Dameng database tutorial: DM8 commonly used SQL organization (query version, number of sessions, number of transactions, waiting events, memory pool)

Query database version

SELECT * FROM V$VERSION;

Query sessions

SELECT COUNT(*) FROM V$SESSIONS;

Query the number of transactions

SELECT COUNT(*) FROM V$TRX;

Query wait events

SELECT * FROM V$TRXWAIT;

Query memory pool

SELECT * FROM V$MEM_POOL;