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Locked Tables

We can use view to check locks on Tables. RAC / Cloud RDS: Tables locked more than 5 minutes SELECT s.inst_id,d.OBJECT_ID, object_name, l.SESSION_ID,s.last_call_et, l.ORACLE_USERNAME, l.LOCKED_MODE from    gv$locked_object l, dba_objects d, gv$session s where   d.OBJECT_ID=l.OBJECT_ID and s.sid=l.SESSION_ID and s.last_call_et > 300 ; NON-RAC / Cloud RDS: Tables locked more than 5 minutes SELECT d.OBJECT_ID, object_name, l.SESSION_ID,s.last_call_et, l.ORACLE_USERNAME, l.LOCKED_MODE from    v$locked_object l, dba_objects d, v$session s where   d.OBJECT_ID=l.OBJECT_ID and s.sid=l.SESSION_ID and s.last_call_et > 300 ;
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Goldengate 19c Installation with issue resolution

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OEM queries

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Oracle 11g Physical Standy Setup

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Oracle 12c 2-node RAC setup in VMware Player 15 -- Part01

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Oracle to Postgres

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General Queries

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Execution_Explain Plan

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Oracle 11.2.0.4 to 19c DB Upgrade

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Active Session History Analysis

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ASH  analysis is important for  Oracle DBA on Daily issues or P1/P2 issues time. Below some of the main events we general look to figure out issue. RAC / Cloud RDS: 1. 2. 3. 4. 5. 6. 7. 8. 9. 10. 11. 12. 13. Redo Generation: 14. 15. 16. 17. 18. 19.
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