- #Key lock sql server deadlock how to#
- #Key lock sql server deadlock update#
- #Key lock sql server deadlock free#
Please let me know why Oracle is throwing Deadlock errors. PRIMARY KEY (Match_term_id, Aggr_Date, Position_Num)ĪLTER TABLE Match_terms_daily ADD CONSTRAINT FK_MATCH_TERMS_D_MT_IDĪLTER TABLE Match_terms_position_daily ADD CONSTRAINT FK_MATCH_TERMS_POS_D_MT_ID Both the Child tables have INDEXED foreign keys.Some of the DDL statements for these tables are: Can you please let me know why the deadlock is coming at INSERT INTO MATCH_TERM - the parent table of both the other tables. O/S info: user: oracle, term: pts/1, ospid: 32084, machine: search3.internalĪpplication name: SQL*Plus, hash value=3669949024Įnd of information on OTHER waiting sessions. Information on the OTHER waiting sessions: Session 1057: obj - rowid = 00016C83 - AAAWyDAAIAACJnIAAA Session 1060: obj - rowid = 00016C83 - AAAWyDAAIAADlrLAAA Resource Name process session holds waits process session holds waits Information may aid in determining the deadlock: It is aĭeadlock due to user error in the design of an application
The following deadlock is not an ORACLE error. INSERT INTO MATCH_TERM VALUES (:B2 ,:B1 )Ġx9e49a5e0 37 procedure PARIS_USER.PUMP_DATA_IN_10
Isn't execute immediate 'string' works like a implicit cursor.
#Key lock sql server deadlock how to#
these are simple inserts happening all over the place.Īlso can you please tell me how to build a Dynamic SQL and get it executed with in an implicit cursor.ĪS an example we have p_date as date passed from procedure and the Ist two characters should build the external_table.Įxec PUMP_DATA_IN ('1') should have the implicit cursor work likeįor x in (Select * from MYExternal_table_10) and so on. I know the reason for DEADLOCKS as the UNINDEXED Foreign Keys but out here I am not updating any of the rows for the child table to be locked for any reasons.
Select my_sequence.nextval into return_val from dual SELECT Match_term_id INTO return_val FROM MATCH_TERM WHERE MATCH_TERM_TEXT = p_Value Insert into Match_terms_daily Values (p_Match_term_id,p_date,x.Request_Count,100,100,3) INSERT into Match_term Values (p_Match_term_id,x.Match_term_text) Select get_sequence_id(NULL) into p_Match_term_id from dual Where Match_term_text = x.Match_term_text Select Match_term_id into p_Match_term_id from Match_term Is this the right approach or would you suggest something else?Ĭreate or Replace Procedure PUMP_DATA_IN_25 (p_date DATE)įor x in (Select Match_term_text,Request_Count from myexternal_table) LOOP How would I test the performance of selecting all accounts for a give fiscal year for update, when I am only updating one or two accounts? I may have 200 - 300 accounts per fiscal year. Since different users can be updating the accounts at the same time, I want to avoid deadlocks where users are updating the accounts in different orders from each other. Users call a routine which updates the account balance for a given fiscal period (balance 1 - 12). There may be a few hundered accounts in a given fiscal year. I have a table called account_balance defined as: The reason I asked, was that in your second response above, you said that the session would have been killed and not the statement.Īre there scenarios where a session is killed in a deadlock situation and not just the statement?įinally, what is the best way to handle the following situation? So, did Oracle change their logic to only kill the offending statement (and not the entire session/transaction) allowing the session to clean itself up?
Session A waits until session B commits or rollsback data.
#Key lock sql server deadlock update#
Update test set my_data = 'testing' where pk = 6 Īfter a few seconds, I get Oracle error message above, but session B is still active and able to issue other commands. Update test set my_data = 'test1' where pk = 5 Select * from test where pk = 6 for update Select * from test where pk = 5 for update
#Key lock sql server deadlock free#
However, Session B was still active and free to either commit, rollback, or do something else. ORA-00060: deadlock detected while waiting for resource I just did a test using Oracle 8.1.7 and after a few second's in session B, Oracle returned this message:
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