Error: UNABLE_TO_LOCK_ROW, unable to obtain exclusive access to this record
100144
UNABLE_TO_LOCK_ROW error while running all apex test classes
110903
What to do when I want to improve a locked post?
109442
How to deal with cross-thread access exceptions?
147064
ORA-01031: insufficient privileges when selecting view
85308
What does the error "Ambiguous column name 'id'" mean?
34058
How to debug the mysterious "duplicate value found:  duplicates value on record with id: " error
131864
Member '' cannot be accessed with an instance reference
139199
Postfix Failed to start : unable to set exclusive lock: Resource temporarily unavailable
68103
Failed to enable constraints. One or more rows contain values violating non-null, unique, or foreign-key constraints
133175
error: SELF_REFERENCE_FROM_TRIGGER while updating child records
79696
SObject row was retrieved via SOQL without querying the requested field on Contact.Account
59387
error altering table, adding constraint foreign key getting error "Cannot add or update a child row"
78999
MySQL- Unable to jump to row 0 on MySQL result index
76663
Why do votes get locked?
125715
Error: The ISCHANGED function cannot reference the RecordType.Name field
115768
Loader lock error
107075
How to check if a record is locked or not in Apex during an approval process