 20,450
                    5 SORT UNIQUE Cost: 169 Bytes: 417,480 Cardinality: 69,580
                         4 INDEX FAST FULL SCAN NON-UNIQUE SM_APPL.SM_VDA_ALLOCATION_DETAIL_FK_I Cost: 86 Bytes: 417,480 Cardinality: 69,580
2nd query::
SELECT COUNT (1)
FROM (SELECT hdr.ALLOC_HDR_SEQ_NBR hdrnbr
FROM sm_vda_allocation_header hdr
INNER JOIN
sm_vda_type vdatype
ON hdr.vda_typ_cd = vdatype.vda_typ_cd
WHERE
vdatype.SAP_POST_TYP_CD = 'JE'
AND vdatype.vda_alloc_flg = 'Y'
AND hdr.vda_liab_flg IS NULL
AND hdr.sap_extrct_dt IS NULL
AND NOT exists
(SELECT 1
FROM sm_vda_allocation_detail b where
hdr.ALLOC_HDR_SEQ_NBR = b.ALLOC_HDR_SEQ_NBR));
explain plan:::
Plan
SELECT STATEMENT CHOOSECost: 831 Bytes: 20 Cardinality: 1
     6 SORT AGGREGATE Bytes: 20 Cardinality: 1
          5 FILTER
               3 HASH JOIN Cost: 828 Bytes: 14,560 Cardinality: 728
                    1 TABLE ACCESS FULL SM_APPL.SM_VDA_TYPE Cost: 5 Bytes: 56 Cardinality: 7
                    2 TABLE ACCESS FULL SM_APPL.SM_VDA_ALLOCATION_HEADER Cost: 822 Bytes: 12,096 Cardinality: 1,008
               4 INDEX RANGE SCAN NON-UNIQUE SM_APPL.SM_VDA_ALLOCATION_DETAIL_FK_I Cost: 3 Bytes: 90 Cardinality: 15
In the 2nd query with NOT EXISTS, I see FULL table scan for SM_APPL.SM_VDA_ALLOCATION_HEADER
In the first query, the index is used in the same place:
2 INDEX FULL SCAN UNIQUE SM_APPL.SM_VDA_ALLOCATION_HEADER_PK Cost: 438 Cardinality: 20,450
ALLOC_HDR_SEQ_NBR is a primary key column.
Actually NOT IN and NOT EXISTS both used index for the second inner table (SM_APPL.SM_VDA_ALLOCATION_DETAIL).
But NOT exists is not using the index for the first table but not in is using.
how come.WHY MY INDEX IS NOT BEING USED
http://communities.bmc.com/communities/docs/DOC-10031
http://searchoracle.techtarget.com/tip/Why-isn-t-my-index-getting-used
http://www.orafaq.com/tuningguide/not%20using%20index.html

WD Passport not mounted and not seen in Disk Utility, but something seen in Terminal

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