mysql> SHOW VARIABLES LIKE 'max_connections';🆑
+-----------------+-------+
| Variable_name   | Value |
+-----------------+-------+
| max_connections | 151   |
+-----------------+-------+
1 row in set (0.00 sec)

mysql>

mysql> SET GLOBAL max_connections = 100;🆑
Query OK, 0 rows affected (0.01 sec)

mysql>

mysql> SHOW VARIABLES LIKE 'max_connections';🆑
+-----------------+-------+
| Variable_name   | Value |
+-----------------+-------+
| max_connections | 100   |
+-----------------+-------+
1 row in set (0.00 sec)

mysql>

mysql> SHOW STATUS LIKE 'Threads_connected';🆑
+-------------------+-------+
| Variable_name     | Value |
+-------------------+-------+
| Threads_connected | 86    |
+-------------------+-------+
1 row in set (0.00 sec)

mysql>

mysql> SHOW STATUS LIKE 'Threads_connected';🆑
+-------------------+-------+
| Variable_name     | Value |
+-------------------+-------+
| Threads_connected | 4     |
+-------------------+-------+
1 row in set (0.00 sec)

mysql>

mysql> SHOW ENGINE INNODB STATUS\G🆑
*************************** 1. row ***************************
  Type: InnoDB
  Name:
Status:
=====================================
260706  4:50:44 INNODB MONITOR OUTPUT
=====================================
Per second averages calculated from the last 16 seconds
----------
BACKGROUND THREAD
----------
srv_master_thread loops: 1 1_second, 1 sleeps, 0 10_second, 2 background, 2 flush
srv_master_thread log flush and writes: 1  log writes only: 5
----------
SEMAPHORES
----------
OS WAIT ARRAY INFO: reservation count 3, signal count 3
Mutex spin waits 0, rounds 0, OS waits 0
RW-shared spins 3, OS waits 3; RW-excl spins 0, OS waits 0
Spin rounds per wait: 0.00 mutex, 30.00 RW-shared, 0.00 RW-excl
------------
TRANSACTIONS
------------
Trx id counter D901
Purge done for trx's n:o < 0 undo n:o < 0
History list length 0
LIST OF TRANSACTIONS FOR EACH SESSION:
---TRANSACTION 0, not started, OS thread id 2960855040
MySQL thread id 11355, query id 1061000 localhost root
SHOW ENGINE INNODB STATUS
--------
FILE I/O
--------
I/O thread 0 state: waiting for i/o request (insert buffer thread)
I/O thread 1 state: waiting for i/o request (log thread)
I/O thread 2 state: waiting for i/o request (read thread)
I/O thread 3 state: waiting for i/o request (read thread)
I/O thread 4 state: waiting for i/o request (read thread)
I/O thread 5 state: waiting for i/o request (read thread)
I/O thread 6 state: waiting for i/o request (write thread)
I/O thread 7 state: waiting for i/o request (write thread)
I/O thread 8 state: waiting for i/o request (write thread)
I/O thread 9 state: waiting for i/o request (write thread)
Pending normal aio reads: 0, aio writes: 0,
 ibuf aio reads: 0, log i/o's: 0, sync i/o's: 0
Pending flushes (fsync) log: 0; buffer pool: 0
42 OS file reads, 7 OS file writes, 7 OS fsyncs
0.00 reads/s, 0 avg bytes/read, 0.00 writes/s, 0.00 fsyncs/s
-------------------------------------
INSERT BUFFER AND ADAPTIVE HASH INDEX
-------------------------------------
Ibuf: size 1, free list len 0, seg size 2,
0 inserts, 0 merged recs, 0 merges
Hash table size 553253, node heap has 0 buffer(s)
0.00 hash searches/s, 0.00 non-hash searches/s
---
LOG
---
Log sequence number 44736
Log flushed up to   44736
Last checkpoint at  44736
0 pending log writes, 0 pending chkp writes
10 log i/o's done, 0.00 log i/o's/second
----------------------
BUFFER POOL AND MEMORY
----------------------
Total memory allocated 136937472; in additional pool allocated 0
Dictionary memory allocated 20888
Buffer pool size   8192
Free buffers       8177
Database pages     15
Modified db pages  0
Pending reads 0
Pending writes: LRU 0, flush list 0, single page 0
Pages read 16, created 0, written 1
0.00 reads/s, 0.00 creates/s, 0.00 writes/s
No buffer pool page gets since the last printout
LRU len: 15, unzip_LRU len: 0
I/O sum[0]:cur[0], unzip sum[0]:cur[0]
--------------
ROW OPERATIONS
--------------
0 queries inside InnoDB, 0 queries in queue
1 read views open inside InnoDB
Main thread id 2960240640, state: waiting for server activity
Number of rows inserted 0, updated 0, deleted 0, read 0
0.00 inserts/s, 0.00 updates/s, 0.00 deletes/s, 0.00 reads/s
----------------------------
END OF INNODB MONITOR OUTPUT
============================

1 row in set (0.00 sec)

mysql>

mysql> SHOW VARIABLES LIKE 'log_error';🆑
+---------------+-----------------------+
| Variable_name | Value                 |
+---------------+-----------------------+
| log_error     | /mysql.err            |
+---------------+-----------------------+
1 row in set (0.01 sec)

mysql>

mysql> SHOW VARIABLES LIKE 'socket';
+---------------+---------------------------------------+
| Variable_name | Value                                 |
+---------------+---------------------------------------+
| socket        | /opt/local/var/run/mysql5/mysqld.sock |
+---------------+---------------------------------------+
1 row in set (0.00 sec)

mysql>

server$ /usr/local/mysql/bin/mysqlcheck -u root -p --auto-repair --all-databases --socket=/opt/local/var/run/mysql5/mysqld.sock🆑
Enter password:🔑
db.db__altsys_language_constants           OK
db.db__avatar                              OK
db.db__avatar_user_link                    OK
db.DB__banner
warning  : 3 clients are using or haven't closed the table properly
db.db__banner                              OK
db.db__bannerclient                        OK

ー略ー

mysql.columns_priv
error    : Table upgrade required. Please do "REPAIR TABLE `columns_priv`" or dump/reload to fix it!
mysql.db
error    : Table upgrade required. Please do "REPAIR TABLE `db`" or dump/reload to fix it!
mysql.func
error    : Table upgrade required. Please do "REPAIR TABLE `func`" or dump/reload to fix it!
mysql.help_category

server$ /usr/local/mysql/bin/mysqlcheck -u root -p --auto-repair --all-databases --socket=/opt/local/var/run/mysql5/mysqld.sock🆑
Enter password:🔑
db.db__altsys_language_constants           OK
db.db__avatar                              OK
db.db__avatar_user_link                    OK

ー略ー

mysql.time_zone                                    OK
mysql.time_zone_leap_second                        OK
mysql.time_zone_name                               OK
mysql.time_zone_transition                         OK
mysql.time_zone_transition_type                    OK
mysql.user                                         OK
mysql.user_info                                    OK
server$