Lock in Dual table.

Hi,
I am getting below issue in my production system.
Its showing lock for below query.
SELECT SYSDATE FROM DUAL
Can some one help me to understand how this query can generate lock ?
Thanks,

KriC wrote:
Its showing lock for below query.Define "it". Is "it" a query that you're running? A tool? Something else? If this is a query, post the query. If this is coming from a tool, tell us what tool and what, exactly, it is saying.
What does "showing lock" mean? Are you saying that this query has acquired a lock that is blocking some other session? Or that some other session has acquired a lock that is blocking this query?
SELECT SYSDATE FROM DUAL
Can some one help me to understand how this query can generate lock ?I'm willing to wager that it has nothing to do with any locks. My wager is that you have a query (or a tool) that is telling you that session A holds a lock that session B is blocked waiting on and that session A is currently running (or the last query session A ran) was this SELECT statement. If that's the case, the SELECT statement has nothing to do with the lock that some previous SQL statement run by session A acquired.
Justin

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>
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>
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>
And the Database Concepts doc
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>
The DUAL Table
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>
And those pseudo-columns you ask about
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select sysdate,UID,rowid from dual;
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tables:vbak.
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X_VBELN = ' '
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http://help.sap.com/saphelp_nw04s/helpdata/en/cf/21eea5446011d189700000e8322d00/content.htm
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Lock objects:
http://www.sap-img.com/abap/type-and-uses-of-lock-objects-in-sap.htm
http://help.sap.com/saphelp_nw04s/helpdata/en/cf/21eea5446011d189700000e8322d00/content.htm
Match Code Objects:
http://help.sap.com/saphelp_nw2004s/helpdata/en/41/f6b237fec48c67e10000009b38f8cf/content.htm
http://searchsap.techtarget.com/tip/0,289483,sid21_gci553386,00.html
See this link:
http://www.sap-img.com/abap/type-and-uses-of-lock-objects-in-sap.htm
Check these links -
lock objects
Lock Objects
Lock Objects
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Lock in Dual table.

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