Programming

[FONT=Corbel]Dear Team 
[/FONT][FONT=Corbel]I am using DB2 v10 z/os database . Need expert guidance to figure out best way to track table activities ( Ex Delete, Insert,Update ) 
[/FONT][B][FONT=Corbel]Scenario [/FONT][/B][FONT=Corbel]
[/FONT][FONT=Corbel]We have a table which is critical and many developer/testing team access on daily basis . We had instance where some deleted entire table . Since its test environment - the privileges are given as expected. [/FONT][FONT=Corbel]
[/FONT][B][FONT=Corbel]Expectations[/FONT][/B][FONT=Corbel]: Is there a way to capture/track at user level ? Can we track which user deleted this table or updated/inserted etc. 
[/FONT][B][FONT=Corbel]What I Tried[/FONT][/B][FONT=Corbel] : Trigger was my first thought . Second was temporal tables ( Not explored) 
[/FONT][FONT=Corbel]I created a trigger with table that captures insert records with below example . I am able to figure out whenever insert/update/delete happens . however I am unable to capture which user did this . How can be track this ? Can we use SYSIBM.SYSTABAUTH ( Grantee column has user name ) But how can this be mapped 
Example of insert logic[/FONT][FONT=Corbel]

CREATE TRIGGER TEST_SAMPLE_INSERT
AFTER INSERT ON TEST_SAMPLE
REFERENCING NEW AS N
FOR EACH ROW
BEGIN ATOMIC
INSERT INTO X_TEST_SAMPLE ( action_timestamp,action_type,before_or_after, Other attributes of table )
Values (current timestamp,'I','A',Other attributes of table )
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[/FONT][FONT=Corbel]Any help appreciated . Would love to learn new ways to capture this at user level[/FONT]